Control device for hydraulic cylinder and operating machine...

Power plants – Pressure fluid source and motor – Apparatus having means responsive to or ameliorating the...

Reexamination Certificate

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Details

C060S445000

Reexamination Certificate

active

07849685

ABSTRACT:
A control device includes an arm cylinder having a cylinder body and a piston that slides inside the cylinder body and a pump that supplies working oil to the arm cylinder, and decelerates the piston when it approaches a stroke end of the arm cylinder by adjusting a supply rate of the working oil supplied from the pump to the arm cylinder and a discharge rate of the working oil discharged from the arm cylinder. The position at which the piston starts decelerating is set further from the stroke end as the moving speed of the piston becomes higher.

REFERENCES:
patent: 4399653 (1983-08-01), Pylat
patent: 4741159 (1988-05-01), Gunda et al.
patent: 5953976 (1999-09-01), Bueter
patent: 1566717 (2005-01-01), None
patent: 2 413 862 (2005-11-01), None
patent: 01-139101 (1989-09-01), None
patent: 04-181003 (1992-06-01), None
patent: 06-32702 (1994-04-01), None
patent: 2004-100759 (2004-04-01), None
patent: 2004-293628 (2004-10-01), None

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