71698127
Nov 14, 1955
Jun 11, 1957
GAS OPERATED ACTUATORS HAVING A VALVED DIAPHRAGM SEPARATING GAS CHAMBERS AT EACH SIDE OF THE DIAPHRAGM, THE DIAPHRAGM BEING CAUSED TO MOVE A ROD FOR DRIVING OTHER MECHANISMS WHEN GAS PRESSURE IS APPLIED OR RELEASED IN ONE OF THE GAS CHAMBERS
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