US2772411A - Boom angle indicator for cranes - Google Patents

Boom angle indicator for cranes Download PDF

Info

Publication number
US2772411A
US2772411A US464233A US46423354A US2772411A US 2772411 A US2772411 A US 2772411A US 464233 A US464233 A US 464233A US 46423354 A US46423354 A US 46423354A US 2772411 A US2772411 A US 2772411A
Authority
US
United States
Prior art keywords
boom
housing
cranes
switch
pendulum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US464233A
Inventor
Carl M Cooper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FISHFADER S
S FISHFADER
Original Assignee
FISHFADER S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FISHFADER S filed Critical FISHFADER S
Priority to US464233A priority Critical patent/US2772411A/en
Application granted granted Critical
Publication of US2772411A publication Critical patent/US2772411A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/02—Details
    • G01C9/06—Electric or photoelectric indication or reading means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/46—Position indicators for suspended loads or for crane elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • B66C23/905—Devices for indicating or limiting lifting moment electrical
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S37/00—Excavating
    • Y10S37/906—Visual aids and indicators for excavating tool

Definitions

  • This invention relates to a device whereby the angle or position of the boom of a crane will be indicated to the operator of the crane, this indicator being within the cab so that the operator will at all times be apprised of the exact position of the crane boom.
  • An object of my invention is to provide a boom position indicator for cranes in which the pendulum on the boom actuates a potentiometer, the potentiometer being wired to an ammeter or voltmeter situated in the cab of the crane.
  • Another object of my invention is to provide a novel boom indicator for cranes, in which the ammeter or voltmeter is also connected to a mercury switch which indicates the tilt or angle of the cab to serve as a warning if the cab or crane is tilting to a dangerous degree, due to an excessive load on the boom.
  • Another object of my invention is to provide a novel boom angle indicator of the character stated, in which the pendulum is mounted within a housing and is damped in a suitable liquid to prevent excessive oscillation of the pendulum.
  • Figure 1 is a side elevation of a crane with my boom indicating mechanism mounted thereon.
  • Figure 2 is a wiring diagram of my boom indicator.
  • Figure 3 is a side elevation of the boom angle indicator.
  • Figure 4 is a front elevation of the same with the cover plate removed.
  • Figure 5 is a sectional view taken on line 5-5 of Figure 4.
  • the numeral 1 indicates the cab of a crane and 2 the boom of that crane.
  • a boom type crane particularly those of the portable types
  • a visual means is provided Within the cab 1 of the crane so that the operator can observe a finger or needle of an instrument, this needle indicating in degrees the angle of the boom.
  • the C-clamp 5 attaches to a suitable member of the boom 2.
  • a horizontal shaft 6 is journaled in the housing 3 and projects into the tube 7, projecting from the rear of the housing 3.
  • a resistance or potentiometer 3 is mounted Within the tube 7 and a finger 9 on the shaft 6 moves over the potentiometer as the shaft 6 is rotated.
  • a pendulum 1G is suspended from the shaft 6 and is positioned within the housing 3. It will be evident that as the boom 2 moves upwardly 2,772,411 Patented Nov.
  • the pendulum 10 will move within the housing 3, thus rotating the shaft 6 and thereby moving the contact finger 9 over the potentiometer 8.
  • the movement of the pendulum 10 is clamped by the liquid 11 which partly fills the housing 3.
  • the housing 3 and the pendulum 10 therein can be so positioned on the arm 2 that the finger 9 will be at the zero position of the potentiometer 8 when the boom 2 is in its extreme raised position.
  • the finger 9 will move over the potentiometer 8, thus varying the resistance in the electrical circuit, to be further described, and actuating a voltmeter or ammeter, the needle of which moves over a chart calibrated in degrees.
  • the voltmeter 12 is mounted in the cab 1 of the crane and is so positioned that the operator can easily see the dial 13 which is calibrated in degrees, as previously stated.
  • the finger 14 of the voltmeter moves over the dial 13, as will be evident, depending upon the position of the finger 9 on the potentiometer 8.
  • a source of power preferably a battery 15, supplies power to the leads 16 and 17 extending therefrom.
  • a switch. 18 may be included in the circuit, if desired.
