Locks – Operating mechanism – Combination
Patent
1986-12-29
1989-05-23
Wolfe, Robert L.
Locks
Operating mechanism
Combination
70316, 70321, 70333R, 70277, E05B 3708
Patent
active
048318515
ABSTRACT:
A lock mechanism having a mechanical combination lock and an electronic lock, wherein the mechanical combination lock serves for effecting a fail safe entry in case of failure of the electronic lock. More specifically, the lock mechanism includes a mechanical combination lock having a bolt-retracting linkage which is tripped by inward movement of a dial into a first operative relationship with a driver on the drive spindle. An electronic latch prevents bolt retraction by this bolt-retracting linkage when in the first operative positive until the electronic latch has been operated. However, when the tumblers of the lock have been aligned and a gate bar enters the tumblers, the bolt-retraction linkage is caused to assume a second operative relationship with the driver so as to permit bolt retraction despite the latching effect of the electronic lock.
REFERENCES:
patent: 323918 (1885-08-01), Crockett et al.
patent: 430764 (1890-06-01), Beers et al.
patent: 504462 (1893-09-01), Tinkham
patent: 550655 (1895-12-01), Stone
patent: 655006 (1900-07-01), Pratt
patent: 767575 (1904-08-01), Jacobson et al.
patent: 2053901 (1936-09-01), Findlay
patent: 2079702 (1937-05-01), Diesel
patent: 3968667 (1976-07-01), Gartner et al.
patent: 3991596 (1976-11-01), Gartner
patent: 4257249 (1981-03-01), Johns-Hunt
patent: 4359883 (1982-11-01), Bechtiger et al.
patent: 4578967 (1986-04-01), Yu
patent: 4665727 (1987-05-01), Uyeda
patent: 4669394 (1987-06-01), Fogleman et al.
patent: 4671086 (1987-06-01), Fogleman et al.
patent: 4686912 (1987-08-01), Fogleman et al.
patent: 4745784 (1988-05-01), Gartner
Dino Suzanne L.
Supra Products, Inc.
Wolfe Robert L.
LandOfFree
Combination/electronic lock system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Combination/electronic lock system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combination/electronic lock system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1722064