Locks – Operating mechanism – Key
Patent
1993-10-04
1994-10-18
Gall, Lloyd A.
Locks
Operating mechanism
Key
70397, 70398, 70401, 70411, 70456R, E05B 1918
Patent
active
053557026
ABSTRACT:
A security combination key is provided, which consists of a hollow housing having a removable cover plate. An elongated guide member having an open track therein and a ward groove on a side thereof, extends from one side of the hollow housing. A plurality of blades having serrations extend in parallel relationships from within the hollow housing into the track of the guide member with the serrations exposed in the track. An apparatus is for sliding the blades in the track of the guide member, to form various combinations with the serrations to match up with pin tumblers in specific locks. A device is for locking the blades in a stationary position in the track of the guide member. The guide member having the ward groove can be inserted into a keyway having a compatible set of ward ridges in a cylinder of the lock, allowing the serrations of the blades to properly position the pin tumblers to permit operation of the lock.
REFERENCES:
patent: 825063 (1906-07-01), Lawbaugh
patent: 939679 (1909-11-01), Freud
patent: 947132 (1910-02-01), Jenkins
patent: 1899739 (1933-02-01), Von Mehren
patent: 3486353 (1969-12-01), Pilvet
patent: 3672192 (1972-06-01), Dontas
patent: 3808853 (1974-05-01), Helenurm
patent: 3827151 (1974-08-01), Naill
patent: 3991596 (1976-11-01), Gartner
patent: 4545226 (1985-10-01), Urrestarazu-Borda
patent: 4662200 (1987-05-01), Borda
patent: 4747282 (1988-05-01), Nyun
Gall Lloyd A.
Miller Richard L.
LandOfFree
Security combination key does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Security combination key, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security combination key will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2364577