Perfected pneumatic system hoist actuator (Machine-translation by Google Translate, not legally binding)

摘要

PERFECTED PNEUMATIC SYSTEM PASSENGER ACTUATOR characterized by being constituted with a box of distribution of air under pressure equipped with a reception of said air and of an outlet of this under pressure by an opposite cylindrical spike provided with two parallel horizontal channels symmetrically placed with respect to the plane vertical longitudinal of figure of said box and each ending with an opposite lateral outlet; a hollow cylindrical valve provided in its outer central region with circular rack teeth mounted slidably within a cylindrical sleeve located snugly inside the cylindrical interior of the distribution box; sealing means in the area where the valve can slide in one direction and another; means that tend to maintain said valve in its middle position for closing the passage of air under pressure; a key terminated at its internal end with a pinion that meshes with the valve rack and at its other end it emerges hermetically from the box and is fitted with a double control lever with equal arms; a communication at each end of the field of the valve with two respective circular channels existing between said sleeve and the cylindrical internal surface of the box each communicating with one of said parallel channels; a circular plate to which the aforementioned distribution box is attached so that said cylindrical projecting spigot traverses it eccentrically; said circular plate is connected concentrically to the circular external face of a pocket that eccentrically receives the said projection of said box; means for distributing the air stream under pressure and means for rotating said current on the shaft of the maneuvering elements of the loads. (Machine-translation by Google Translate, not legally binding)