High security axial pin tumbler lock

Details High security axial pin tumbler lock High security axial pin tumbler lock

1990-03-19

1991-05-28

Smith, Gary L.

Locks

Operating mechanism

Key

70419, E05B 2700

Patent

active

050183761

ABSTRACT:
An improved, highly pick-resistant axial pin tumbler lock construction incorporating a composite tumbler sleeve assembly made up of at least two limitedly rotatable or floating plates and the stationary tumbler sleeve portion which by virtue of providing a potential rotation as much as 1/2 the arcuate distance between pin bore centers of the floating plates provides false shear planes that preclude tight and loose feels when manipulating driver pins in an attempted picking operation. In the preferred embodiment at least one pin column has at least three pin segments and the floating plates are incorporated with the construction of Johnson U.S. Pat. No. 4,802,354 to provide the highest degree of pick resistance.

REFERENCES:
patent: Re28319 (1975-01-01), Kerr
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patent: 3422646 (1969-01-01), Monahan
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patent: 3693384 (1972-09-01), Genakis
patent: 3738136 (1973-06-01), Falk
patent: 3756049 (1973-09-01), Kerr
patent: 3808854 (1974-05-01), Mercurio
patent: 3885409 (1975-05-01), Genakis
patent: 3916657 (1975-11-01), Steinbach
patent: 4041739 (1977-08-01), Mercurio
patent: 4233828 (1980-11-01), Davenbaugh
patent: 4446709 (1984-05-01), Steinbach
patent: 4507945 (1985-04-01), Hwang
patent: 4621510 (1986-11-01), Scherbing
patent: 4653297 (1987-03-01), Moorhouse
patent: 4716749 (1988-01-01), Johnson
patent: 4735069 (1988-04-01), Steinbach
patent: 4802354 (1989-02-01), Johnson

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