Locks – Operating mechanism – Key
Patent
1990-02-07
1991-06-04
Gall, Lloyd A.
Locks
Operating mechanism
Key
194212, 211 9, E05B 1100
Patent
active
050203479
ABSTRACT:
An apparatus for alternately retaining a selected one of a pair of keys and releasing the other one of the pair of keys is provided. The retained key cannot be released until the other key is again disposed in a retained position. The apparatus includes a base plate having a pair of key receptacles, a slider member slidably mounted on the base plate, a visitor key having a pinion gear and a home key. The slider member includes a pair of key retaining slots for respectively retaining each key and a rack for driving engagement by the visitor key pinion gear for effecting sliding movement of the slider member in response to rotation of the visitor key pinion gear. A conventional key can be secured to the home key to control use of the conventional key through the selected release and retention of the visitor key and the home key.
REFERENCES:
patent: 537311 (1895-04-01), Schade
patent: 2064474 (1936-12-01), Hopkins
patent: 2220786 (1940-11-01), Grainger
patent: 2336936 (1943-12-01), Johnson
patent: 2396759 (1946-03-01), Thieme
patent: 2568206 (1951-09-01), Seaman et al.
patent: 3154938 (1964-11-01), Cohen
patent: 4472952 (1984-09-01), Hollowell, Jr.
patent: 4641509 (1987-02-01), Batchelor et al.
patent: 4753092 (1988-06-01), Mercer
Gall Lloyd A.
One Way Out, Inc.
LandOfFree
Key safe apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Key safe apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Key safe apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1018590