  • the lead 16 extends to one end of the potentiometer 3 and the lead 17 extends to the other end of that potentiometer.
  • a push button switch 19 has contacts 20 and 21 and the contact 20 is connected by lead 22 to the shaft 6, or to the finger 9 which sweeps the potentiometer 8.
  • the contact 21 is connected by lead 23 to a rheostat 24. This rheostat is the usual adjusting rheostat of a voltmeter whereby the hand 14 can be adjusted to a zero position.
  • a second set of contacts 25-26 of the switch 19 are connected as follows: The contact 25 is connected to the lead 17. Similarly, the contact 26 is connected to the lead 23, as shown.
  • the switch 19 engages the contacts 20-21, and in this position the potentiometer 3 through the position of the finger 9 thereof will actuate the voltmeter 12, causing the hand 14- thereof to move to a position corresponding to the position of the finger 9, but since the dial 13 is calibrated in degrees the operator will be able to read the angle of the boom 2 in degrees and determine if that angle i safe or unsafe.
  • the switch 19 engages the contacts 25-26, current flows to the rheostat 24 for the purpose of adjusting the hand 14 of the voltmeter in the usual manner.
  • a mercury switch 27 includes several contacts 28, 29 and 30. The drop of mercury in the switch will move to engage these contacts as the switch is tilted.
  • the switch 27 is mounted either upon or adjacent to the voltmeter 12 and thus as the cab 1 might tilt the switch 27 would be actuated to give a warning.
  • the contact 28 of the switch 27 is connected to the lead 16 by the wire 33.
  • a buzzer 32, or other audible Warning, is connected by lead 33 to the contact 29; the other side of the buzzer being connected by lead 34 to the main line 17.
  • a warning light 35 may also be included in the circuit and this light is connected by lead 36 to the lead 31 and the contact 39, and by the lead 37 to one end of the potentiometer d or to the lead 17, which in this instance is the same thing.
  • the pendulum 10 In operation as the boom 2 raises and lowers on its pivot the pendulum 10 will swing in the housing 3, thus moving the finger 9 over the potentiometer 8.
  • the voltage supplicd to the voltmeter 12 is thus varied, causing the hand 14' of the voltmeter to move over the dial 13, indicating in degrees the position of the boom 2.
  • Any excessive tilting of the cam 1 of the crane causes the mercury switch 27 to engage contacts 29 or 30, thus actuating the buzzer 32 or the light 35.
  • the pendulum 10 is prevented from violently swinging back and forth within the housing 3 by the liquid (such as oil) within the housing and in which the pendulum moves.
  • a boom angle indicator for cranes comprising a housing, attaching means on the housing to secure said housing to the boom, a pendulum pivotally mounted in the housing, a variable resistance, means operable by the pendulum to vary the resistance, a galvanometer, and electrical leads extending from said resistance to the galvanometer, said galvanometer being calibrated in degrees, a tilt switch mounted adjacent the galvanometer, a warning means, and electrical leads extending from the tilt switch to the warning means.
  • a boom angle indicator for cranes comprising a housing, attaching means on the housing to secure said housing to the boom, a shaft extending into the housing, a pendulum mounted on the shaft and positioned within the housing, a variable resistance mounted on the housing, said shaft extending to the variable resistance, a finger on the shaft adapted to sweep over the variable resistance, a galvanometer, and electrical leads extending from said resistance to the galvanometer, said galvanometer being calibrated in degrees, a tilt switch mounted adjacent the galvanometer to indicate excessive tilting of said galvanometer, a warning means, and electrical leads extending from the tilt switch to the warning means.
  • a boom angle indicator for cranes comprising a housing, attaching means on the housing to secure said housing to the boom, a shaft extending into the housing, a pendulum mounted on the shaft and positioned within the housing, a damping liquid in the housing in which the pendulum is immersed, a variable resistance mounted on the housing, said shaft extending to the variable re sistance, a finger on the shaft adapted to sweep over the variable resistance, a vgalvanorneter, and electrical leads extending from said resistance to the galvanometer, said galvanometer being calibrated in degrees, a tilt switch mounted adjacent the galvanometer to indicate excessive tilting of said galvanometer, a warning means, and electrical leads extending from the tilt switch to the warning means.

