Power tilt cylinder device

Details Power tilt cylinder device Power tilt cylinder device

1997-03-20

1998-09-08

Nguyen, Hoang

Motors: expansible chamber type

With motive fluid valve

Valved piston

92 85R, 92181P, 92255, F15B 1108, F01B 1102

Patent

active

058029532

ABSTRACT:
In a power tilt cylinder device 100, a hydraulic fluid is supplied to the opposite piston side space 22B of a free piston 25, in the upper limit position of upward tilting, which is performed for discharging the hydraulic fluid from the first chamber 21, an operation valve 62 is pushed open by a rod guide 18A, and a flow passage 64 directed from the opposite piston side space 22B of the free piston 25 toward the first chamber 21 is caused to be conductive via a check valve 61 and the operation valve 62.

REFERENCES:
patent: 3448658 (1969-06-01), Arnes
patent: 4242946 (1981-01-01), Toliusis
patent: 4497197 (1985-02-01), Giardino et al.
patent: 4509409 (1985-04-01), Reeves
patent: 4932313 (1990-06-01), Gutknecht
patent: 5341723 (1994-08-01), Hung
patent: 5437339 (1995-08-01), Tanaka

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