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Publication numberUS3641841 A
Publication typeGrant
Publication date15 Feb 1972
Filing date13 Mar 1970
Priority date24 Mar 1969
Also published asDE2013409A1
Publication numberUS 3641841 A, US 3641841A, US-A-3641841, US3641841 A, US3641841A
InventorsKomori Masahiro
Original AssigneeKomori Masahiro
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Safety gate for press
US 3641841 A
Abstract
A safety gate held vertically in front of a press and a gate lift comprising a linkage system for moving the gate between a press exposing and a press blocking position. Spring means normally urge the lift into one of these positions, and a hydraulic motor or solenoid is connected to an initial link of the lift for normally urging the lift opposite thereto upon selective operation thereof.
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Description  (OCR text may contain errors)

O United States Patent 1151 3,641,84 1

Komori Feb. 15, 1972 54] SAFETY GATE FOR PRESS 2,171,523 9/1939 Frandsen ..74/615 2,240,915 5/1941 Searjeant ..74/615 [72] Inventor. Masahiro Komon, Tokyo, Japan 2,683,515 7/1954 Hem et alw [22] Filed: Mar. 13, 1970 2,724,287 11/1955 Knoth 3,186,256 6/1965 Reznick ..74/615 [21] Appl 19225 3,377,884 4/1968 Guy et al. ..74/615 [30] Foreign Application Priority Data Primary Examiner-William F. ODea Mar. 24, 1969 Japan ..44/21898 swam Shmmake' Sept. 10, 1969 Japan ..44/71268 521 U.S. c| ..74/615, 83/397, 100/53 [571 ABSTRACT [51] Int. Cl ..Fl6p 3/04 A safet y gate held vertlcally in front of a press and a gate lift [58] Field of Search ..74/6l5, 613, 612, 83/544, 397; comprising a linkage system for moving the gate between a 100/53 press exposing and a press blocking position. Spring means normally urge the lift into one of these positions, and a [56] References Cited hydraulic motor or solenoid is connected to an initial link of UNITED STATES PATENTS the lift for normally urging the lift opposite thereto upon selective o oration thereof. 1,259,554 3/l918 Pross ..74/6l3 p 1,536,762 5/1925 Broughton ..74/613 9 Claims, 23 Drawing Figures PATENTE0F615I972 3341 x341 SHEET 0 1 HF 20 1 N VEN TOR M-MR Moxwm MERIT;

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Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1259554 *18 Aug 191719 Mar 1918George F ProssGuard for machines.
US1536762 *18 Apr 19235 May 1925Joseph BroughtonGuard for machinery
US2171523 *24 Jun 19385 Sep 1939Frandsen Anton MSafety guard for power presses
US2240915 *16 Nov 19386 May 1941Taylor Shantz IncSafety guard
US2683515 *18 Feb 194913 Jul 1954Hoffman Engineering CorpAutomatic safety guard for power presses
US2724287 *8 Nov 195222 Nov 1955 knoth
US3186256 *22 Jul 19631 Jun 1965Louis ReznickSafety guards for brakes, punch presses and similar machines
US3377884 *18 Nov 196516 Apr 1968Wilmot Breeden LtdGuarding of machine tools
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3987881 *17 Apr 197526 Oct 1976Perkins & Mundt Inc.Safety guard
US4033250 *18 Jun 19755 Jul 1977The Babcock & Wilcox CompanyPneumatic buffering system
US5538490 *12 Dec 199523 Jul 1996Fujitsu LimitedSafety bar mechanism and sheet processing device having a safety bar mechanism
US6416451 *21 Dec 19989 Jul 2002Ranpak Corp.Output chute for cushioning conversion machine
US7127931 *23 Nov 200431 Oct 2006Honda Motor Co., Ltd.Tandem press shuttle area isolation gate system and method of use
US71862087 Jul 20046 Mar 2007Ranpak Corp.Cutterless dunnage converter and method
US740747131 Jan 20075 Aug 2008Ranpak Corp.Cutterless dunnage converter and method
Classifications
U.S. Classification74/615, 83/397
International ClassificationF16P3/00, F16P3/04
Cooperative ClassificationF16P3/04
European ClassificationF16P3/04