SUBMERGED ELECTRO-HYDRAULIC DEVICE

WIPO Patent Application WO/2003/083303

A1

The inventive device comprises a submerged electric motor provided with a hydroprotection and cinematically connected to a driven pump, an operating pump actuated by a hydraulic engine which comprises a reciprocating mechanism for moving the rod of the operating pump, a hydraulic control valve connected to a control unit for the driven pump by means of a pipeline and the compensator ofa hydraulic actuator. The reciprocating mechanism for moving the rod of the operating pump comprises power and return hydraulic cylinders which are connected by means of rods and embodied in such a way that it is possible to switch over the positions of the hydraulic control valve at the end-of-travel of the rod of the hydraulic engine. In addition, the control unit for the driven pump comprises a unit for protection the hydraulic actuator against the reverse rotation of the electric motor shaft. The compensator of the hydraulic actuator is arranged in the top part of the device above the operating pump.

GANIEV RISHAT RAFAELOVICH (RU)
MAKEEV ALEKSANDR MIKHAILOVICH (RU)
AKHMADULLIN RAMIL GAYAZOVICH (RU)
LUKIN ALEKSEI VASILEVICH (RU)
KOZLOV RAUF IZMAILOVICH (RU)
KARIMOV RAFAIL KIYAMOVICH DI

PCT/RU2003/000128

October 09, 2003

March 31, 2003

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ALNAS AOOT (RU)
GANIEV RISHAT RAFAELOVICH (RU)
MAKEEV ALEKSANDR MIKHAILOVICH (RU)
AKHMADULLIN RAMIL GAYAZOVICH (RU)
LUKIN ALEKSEI VASILEVICH (RU)
KOZLOV RAUF IZMAILOVICH (RU)

F04B47/08; (IPC1-7): F04B47/08

RU2116512C1	1998-07-27
RU2125664C1	1999-01-27
RU2166668C1	2001-05-10
RU2122141C1	1998-11-20
SU1562524A1	1990-05-07
US4477234A	1984-10-16
FR2576980A2	1986-08-08
DE3742660A1	1989-07-13

Patent, Law Firm 'YUS' (PLF "YUS" Moscow, 9, RU)

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