Title:
HYDRAULIC JACK
Document Type and Number:
WIPO Patent Application WO/1983/001811
Kind Code:
A1
Abstract:
The hydraulic jack comprises a casing (1) with a face cover (2) and a back cover (3) and a piston rod (4) moving in relation to each other, on which rod there are provided a sealing element (7) and at least two grooves to form a corresponding rib (8). On each of said grooves, piston semi-rings (6) are arranged pairwise, and thus the portion of the rod (4) with the ribs (8) and grooves forms a piston unit (5).
Inventors:
GRIGOREV SERGEI MIKHAILOVICH (SU)
SEMENOV ALEKSANDR NIKOLAEVICH (SU)
SAMOILOV VLADIMIR PAVLOVICH (SU)
SADOVSKY TOM PETROVICH (SU)
SEMENOV ALEKSANDR NIKOLAEVICH (SU)
SAMOILOV VLADIMIR PAVLOVICH (SU)
SADOVSKY TOM PETROVICH (SU)
Application Number:
PCT/SU1982/000034
Publication Date:
May 26, 1983
Filing Date:
October 29, 1982
Export Citation:
Assignee:
SP KT B (SU)
International Classes:
B66F3/25; E21D9/06; E21D15/44; F15B15/14; F15B15/20; F16J9/20; F16J10/02; (IPC1-7): E21D9/06; E21D15/44
Foreign References:
| US3603215A | 1971-09-07 | |||
| US3785253A | 1974-01-15 | |||
| SU607992A1 | 1978-05-25 |
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