Description

Nov. 27, 1956 c. M. COOPER 2,772,411
' BOOM ANGLE INDICATOR FOR CRANES Filed Oct. 25, 1954 fl/a m. 6/14 M 600/ 4 08 United States Patent ice BOOM ANGLE INDICATOR FOR CRANES Carl M. Cooper, Compton, Calif., assignor of forty percent to S. Fishfader, Los Angeles, Calif.
Application October 25, 1954, Serial No. 464,233
3 Claims. (Cl. 340-282) This invention relates to a device whereby the angle or position of the boom of a crane will be indicated to the operator of the crane, this indicator being within the cab so that the operator will at all times be apprised of the exact position of the crane boom.
An object of my invention is to provide a boom position indicator for cranes in which the pendulum on the boom actuates a potentiometer, the potentiometer being wired to an ammeter or voltmeter situated in the cab of the crane.
Another object of my invention is to provide a novel boom indicator for cranes, in which the ammeter or voltmeter is also connected to a mercury switch which indicates the tilt or angle of the cab to serve as a warning if the cab or crane is tilting to a dangerous degree, due to an excessive load on the boom.
Another object of my invention is to provide a novel boom angle indicator of the character stated, in which the pendulum is mounted within a housing and is damped in a suitable liquid to prevent excessive oscillation of the pendulum.
Other objects, advantages and features of invention may appear from the accompanying drawing, the subjoined detailed description and the appended claims.
In the drawing:
Figure 1 is a side elevation of a crane with my boom indicating mechanism mounted thereon.
Figure 2 is a wiring diagram of my boom indicator.
Figure 3 is a side elevation of the boom angle indicator.
Figure 4 is a front elevation of the same with the cover plate removed.
Figure 5 is a sectional view taken on line 5-5 of Figure 4.
Referring more particularly to the drawing, the numeral 1 indicates the cab of a crane and 2 the boom of that crane. In a boom type crane, particularly those of the portable types, it is possible to tip the crane over by attempting to lift too great a load, or if the boom is at an incorrect angle a lesser load on the boom will also tip the crane, and for these reasons it is desirable that the operator be apprised of the exact angle of the boom without having to observe the boom visually and estimate the angle and Whether that angle is safe. With my invention a visual means is provided Within the cab 1 of the crane so that the operator can observe a finger or needle of an instrument, this needle indicating in degrees the angle of the boom. A housing 3, preferably cylindrical in shape, is mounted on the boom 2 by means of an arm 4 which projects downwardly from the housing and is fixedly attached to a C-clamp 5. The C-clamp 5 attaches to a suitable member of the boom 2. A horizontal shaft 6 is journaled in the housing 3 and projects into the tube 7, projecting from the rear of the housing 3. A resistance or potentiometer 3 is mounted Within the tube 7 and a finger 9 on the shaft 6 moves over the potentiometer as the shaft 6 is rotated. A pendulum 1G is suspended from the shaft 6 and is positioned within the housing 3. It will be evident that as the boom 2 moves upwardly 2,772,411 Patented Nov. 27, 1956 and downwardly in an are, that the pendulum 10 will move within the housing 3, thus rotating the shaft 6 and thereby moving the contact finger 9 over the potentiometer 8. The movement of the pendulum 10 is clamped by the liquid 11 which partly fills the housing 3. The housing 3 and the pendulum 10 therein, can be so positioned on the arm 2 that the finger 9 will be at the zero position of the potentiometer 8 when the boom 2 is in its extreme raised position. As the boom 2 is lowered, the finger 9 will move over the potentiometer 8, thus varying the resistance in the electrical circuit, to be further described, and actuating a voltmeter or ammeter, the needle of which moves over a chart calibrated in degrees. The voltmeter 12 is mounted in the cab 1 of the crane and is so positioned that the operator can easily see the dial 13 which is calibrated in degrees, as previously stated. The finger 14 of the voltmeter moves over the dial 13, as will be evident, depending upon the position of the finger 9 on the potentiometer 8.
