Pneumatic door lock
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 22, 2000
Grant Date -
N/A
app pub date -
Sep 15, 1997
filing date -
Sep 20, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention concerns a lock for doors or operationally similar structures, the lock mechanism being manually actuated with the aid of pneumatic means, without the need for external energy. Means for manually producing overpressure are rigidly connected to a door. Further means are provided for converting the overpressure into a mechanical movement of parts of the closure mechanism, such that there is no longer any force-locking connection between the door and a counterpart in the door frame whereby the door can be opened.
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