THRUSTER Russian patent published in 2008 - IPC B66F3/24 B66F1/08 

FIELD: transport.

SUBSTANCE: invention relates to machine building, particularly, to liquid- or air-operated drive and can be used in load-lifting appliances with load locking in the no-pressure conditions as well as in clamping devices of tooling. The thruster contains a housing accommodating a piston with a rod furnished with a non-irreversible thread. The rod accommodates a spring-loaded dog to transmit rotary motion to screw matching, by the said non-irreversible thread with a pitch equal to that of the screw, with the housing cover, and is furnished with a slot receiving the said dog and an output element arranged enveloping the cover. In compliance with the proposed invention, the rod non-irreversible thread is an outer one received in the housing cover sleeve. The aforesaid non-irreversible thread screw is arranged inside the cover outside the housing. The rod end linked to the piston is furnished with a spherical surface to reduce friction.

EFFECT: higher efficiency, expanded performances thanks to using both air and liquid as working medium.

2 dwg