The wiring diagram is as follows: A source of power, preferably a battery 15, supplies power to the leads 16 and 17 extending therefrom. A switch. 18 may be included in the circuit, if desired. The lead 16 extends to one end of the potentiometer 3 and the lead 17 extends to the other end of that potentiometer. A push button switch 19 has contacts 20 and 21 and the contact 20 is connected by lead 22 to the shaft 6, or to the finger 9 which sweeps the potentiometer 8. The contact 21 is connected by lead 23 to a rheostat 24. This rheostat is the usual adjusting rheostat of a voltmeter whereby the hand 14 can be adjusted to a zero position. A second set of contacts 25-26 of the switch 19 are connected as follows: The contact 25 is connected to the lead 17. Similarly, the contact 26 is connected to the lead 23, as shown. Thus in one position the switch 19 engages the contacts 20-21, and in this position the potentiometer 3 through the position of the finger 9 thereof will actuate the voltmeter 12, causing the hand 14- thereof to move to a position corresponding to the position of the finger 9, but since the dial 13 is calibrated in degrees the operator will be able to read the angle of the boom 2 in degrees and determine if that angle i safe or unsafe. When the switch 19 engages the contacts 25-26, current flows to the rheostat 24 for the purpose of adjusting the hand 14 of the voltmeter in the usual manner. A mercury switch 27 includes several contacts 28, 29 and 30. The drop of mercury in the switch will move to engage these contacts as the switch is tilted. The switch 27 is mounted either upon or adjacent to the voltmeter 12 and thus as the cab 1 might tilt the switch 27 would be actuated to give a warning. The contact 28 of the switch 27 is connected to the lead 16 by the wire 33. A buzzer 32, or other audible Warning, is connected by lead 33 to the contact 29; the other side of the buzzer being connected by lead 34 to the main line 17. A warning light 35 may also be included in the circuit and this light is connected by lead 36 to the lead 31 and the contact 39, and by the lead 37 to one end of the potentiometer d or to the lead 17, which in this instance is the same thing.
In operation as the boom 2 raises and lowers on its pivot the pendulum 10 will swing in the housing 3, thus moving the finger 9 over the potentiometer 8. The voltage supplicd to the voltmeter 12 is thus varied, causing the hand 14' of the voltmeter to move over the dial 13, indicating in degrees the position of the boom 2. Any excessive tilting of the cam 1 of the crane causes the mercury switch 27 to engage contacts 29 or 30, thus actuating the buzzer 32 or the light 35. The pendulum 10 is prevented from violently swinging back and forth within the housing 3 by the liquid (such as oil) within the housing and in which the pendulum moves.
Having described my invention, I claim:
1. A boom angle indicator for cranes comprising a housing, attaching means on the housing to secure said housing to the boom, a pendulum pivotally mounted in the housing, a variable resistance, means operable by the pendulum to vary the resistance, a galvanometer, and electrical leads extending from said resistance to the galvanometer, said galvanometer being calibrated in degrees, a tilt switch mounted adjacent the galvanometer, a warning means, and electrical leads extending from the tilt switch to the warning means.
,2. A boom angle indicator for cranes comprising a housing, attaching means on the housing to secure said housing to the boom, a shaft extending into the housing, a pendulum mounted on the shaft and positioned within the housing, a variable resistance mounted on the housing, said shaft extending to the variable resistance, a finger on the shaft adapted to sweep over the variable resistance, a galvanometer, and electrical leads extending from said resistance to the galvanometer, said galvanometer being calibrated in degrees, a tilt switch mounted adjacent the galvanometer to indicate excessive tilting of said galvanometer, a warning means, and electrical leads extending from the tilt switch to the warning means.
3. A boom angle indicator for cranes comprising a housing, attaching means on the housing to secure said housing to the boom, a shaft extending into the housing, a pendulum mounted on the shaft and positioned within the housing, a damping liquid in the housing in which the pendulum is immersed, a variable resistance mounted on the housing, said shaft extending to the variable re sistance, a finger on the shaft adapted to sweep over the variable resistance, a vgalvanorneter, and electrical leads extending from said resistance to the galvanometer, said galvanometer being calibrated in degrees, a tilt switch mounted adjacent the galvanometer to indicate excessive tilting of said galvanometer, a warning means, and electrical leads extending from the tilt switch to the warning means.
References Cited in the file of this patent UNITED, STATES PATENTS 561,431 Pfatischer June 2, 1896 2,330,060 Kuehni Sept. 21, 1943 2,346,066 Conrad Apr. 4, 1944 2,418,576 Conrad Apr. 8, 1947 2,448,597 Jolley et a1 Sept. 7, 1948 2,474,610 Wunsch June 28, 1949
US464233A 1954-10-25 1954-10-25 Boom angle indicator for cranes Expired - Lifetime US2772411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US464233A US2772411A (en) 1954-10-25 1954-10-25 Boom angle indicator for cranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US464233A US2772411A (en) 1954-10-25 1954-10-25 Boom angle indicator for cranes

