Rotary plug cylinder lock construction

Details Rotary plug cylinder lock construction Rotary plug cylinder lock construction

E - Fixed Constructions

05

B

70/54

E05B 29/04 (2006.01) E05B 21/06 (2006.01) E05B 15/16 (2006.01)

Patent

CA 1057525

ABSTRACT OF THE DISCLOSURE A key operated rotary plug cylinder lock having rotary disc tumblers with a concentric cylindrical boss on one face of each disc tumbler projecting axially into internesting relation into a complemental cylindrical well or recess in the confronting face of the next adjacent disc tumbler. A lock-out pin mechanism to lock the plug against rotation when excessive rearward stress is exerted thereon, and a frangible lost motion coupling between the tumblers and the shell portion of the plug breakable upon excess torquing forces are also provided.

274435

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