Keyless lock

Details Keyless lock Keyless lock

1987-05-07

1989-01-24

Wolfe, Robert L.

Locks

Special application

For control and machine elements

70298, 70284, E05B 3716

Patent

active

047993715

ABSTRACT:
A keyless button lock is described in which a plurality of lock buttons are provided, each button requiring a particular number of presses to attain an open or lock release position. A lock element is also provided which, when actuated, returns all buttons to a locked position. The buttons have more than one release or open position so that master and grand master keying can be provided. The lock may be coupled to a door lock mechanism in a single unit to minimize space and complexity. Embodiments of the invention are described.

REFERENCES:
patent: 1530861 (1925-03-01), Standen
patent: 2000111 (1935-05-01), Weis
patent: 3099150 (1963-07-01), Check
patent: 3435647 (1969-04-01), Le Blanc

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