Repairable key for plunger lock

Details Repairable key for plunger lock Repairable key for plunger lock

1993-04-15

1994-04-12

Cuomo, Peter M.

Locks

Portable

Padlocks

70404, 70386, E05B 1918

Patent

active

053015240

ABSTRACT:
A hand repairable plunger lock key includes a hollow body in which is hand inserted or removed a pair of springs and a cartridge which tends to periodically wear out and require replacement. A cap is threaded to the body and is manually removed or attached without tools. A key operating cam has a pin which is releasably secured to a mating slot in the cartridge operating shaft which protrudes from the cap. The body and cap are resiliently displaced a distance sufficient for the slot to be engaged or disengaged with the cam pin. Once engaged, the body and cap are released to normally bias the pin to the shaft slot via springs in the key used to bias the cam against the cap.

REFERENCES:
patent: 4015456 (1977-04-01), Moberg
patent: 4144729 (1979-03-01), Nielsen, Jr.
patent: 4155232 (1979-05-01), Haus, Jr. et al.
patent: 4252006 (1981-02-01), Swisher
patent: 4254647 (1981-03-01), Finck, Jr.
patent: 4296616 (1981-10-01), Guiler
patent: 4483164 (1984-11-01), Nielsen, Jr. et al.
patent: 4492100 (1985-01-01), Swisher
patent: 4513591 (1985-04-01), Carlson et al.
patent: 4635452 (1987-01-01), Agbay
patent: 4712395 (1987-12-01), Agbay
patent: 4751831 (1988-06-01), Morris et al.
patent: 4840049 (1989-06-01), Russo
patent: 5027624 (1991-07-01), Agbay et al.

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