System for locking doors of buses

Details System for locking doors of buses System for locking doors of buses

1974-02-14

1976-01-27

Spar, Robert J.

Land vehicles: bodies and tops

Bodies

Variable capacity of body

49345, 49351, 180112, 292 6, 292202, B62D 3102

Patent

active

039349250

ABSTRACT:
To meet the legal requirements for bus safety, all locking devices on entrance and emergency doors must be removed before the bus is placed in service. For that purpose, the ignition key is made part of a simple locking assembly that is used to lock the emergency door. The driver's obtaining the key to operate the bus engine, insures the unlocking of the emergency door. The unlocking of the entrance door is accomplished by an inside pivoted cam assembly, actuated by a locking handle on the outside of the bus. The unlocking pivoted cam assembly inside the bus, then entirely disengages the door controlling mechanism, which then has normal operating freedom.

REFERENCES:
patent: 1060251 (1913-04-01), Hagstrom
patent: 1416308 (1922-05-01), Silverman et al.
patent: 1477992 (1923-12-01), Benedict et al.
patent: 2098126 (1937-11-01), Zaitz
patent: 2198796 (1940-04-01), Williams
patent: 2604180 (1952-07-01), Onstott
patent: 2725099 (1955-11-01), Frie et al.

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