Key-in-knob cylinder replacement system

Details Key-in-knob cylinder replacement system Key-in-knob cylinder replacement system

1984-01-12

1987-06-16

Wolfe, Robert L.

Locks

Operating mechanism

Key

70380, 70448, 70451, E05B 904

Patent

active

046728287

ABSTRACT:
A key-in-knob type cylinder replacement system comprises a replacement cylinder having a generally cylindrical shell and a plug having a keyway and housing pin means to prevent the rotation of the plug. A false bible dimensioned to be generally commensurate in size and shape to the projecting pin housing of the cylinder to be replaced is mounted to the cylinder shell. An adaptor means for actuating the latch assembly in response to rotation of the replacement plug is secured to the replacement cylinder plug by means of a clip. A replacement kit provides a plurality of false bibles and adaptor means, each of which is adapted to be mounted to the plug of the plug-shell combination to form a replacement for a conventional key-in-knob cylinder.

REFERENCES:
patent: 1565558 (1925-12-01), Fremon
patent: 2877638 (1959-03-01), Muttart
patent: 3928991 (1975-12-01), Gaul et al.
patent: 4148201 (1979-04-01), Miyamae et al.
patent: 4193277 (1980-03-01), Lo
patent: 4369642 (1983-01-01), Grell
patent: 4470278 (1984-09-01), Hale et al.
patent: 4472953 (1984-09-01), Gater

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