Title:
LIFTING DEVICE
Document Type and Number:
WIPO Patent Application WO/1986/002624
Kind Code:
A1
Abstract:
A lifting device comprises a hydraulic cylinder (1), the piston (3) of which is connected through a flexible coupling (6) to a lifting reservoir (7). The flexible coupling (6) at the point of its outlet from the cylinder (1) is passed through a sealing unit (9) consisting of two consecutive chambers (10, 11) divided with sealing elements (12, 13, 14). The chamber (10) adjacent to the hollow of the casing is filled with a viscous liquid, the viscosity of which is higher than that of the working liquid whereas the other chamber (11) is connected to a separator (18) adapted for separation of the working and viscous liquids and their feeding, correspondingly, to the hollow (4) of the cylinder and to the chamber (10) of the sealing unit (9).
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Inventors:
NEGRUTSKY SERGEI BORISOVICH (SU)
CHURKIN VLADIMIR GAVRILOVICH (SU)
CHUNIKHIN MIKHAIL IVANOVICH (SU)
CHURKIN VLADIMIR GAVRILOVICH (SU)
CHUNIKHIN MIKHAIL IVANOVICH (SU)
Application Number:
PCT/SU1984/000058
Publication Date:
May 09, 1986
Filing Date:
November 02, 1984
Export Citation:
Assignee:
UPRAV MONT DEMONT REMONT GORNO (SU)
International Classes:
B66B9/04; B66B15/08; F15B15/08; F16J15/40; F16J15/56; (IPC1-7): B66B9/04
Foreign References:
| SU548531A1 | 1977-02-28 | |||
| SU975553A1 | 1982-11-23 | |||
| US4043428A | 1977-08-23 | |||
| US3252547A | 1966-05-24 |
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