Locks – Operating mechanism – Key
Patent
1990-03-08
1991-06-18
Gall, Lloyd A.
Locks
Operating mechanism
Key
49141, 49503, 70 92, 70451, 292 21, 292DIG53, E05B 908
Patent
active
050240706
ABSTRACT:
A mounting pad for a lock cylinder provides a plurality of bosses which protrude interior of a door stile, the bosses having inclined threaded bores which hold set screws, the set screws are accessed laterally through an access opening on the side wall of the stile, the set screws are progressed outwardly of the bosses to press against an inside wall of the stile, thus clamping the mounting pad to the door stile. The mounting pad holds a lock cylinder inside an annular lock collar by use of a lock ring. The lock cylinder communicates to mechanical means residing interior of the door stile to effectuate latching of the door with a key. The access opening for insertion of a tool such as an Allan wrench to progress the set screws is located on an interior side wall of the door stile such that when the door is completely assembled, the access opening is covered either by an interior door panel, or other door structures such as a panic exit device or panic bar. The invention provides an attachment for a lock cylinder which makes the fasteners non-visible and inaccessible to tampering.
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Gall Lloyd A.
Thomas Industries Inc.
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