HYDRAULIC JACK WITH SCREW SUPPORT FUNCTION Russian patent published in 2015 - IPC B66F1/08 B66F3/24 

FIELD: machine building.

SUBSTANCE: hydraulic jack comprises the housing joined with the guide bush with a possibility of axial vertical movement, the piston with stem, the support, the nut, the connecting element and the stem fixing device. The guide bush is installed in the housing and fitted with the upper and lower covers. On the lower end of the stem the support is hingedly installed, and on its lower part the thread is made for reciprocal interaction with the nut integrated with the cylindrical housing used as a stopper between the nut and the guide bush. The housing is installed with a possibility of rotation. The stem fixing device by one end is joined with the cylindrical housing, by another end - with the connecting element.

EFFECT: improved reliability.

4 cl, 1 dwg