Hydraulic apparatus

Details Hydraulic apparatus Hydraulic apparatus

2008-07-18

2011-11-08

Freay, Charles (Department: 3746)

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Radially disposed cylinders

C417S270000, C417S273000

Reexamination Certificate

active

08051763

ABSTRACT:
In a hydraulic apparatus, a first rotating member and a second rotating member are provided so as to be relatively rotatable with a same central axis, a cam is provided on the first rotating member, pistons are arranged on the second rotating member so as to be opposed to the cam, the pistons are pressed against the cam to contact by compression coil springs, oil chambers of which volumes are expanded and contracted according to movements of the pistons are provided on the second rotating member, first and second fluid paths through which oil flows into and out from the oil chambers are provided, and a path switching device for switching an inflow direction and an outflow direction of the oil in the first and second fluid paths according to difference in pressure between the first and second fluid paths is provided.

REFERENCES:
patent: 3785250 (1974-01-01), Steiger
patent: 4006668 (1977-02-01), Steiger
patent: 4889096 (1989-12-01), Brunel
patent: 5901802 (1999-05-01), Sunohara et al.
patent: 7048516 (2006-05-01), Maier et al.
patent: 2009/0060765 (2009-03-01), Kuwabara et al.
patent: 156527 (1943-05-01), None
patent: 51 143034 (1976-11-01), None
patent: 62 34183 (1987-02-01), None
patent: 2 108866 (1990-04-01), None
patent: 9 303256 (1997-11-01), None
patent: 2004 190522 (2004-07-01), None
patent: 2006 112460 (2006-04-01), None
patent: 2006 349114 (2006-12-01), None

Affiliated with

Also associated with

Rating

Hydraulic apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4276185