1995-03-03
1996-12-10
Dino, Suzanne L.
Locks
Portable
70 19, 70 57, 70DIG63, E05B 7300
Patent
active
055820425
ABSTRACT:
A double lock apparatus (10) includes interconnected locking members (12) connected by a retainer pin (14). The members include arcing slots (22) and a pair of orifices (24) and (26). Each of the locking members includes an arcing slot arcing in an opposite direction and centered on the opposite of the orifices (24) and (26). The external lock members (42) and (44) insert through the orifices (24) and (26) to prevent pivoting. Removal of one of the external lock members (42) or (44) allows pivoting about the other lock member with the retainer pin sliding along one of the arcing slots (22). The pivoting motion separates retainer finger portions (20) to allow unlatching. The devices (10) may be connected in a series for providing unlocking by removal of one of a number of external locks.
REFERENCES:
patent: 2560624 (1951-07-01), Bartlett
patent: 2963895 (1960-12-01), Thomas
patent: 3677259 (1972-06-01), Reque et al.
patent: 3889497 (1975-06-01), Tuttle
patent: 4085599 (1978-04-01), Fischer et al.
patent: 4409804 (1983-10-01), Sork
patent: 4864834 (1989-09-01), Waite
patent: 5020342 (1991-06-01), Doan et al.
patent: 5167135 (1992-12-01), Gobeski
patent: 5365757 (1994-11-01), Primeau
"Safety Lockouts," Hoffman Engineering Company advertising brochure, p. 507, 1995.
Sketch of lock holder dated May 27, 1993.
Dino Suzanne L.
Federal-Hoffman Inc.
LandOfFree
Safety double lock does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Safety double lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety double lock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-417598