Publications (1)

Publication Number Publication Date
US2772411A true US2772411A (en) 1956-11-27

Family

ID=23843074

Family Applications (1)

Application Number Title Priority Date Filing Date
US464233A Expired - Lifetime US2772411A (en) 1954-10-25 1954-10-25 Boom angle indicator for cranes

Country Status (1)

Country Link
US (1) US2772411A (en)

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039087A (en) * 1958-08-26 1962-06-12 American Radiator & Standard Earth moving depth indicator
US3139988A (en) * 1962-07-24 1964-07-07 Thew Shovel Co Indicator for cranes and the like
US3228019A (en) * 1963-09-30 1966-01-04 Mark Visceglia Inc Adjustable boom angle warning device
US3233349A (en) * 1963-12-27 1966-02-08 Wayland D Keith Depth indicating and depth controlling device for earth moving machines
US3365076A (en) * 1966-10-13 1968-01-23 Clyde Iron Works Inc Device for stabilizing the hook swing of a crane boom
US3448522A (en) * 1966-03-24 1969-06-10 Plasser Bahnbaumasch Franz Apparatus for indicating a superelevation of a track
US3505514A (en) * 1967-11-13 1970-04-07 Eaton Yale & Towne Load warning device
US3526295A (en) * 1967-12-01 1970-09-01 L Entreprise Generale D Instal Stabilizer for elevatable working station
US3835679A (en) * 1971-10-20 1974-09-17 Kromer T Kg Time control safety lock for a safe or the like with indicating means outside the safe for indicating the time control of the lock
US3848750A (en) * 1973-02-09 1974-11-19 D Hoge Crane tip alarm
JPS49137258U (en) * 1973-03-28 1974-11-26
US3860088A (en) * 1974-02-14 1975-01-14 Gen Cable Corp Aerial lift platform leveling apparatus and system
US3865265A (en) * 1973-08-20 1975-02-11 Brudi Equipment Lift truck safety accessory
US3961685A (en) * 1974-12-23 1976-06-08 Morita Pump Kabushiki Kaisha Ladder working limit based ladder stopping device for aerial ladder truck
US3966017A (en) * 1975-02-12 1976-06-29 Morita Pump Kabushiki Kaisha Working range indicating device for aerial ladder truck
US4016535A (en) * 1975-12-15 1977-04-05 Sheller-Globe Corporation Tilt alarm for tractor vehicle or the like
US4022284A (en) * 1975-03-17 1977-05-10 Dresser Industries, Inc. Automatic alignment system for earth boring rig
US4037742A (en) * 1974-10-08 1977-07-26 Hiab-Foco Aktiebolag Programme controlled hydraulic loading crane
US4044610A (en) * 1975-03-12 1977-08-30 Akermans Verkstad Ab Excavators
US4067446A (en) * 1976-02-24 1978-01-10 Ray Louis F Cable stay crane
US4112355A (en) * 1976-10-22 1978-09-05 Lockheed Corporation Quality and fit measuring apparatus for fasteners and their holes
US4286386A (en) * 1977-09-06 1981-09-01 Long Irvin E Electro-mechanical displacement measuring device
US4356638A (en) * 1980-10-22 1982-11-02 Leveling Devices, Inc. Lift truck digital inclinometer
US4476567A (en) * 1981-12-11 1984-10-09 The Boeing Company Electronic protractor
US4480757A (en) * 1982-01-28 1984-11-06 Amca International Corporation Collapsible frame support for pivotal boom on a portable crane
