Door locks

Details Door locks Door locks

E - Fixed Constructions

05

B

70/4

E05B 35/08 (2006.01) E05B 51/02 (2006.01)

Patent

CA 1112068

ABSTRACT A door lock, in particular a lock for hotel room doors. Actuation of the exterior door handle creates a supply of compressed air which is directed through a coding assembly to actuate a lock release member. The operation of the coding assembly is controlled by a pair of matching punched cards. One of the cards is normally positioned within the lock and the other card is retained by an authorised user for insertion into the lock to operate the coding assembly. Two separate coding assemblies are provided with an hotel door lock, one being for use by a guest and the other under the control of the hotel management.

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