Hydraulic jack

PCT No. PCT/SU82/00034 Sec. 371 Date Jul. 5, 1983 Sec. 102(e) Date Jul. 5, 1983 PCT Filed Oct. 29, 1982 PCT Pub. No. WO83/01811 PCT Pub. Date May 26, 1983.A hydraulic jack includes a body (1) with front (2) and rear (3) covers and a rod (4) moving relative to said body (1) and having at least one pr...

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Hauptverfasser:	SADOVSKY, DECEASED, TOM P, SEMENOV, ALEXANDR N, SAMOILOV, VLADIMIR P, GRIGORIEV, SERGEI M
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CYLINDERS DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR EARTH DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GALLERIES GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAULING HEATING HOISTING HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDEDFOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCEDIRECTLY TO THE SURFACE OF A LOAD HYDRAULICS OR PNEUMATICS IN GENERAL LARGE UNDERGROUND CHAMBERS LIFTING LIGHTING MECHANICAL ENGINEERING MINING PERFORMING OPERATIONS PISTONS SEALINGS SHAFTS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL THERMAL INSULATION IN GENERAL TRANSPORTING TUNNELS WEAPONS
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Beschreibung
Zusammenfassung:	PCT No. PCT/SU82/00034 Sec. 371 Date Jul. 5, 1983 Sec. 102(e) Date Jul. 5, 1983 PCT Filed Oct. 29, 1982 PCT Pub. No. WO83/01811 PCT Pub. Date May 26, 1983.A hydraulic jack includes a body (1) with front (2) and rear (3) covers and a rod (4) moving relative to said body (1) and having at least one projection made therein and mounting an additional member (7) and at least two grooves which form the respective projection (8) and of which each accomodates piston semi-rings (6) installed therein by pairs, the rod (4) portion having the projections (8) and the grooves forming a piston unit (5).