PNEUMATIC MECHANICAL LOCK Russian patent published in 2010 - IPC E05B51/02 

FIELD: construction.

SUBSTANCE: device that permits lock opening is arranged in the form of pneumatic chamber with movable wall, which is joined by traction rod to double-arm lever of latch closed position fixator, and internal cavity of chamber is communicated by control pneumatic channel to at least one outlet atmospheric hole, which may close. Mechanical drive of lock latch is equipped with friction clutch, which serves as maximum torque limiter and is installed between element that generates motion and element that affects lock latch. Invention applies code unit with profiled key, which is arranged in the form of several openings of control pneumatic channel same as outlet atmospheric holes parallel to available inlet channels.

EFFECT: invention makes it possible to reduce number of manipulations in lock closing and opening, to replace active air supply to passive one, which does not require any compressors, pumps or pneumatic pressure accumulated in cylinder.

3 cl, 3 dwg