Security door knob and escutcheon

Details Security door knob and escutcheon Security door knob and escutcheon

1985-12-04

1987-02-03

Smith, Gary L.

Locks

Parts, attachments, accessories and adjuncts

For key-operated mechanism

70370, 70451, 292357, A47B 3504, E05B 908, E05B 1502

Patent

active

046401121

ABSTRACT:
There is disclosed a secured door knob and escutcheon assembly, wherein the assembly is protected against tampering and unauthorized removal from either side of a door, when said door is in the closed position. The assembly includes a knob arrangement having mounting means which includes a bearing sleeve that is threadably engaged with a mounting plate affixed to the door. Rotation of said bearing sleeve is precluded by an apertured escutcheon plate through which said bearing sleeve is engaged. The bearing sleeve and escutcheon aperture have complementary flats or non-round surfaces such that when the escutcheon is in place rotation of the bearing sleeve is precluded. Further, the escutcheon plate is held in place by holding means that can only be released when the door is opened. In the disclosed embodiment the holding means is a key cylinder engaged through a second aperture in the escutcheon plate and fixed in place by a set screw mounted in the edge face of the door.

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