METHOD OF OPERATING HYDRAULIC PRESS-FITTING DEVICE, HYDRAULIC PRESS-FITTING DEVICE WITH HYDRAULIC PUMP Russian patent published in 2011 - IPC B25B27/02 B21J15/20 

Abstract RU 2428301 C2

FIELD: process engineering.

SUBSTANCE: invention relates to method of operating hydraulic press-fitting device, hydraulic press-fitting device with hydraulic pump. Proposed device comprises hydraulic pump, moving part, stationary part and check valve. Moving part moves into press-fitting position on creating pressure in hydraulic chamber. Return spring forces moving part from press-fitting position back into initial position. Check valve closed after pressure drops below preset level due to back flow of hydraulic medium. Means arranged ahead of check valve act on hydraulic medium with check valve open. Said means inhibit hydraulic flow to cause pressure drop to change check valve into closed position.

EFFECT: selective stop of moving part in selected position.

26 cl, 6 dwg

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RU 2 428 301 C2

Authors

Frenken Ehgbert

Dates

2011-09-10Published

2007-05-29Filed