Control device for the continuous drive of a hydraulic...

Motors: expansible chamber type – With motive fluid valve – Relatively movable inlet and exhaust valves for single...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C091S461000, C060S422000

Reexamination Certificate

active

07028599

ABSTRACT:
In series between pump and tank are two throttle devices, one of which includes a controllable throttle valve having a piston, of which one side supports a valve head, which forms the boundary of an annular gap between an inflow duct and an outflow duct. A hydraulic control path extends from the inflow duct through the throttle opening to the tank, running through a precontrol bore in the piston. To prevent an unwanted leakage fluid stream, one end of the precontrol bore at the annular gap in the region of the inflow duct is positioned so that it remains opened for a closed annular gap, and the other end of the precontrol bore on the other side of the piston is arranged where the piston, in response to the controllable throttle valve being completely opened, pushes against a stop face and, in so doing, automatically closes this other end.

REFERENCES:
patent: 2672731 (1954-03-01), Ashton
patent: 3433131 (1969-03-01), Soyland et al.
patent: 4201052 (1980-05-01), Breeden et al.
patent: 4437385 (1984-03-01), Kramer et al.
patent: 4830131 (1989-05-01), Miyoshi et al.
patent: 5979498 (1999-11-01), Zenker et al.
patent: 6691604 (2004-02-01), Hajek et al.
patent: 196 01 662 (1997-07-01), None
patent: 63-188574 (1988-08-01), None
Patent Abstracts of Japan, vol. 012, No. 464 (M-771), Dec. 6, 1988.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Control device for the continuous drive of a hydraulic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control device for the continuous drive of a hydraulic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control device for the continuous drive of a hydraulic... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3603205

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.