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2 109 957

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Application

96113323/03, 1996-06-26

(22)

Actual filing date

1996-06-26

(45)

Published

1998-04-27

(72)

Inventor

Kostjunin Boris NikolaevichTarasov Gennadij Vasil'EvichZadorozhnyj Stanislav StepanovichMoskalenko Anatolij GavrilovichLiderman Mark BorisovichKarpekin Aleksandr Grigor'Evich

(73)

Holder

Kostjunin Boris NikolaevichTarasov Gennadij Vasil'EvichZadorozhnyj Stanislav StepanovichMoskalenko Anatolij GavrilovichLiderman Mark BorisovichKarpekin Aleksandr Grigor'Evich

HYDRAULIC CONTROL VALVE FOR POWERED SUPPORT Russian patent published in 1998 - IPC

Abstract RU 2109957 C1

FIELD: aids controlling hydraulic props and hydraulic jacks of powered supports. SUBSTANCE: hydraulic control valve for powered support has body which bore houses seat, protective bushing with grooves in its face part having rectangular section, step-free control valve with pressure sealing and rest located on tail part of control valve and contacting protective bushing that is put immobile and is provided with sealing contacting bore of body. Grooves have depth that is less than width of pressure sealing of control valve fitted with additional sealing contacting internal surface of protective bushing. EFFECT: enhanced operational characteristics of hydraulic control valve. 1 dwg

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RU 2 109 957 C1

Authors

Kostjunin Boris Nikolaevich

Tarasov Gennadij Vasil'Evich

Zadorozhnyj Stanislav Stepanovich

Moskalenko Anatolij Gavrilovich

Liderman Mark Borisovich

Karpekin Aleksandr Grigor'Evich

Dates

1998-04-27—Published

1996-06-26—Filed

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