US4497181A (en) * 1983-06-13 1985-02-05 Vilter Manufacturing Corporation Means to measure, indicate and regulate thickness of ice layer in refrigeration system
US4551982A (en) * 1983-06-13 1985-11-12 Vilter Manufacturing Corporation Ice-thickness sensing device in refrigeration system
US4553632A (en) * 1984-04-06 1985-11-19 Griffiths Edward E Auto-leveled crane boom man baskets
US4586150A (en) * 1983-09-14 1986-04-29 Richman Brothers Company Electronic measuring device
US4658508A (en) * 1986-01-30 1987-04-21 Cardel, Inc. Electronic level measuring systems for truck trailers
US4743893A (en) * 1986-06-04 1988-05-10 Anthony Gentile Equi crane anti-tipping device
US4858331A (en) * 1986-09-11 1989-08-22 Schenck-Auto-Service-Gerate Gmbh Method and apparatus for measurement of caster, king-pin-inclination, and camber on motor vehicles
US5136784A (en) * 1990-12-07 1992-08-11 Marantz Jacob J Vehicle electronic level measuring and display device
US5270686A (en) * 1992-05-21 1993-12-14 Raul Martinez Pizza delivery container with tilt alarm
US5669696A (en) * 1994-06-21 1997-09-23 Micro Craft, Inc. Underhood lamp assembly with gravity-actuated switch
US5722759A (en) * 1996-04-22 1998-03-03 Micro Craft, Inc. Lamp assembly with inverted pivot member
US20070261504A1 (en) * 2006-05-11 2007-11-15 Munlandy Murelitharan Opto-mechanical tilt and inertial force sensor
US20140017051A1 (en) * 2012-07-13 2014-01-16 Konecranes Plc Cask transport assembly
US20150353329A1 (en) * 2013-01-10 2015-12-10 Handing Lin Detection, monitoring device of the hook angle and its crane
US9786397B2 (en) 2012-07-13 2017-10-10 Konecranes Global Corporation Cask transport assembly
US9856118B1 (en) * 2016-08-27 2018-01-02 Handing Lin Lifting hook assembly establishing lifting hook posture detection carrier, and crane

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US561431A (en) * 1896-06-02 Telltale for steering-gear of ships
US2330060A (en) * 1941-10-28 1943-09-21 Gen Electric Safe load indicator for crane hoists
US2346066A (en) * 1942-10-12 1944-04-04 Joshua C Conrad Overload and radius indicator for cranes
US2418576A (en) * 1944-06-24 1947-04-08 Myrtle L Conrad Signal system for cranes
US2448597A (en) * 1947-01-13 1948-09-07 Leland D Jolley Auto prowler alarm
US2474610A (en) * 1945-05-29 1949-06-28 Elton P Wunsch Quantitative deceleration indicator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US561431A (en) * 1896-06-02 Telltale for steering-gear of ships
US2330060A (en) * 1941-10-28 1943-09-21 Gen Electric Safe load indicator for crane hoists
US2346066A (en) * 1942-10-12 1944-04-04 Joshua C Conrad Overload and radius indicator for cranes
US2418576A (en) * 1944-06-24 1947-04-08 Myrtle L Conrad Signal system for cranes
US2474610A (en) * 1945-05-29 1949-06-28 Elton P Wunsch Quantitative deceleration indicator
US2448597A (en) * 1947-01-13 1948-09-07 Leland D Jolley Auto prowler alarm

