Double acting rack and gear-driven piston pump

Details Double acting rack and gear-driven piston pump Double acting rack and gear-driven piston pump

1976-10-14

1978-06-27

Freeh, William L.

Pumps

With condition responsive pumped fluid control

Plural pump units with individual or relative control

417529, 417539, 92136, F04B 4900, F04B 2104

Patent

active

040971996

ABSTRACT:
A hand-operated hydraulic pump utilized to lift or trim an outboard marine engine. A wobble-action handle connects with a pinion gear which in turn drives a rack on a double-ended piston forming two cylinder chambers on opposite ends thereof. Reciprocal movement of the piston alternately pumps fluid from each cylinder chamber both of which are supplied by a common longitudinal passage in the piston across a pair of check valves located at each end of the piston. The pump housing includes the reservoir, discharge port and needle valve for relieving fluid from the discharge port back to the reservoir.

REFERENCES:
patent: 805530 (1905-11-01), Davis
patent: 1365506 (1921-01-01), Krieger
patent: 1864609 (1932-06-01), Musolf
patent: 2192175 (1940-03-01), Ballard
patent: 2334383 (1943-11-01), Carr et al.
patent: 2680347 (1954-06-01), Kanuch
patent: 2776624 (1957-01-01), Reinhard
patent: 2844128 (1958-07-01), Steiner
patent: 3288035 (1966-11-01), Ryzner
patent: 3437044 (1969-04-01), Sanders

Affiliated with

Also associated with

Rating

Double acting rack and gear-driven piston pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Double acting rack and gear-driven piston pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double acting rack and gear-driven piston pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2301776