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2 169 299

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(51)

IPC

(21) (22)

Application

2000101548/06, 2000-01-25

(24)

Start date

2000-01-25

(22)

Actual filing date

2000-01-25

(45)

Published

2001-06-20

(72)

Inventor

Pelevin Ju.V.Ruzhitskij V.P.Balabyshko A.M.Rakitin A.N.

(73)

Holder

Pelevin Jurij VladimirovichRuzhitskij Vladimir PetrovichBalabyshko Aleksandr MikhajlovichRakitin Aleksandr Nikolaevich

PLUNGER-TYPE HYDRAULIC JACK WITH REPLACEABLE INSERTS AND UNLOADING UNITS AT MAXIMUM SEPARATION AND FOLDING-UP Russian patent published in 2001 - IPC

Abstract RU 2169299 C1

FIELD: mechanical engineering; powered supports of extraction complexes. SUBSTANCE: jack includes body, plunger, extension cylinder, rod and valve unit; jack is also provided with unloading devices at maximum separation and folding-up performed by means of pusher opening the relief valve which is connected with check valve; body of hydraulic jack is provided with replaceable inserts. EFFECT: enhanced durability and reliability of jack; enhanced wear resistance of hydraulic cylinder and plunger surfaces. 3 dwg

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RU 2 169 299 C1

Authors

Pelevin Ju.V.

Ruzhitskij V.P.

Balabyshko A.M.

Rakitin A.N.

Dates

2001-06-20—Published

2000-01-25—Filed