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039087A (en) * 1958-08-26 1962-06-12 American Radiator & Standard Earth moving depth indicator
US3139988A (en) * 1962-07-24 1964-07-07 Thew Shovel Co Indicator for cranes and the like
US3228019A (en) * 1963-09-30 1966-01-04 Mark Visceglia Inc Adjustable boom angle warning device
US3233349A (en) * 1963-12-27 1966-02-08 Wayland D Keith Depth indicating and depth controlling device for earth moving machines
US3448522A (en) * 1966-03-24 1969-06-10 Plasser Bahnbaumasch Franz Apparatus for indicating a superelevation of a track
US3365076A (en) * 1966-10-13 1968-01-23 Clyde Iron Works Inc Device for stabilizing the hook swing of a crane boom
US3505514A (en) * 1967-11-13 1970-04-07 Eaton Yale & Towne Load warning device
US3526295A (en) * 1967-12-01 1970-09-01 L Entreprise Generale D Instal Stabilizer for elevatable working station
US3835679A (en) * 1971-10-20 1974-09-17 Kromer T Kg Time control safety lock for a safe or the like with indicating means outside the safe for indicating the time control of the lock
US3848750A (en) * 1973-02-09 1974-11-19 D Hoge Crane tip alarm
JPS49137258U (en) * 1973-03-28 1974-11-26
JPS5331565Y2 (en) * 1973-03-28 1978-08-05
US3865265A (en) * 1973-08-20 1975-02-11 Brudi Equipment Lift truck safety accessory
US3860088A (en) * 1974-02-14 1975-01-14 Gen Cable Corp Aerial lift platform leveling apparatus and system
US4037742A (en) * 1974-10-08 1977-07-26 Hiab-Foco Aktiebolag Programme controlled hydraulic loading crane
US3961685A (en) * 1974-12-23 1976-06-08 Morita Pump Kabushiki Kaisha Ladder working limit based ladder stopping device for aerial ladder truck
US3966017A (en) * 1975-02-12 1976-06-29 Morita Pump Kabushiki Kaisha Working range indicating device for aerial ladder truck
US4044610A (en) * 1975-03-12 1977-08-30 Akermans Verkstad Ab Excavators
US4022284A (en) * 1975-03-17 1977-05-10 Dresser Industries, Inc. Automatic alignment system for earth boring rig
US4016535A (en) * 1975-12-15 1977-04-05 Sheller-Globe Corporation Tilt alarm for tractor vehicle or the like
US4067446A (en) * 1976-02-24 1978-01-10 Ray Louis F Cable stay crane
US4112355A (en) * 1976-10-22 1978-09-05 Lockheed Corporation Quality and fit measuring apparatus for fasteners and their holes
US4286386A (en) * 1977-09-06 1981-09-01 Long Irvin E Electro-mechanical displacement measuring device
US4356638A (en) * 1980-10-22 1982-11-02 Leveling Devices, Inc. Lift truck digital inclinometer
US4476567A (en) * 1981-12-11 1984-10-09 The Boeing Company Electronic protractor
US4480757A (en) * 1982-01-28 1984-11-06 Amca International Corporation Collapsible frame support for pivotal boom on a portable crane
US4497181A (en) * 1983-06-13 1985-02-05 Vilter Manufacturing Corporation Means to measure, indicate and regulate thickness of ice layer in refrigeration system
US4551982A (en) * 1983-06-13 1985-11-12 Vilter Manufacturing Corporation Ice-thickness sensing device in refrigeration system
US4586150A (en) * 1983-09-14 1986-04-29 Richman Brothers Company Electronic measuring device
US4553632A (en) * 1984-04-06 1985-11-19 Griffiths Edward E Auto-leveled crane boom man baskets
US4658508A (en) * 1986-01-30 1987-04-21 Cardel, Inc. Electronic level measuring systems for truck trailers
