Keyless lock
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 24, 1989
Grant Date -
N/A
app pub date -
May 7, 1987
filing date -
May 7, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
First Claim
Family
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Cited Art Landscape
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