Structure of key and lock barrel for lock set

Details Structure of key and lock barrel for lock set Structure of key and lock barrel for lock set

1991-03-28

1992-07-21

Luebke, Renee S.

Locks

Operating mechanism

Key

70405, 70409, E05B 2900

Patent

active

051312484

ABSTRACT:
A new structure of key and lock barrel for lock set, comprising holder, nut, rotating body, braking bar, washers, barrel plates, covering plate and key; by inserting the key into the rectangular space of all barrel plates and by turning to let its slant faces of different depth push all barrel plates one after another to rotate and turn the notch of all barrel plates to one radial location, the braking bar falls into rotating body to let it rotate within the holder so as to drive corresponding lock plug making the lock open.

REFERENCES:
patent: 3695073 (1972-10-01), Prescott
patent: 3928992 (1975-12-01), Talbot
patent: 4008588 (1977-02-01), Miller et al.
patent: 4111021 (1978-09-01), Roberts
patent: 4127996 (1978-12-01), Malminen et al.
patent: 4267717 (1981-05-01), Martikainen
patent: 4359886 (1982-11-01), Evans et al.
patent: 4370875 (1983-02-01), Piironinen
patent: 4409807 (1983-10-01), Lipschutz
patent: 4667493 (1987-05-01), Takahashi
patent: 4686843 (1987-08-01), Martikainen et al.

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