EP0231123A2 (en) * 1986-01-30 1987-08-05 Cardel, Inc. Electronic level measuring system for a truck trailer
EP0231123A3 (en) * 1986-01-30 1988-03-16 Cardel, Inc. Electronic level masuring system for a truck trailer
US4743893A (en) * 1986-06-04 1988-05-10 Anthony Gentile Equi crane anti-tipping device
US4858331A (en) * 1986-09-11 1989-08-22 Schenck-Auto-Service-Gerate Gmbh Method and apparatus for measurement of caster, king-pin-inclination, and camber on motor vehicles
US5136784A (en) * 1990-12-07 1992-08-11 Marantz Jacob J Vehicle electronic level measuring and display device
US5270686A (en) * 1992-05-21 1993-12-14 Raul Martinez Pizza delivery container with tilt alarm
US5669696A (en) * 1994-06-21 1997-09-23 Micro Craft, Inc. Underhood lamp assembly with gravity-actuated switch
US5798912A (en) * 1994-06-21 1998-08-25 Micro Craft, Inc. Underhood lamp assembly with gravity-actuated switch
US5722759A (en) * 1996-04-22 1998-03-03 Micro Craft, Inc. Lamp assembly with inverted pivot member
US20070261504A1 (en) * 2006-05-11 2007-11-15 Munlandy Murelitharan Opto-mechanical tilt and inertial force sensor
US7726213B2 (en) * 2006-05-11 2010-06-01 Avago Technologies General Ip (Singapore) Pte. Ltd. Opto-mechanical tilt and inertial force sensor
US20140017051A1 (en) * 2012-07-13 2014-01-16 Konecranes Plc Cask transport assembly
US9343191B2 (en) * 2012-07-13 2016-05-17 Konecranes Global Corporation Cask transport assembly
US9786397B2 (en) 2012-07-13 2017-10-10 Konecranes Global Corporation Cask transport assembly
US10224123B2 (en) 2012-07-13 2019-03-05 Konecranes Global Corporation Cask transport assembly
US10600526B2 (en) 2012-07-13 2020-03-24 Konecranes Global Corporation Cask transport assembly
US20150353329A1 (en) * 2013-01-10 2015-12-10 Handing Lin Detection, monitoring device of the hook angle and its crane
US9446934B2 (en) * 2013-01-10 2016-09-20 Handing Lin Detecting, monitoring device of the hook angle and its crane
US9856118B1 (en) * 2016-08-27 2018-01-02 Handing Lin Lifting hook assembly establishing lifting hook posture detection carrier, and crane

Similar Documents

Publication Publication Date Title
US2772411A (en) Boom angle indicator for cranes
US2120771A (en) Electric level indicator
US2346066A (en) Overload and radius indicator for cranes
US2886299A (en) Bore mining apparatus having means to measure the angle between units thereof
US3710368A (en) Boom angle indication system
US3584387A (en) Slope indicating device
US2141236A (en) Bathroom scale
US2722056A (en) Tilt indicator
US3048927A (en) Height indicating apparatus
US1497178A (en) Electric level indicator for liquids
US2780686A (en) Indicating device
US1522355A (en) Electric gasoline gauge
US4121347A (en) Device for setting and retaining a fixed direction
US1058320A (en) Level.
US2575245A (en) Engineer's point finder
ES474744A1 (en) Boom length sensing and indicating system with self-synchronization
Simons An Improved Tangentimeter
US1432346A (en) Electrical indicator
CA1040285A (en) Crane boom angle indication and warning system
JPS62175623A (en) Liquid volume gauge apparatus for fuel tank
US1641491A (en) Rheostat for liquid-level indicators
GB1081715A (en) Adjustable boom angle warning device
US2027613A (en) Wind angle indicator
GB2195775A (en) Inclinometer
US751623A (en) Sounding apparatus