Locks – Systems – Operation and control
Patent
1979-08-06
1981-05-12
Frazier, Roy D.
Locks
Systems
Operation and control
70275, 70316, 70352, 70385, 70405, 70DIG48, E05B 1906, E05B 3508, E05B 3716, E05B 5102
Patent
active
042664152
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 authorized user for insertion into the lock to operate the coding assembly. Two separate coding assemblies are provided with a hotel door lock, one being for use by a guest and the other under the control of the hotel management.
REFERENCES:
patent: 299066 (1884-05-01), Fuller
patent: 1406813 (1922-02-01), Bailly
patent: 1797384 (1931-03-01), Ward et al.
patent: 1986125 (1935-01-01), Teichmann
patent: 2298776 (1942-10-01), Rhein
patent: 2692495 (1954-10-01), Verdan
patent: 3505841 (1970-04-01), Sinclair
patent: 3524334 (1970-08-01), Salvesen
patent: 3680336 (1972-08-01), Schendel
patent: 3780548 (1973-12-01), Anastasov
patent: 3893314 (1975-07-01), Raymond
patent: 4114410 (1978-09-01), Astier
Casella Anthony J.
Frazier Roy D.
Pietruszka Carl F.
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