WO1989003954A3 - A seal - Google Patents

A seal Download PDF

Info

Publication number
WO1989003954A3
WO1989003954A3 PCT/GB1988/000926 GB8800926W WO8903954A3 WO 1989003954 A3 WO1989003954 A3 WO 1989003954A3 GB 8800926 W GB8800926 W GB 8800926W WO 8903954 A3 WO8903954 A3 WO 8903954A3
Authority
WO
WIPO (PCT)
Prior art keywords
seals
seal
sealing
piston
arcuate heel
Prior art date
Application number
PCT/GB1988/000926
Other languages
French (fr)
Other versions
WO1989003954A2 (en
Inventor
Keith Vernon Leigh-Monstevens
Leslie Paul Branum
David Lee Wrobleski
Original Assignee
Automotive Products Plc
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 Automotive Products Plc filed Critical Automotive Products Plc
Publication of WO1989003954A2 publication Critical patent/WO1989003954A2/en
Publication of WO1989003954A3 publication Critical patent/WO1989003954A3/en
Priority to GB9003287A priority Critical patent/GB2229790B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/236—Piston sealing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings

Abstract

The seal (50) includes an axially forward portion (50a) defining radially inner and radially outer deflectable lip seals (50c, 50d) and an axially rearward portion (50b) defining radially outer and inner arcuate heel seals (50e, 50f). When positioned in an annular groove (43) in a piston (30) and with the piston slidably received in the bore (27) of a cylinder (28), the annular seal (50) provides fluid pressure sealing at the deflectable lip seals, provides secondary fluid pressure sealing at the arcuate heel seals, provides air sealing at the arcuate heel seals, and functions at the arcuate heel seals to preclude the entry of contaminants into the sealing interfaces. The seal is especially effective when employed in a hydraulic pressure cylinder of the centre feed type since it allows the usage of a single annular seal positioned in a singular annular groove in the piston.
PCT/GB1988/000926 1987-10-29 1988-10-21 A seal WO1989003954A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9003287A GB2229790B (en) 1987-10-29 1990-02-14 A seal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11402987A 1987-10-29 1987-10-29
US114,029 1987-10-29

Publications (2)

Publication Number Publication Date
WO1989003954A2 WO1989003954A2 (en) 1989-05-05
WO1989003954A3 true WO1989003954A3 (en) 1989-06-01

Family

ID=22352971

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1988/000926 WO1989003954A2 (en) 1987-10-29 1988-10-21 A seal

Country Status (2)

Country Link
GB (2) GB8813677D0 (en)
WO (1) WO1989003954A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745617B1 (en) * 1996-02-29 1999-01-08 Valeo ADVANCED HYDRAULIC CONTROLLED CLUTCH DEVICE ESPECIALLY FOR MOTOR VEHICLES
DE19714844A1 (en) * 1997-04-10 1998-10-15 Mannesmann Sachs Ag Groove ring for sealing cylinder surfaces
GB0301511D0 (en) * 2003-01-23 2003-02-19 Automotive Prod France Seals

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700561A (en) * 1949-01-07 1955-01-25 Ernest J Svenson Sealing means
GB810625A (en) * 1955-10-04 1959-03-18 Parker Hannifin Corp Sealing or packing ring and joint including such ring
GB860090A (en) * 1956-05-07 1961-02-01 Renault Improvements in and relating to sealing means
GB1142265A (en) * 1967-02-14 1969-02-05 Trist Mouldings & Seals Ltd Improvements relating to sealing rings
GB2012392A (en) * 1978-01-13 1979-07-25 Dba Sa Piston Rings; Lip Type Seals
GB2102898A (en) * 1981-07-29 1983-02-09 Ludowici J C & Son Ltd Lipped seals

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700561A (en) * 1949-01-07 1955-01-25 Ernest J Svenson Sealing means
GB810625A (en) * 1955-10-04 1959-03-18 Parker Hannifin Corp Sealing or packing ring and joint including such ring
GB860090A (en) * 1956-05-07 1961-02-01 Renault Improvements in and relating to sealing means
GB1142265A (en) * 1967-02-14 1969-02-05 Trist Mouldings & Seals Ltd Improvements relating to sealing rings
GB2012392A (en) * 1978-01-13 1979-07-25 Dba Sa Piston Rings; Lip Type Seals
GB2102898A (en) * 1981-07-29 1983-02-09 Ludowici J C & Son Ltd Lipped seals

Also Published As

Publication number Publication date
GB2229790B (en) 1991-03-13
GB8813677D0 (en) 1988-07-13
GB2229790A (en) 1990-10-03
GB9003287D0 (en) 1990-06-20
WO1989003954A2 (en) 1989-05-05

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