Title: Door lock

Abstract: A vehicle door lock (201) and latch (204) assembly is provided whereby a key may be used to lock the door (200) and to prevent rotation of the outside door handle (214). An inside door handle (202) is provided remote from the lock assembly (201) and connected thereto by a linkage (216,232,246) which enables the inside handle (202) to operate the lock assembly (201) by overridng the key lock (308). The inside handle (202) can move the linkage to open the door (200) and lock or unlock the lock assembly (201). The outside handle (214) can open the door (200) only if the lock assembly (201) is unlocked. The lock assembly (201) may be unlocked from the outside only by turning the key in the lock (308) to the unlocked position.

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Inventors: Kaveney Jr., John R. (East Peoria, IL)

Application Number: 06/250753
Filing Date: 1980-07-07
Publication_date: 1983-02-01
Assignee: CATERPILLAR TRACTOR CO

Primary Class(es): 292/48 292/336.300, 70/145, 292/359
Other Classes: E05B65/20; E05C3/06
US Patent Ref:

1908958	May, 1933	Coffron	292/1	Automobile doorlock
2682763	July, 1954	Williams	292/175	Garage door latch
2791459	May, 1957	Roethel	292/DIG.24	Door lock
3140888	July, 1964	DiSalvo	292/48	Door latch mechanism
3232656	February, 1966	Coverley et al.	292/280	Door latches for automobile doors
3312489	April, 1967	Trudeau	292/48	Door latch mechanism
3361462	February, 1966	Foster	292/165	Mortise type latch assembly with reversible blocker means for knob detent
4049305	September, 1977	Zetterlund et al.	292/336.3	Cab door latch mechanism
4216985	August, 1980	Sorensen	292/336.3	Window lock operating device
4277964	July, 1981	Crabb et al.	292/153	Door lock

Other Refs:
Primary Examiner: Moore, Richard E.
Assistant Examiner:
Attorney: Wegner, Stellman, McCord, Wood & Dalton

Claims: