Piston pump or motor having internal fluid filter

Details Piston pump or motor having internal fluid filter Piston pump or motor having internal fluid filter

1975-05-05

1977-01-11

Freeh, William L.

Motors: expansible chamber type

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

Cylinders parallel to rotation axis

92 78, F01B 1304

Patent

active

040021041

ABSTRACT:
A piston pump or motor in which each piston has a filter element disposed thereon between the fluid working chambers and the outer circumference of the piston. The filter element permits the passage of small amounts of fluid between the piston circumference and cylinder bore for proper lubrication and pressure balance while preventing solid foreign matter such as dust or grit from entering therebetween.

REFERENCES:
patent: 846226 (1908-03-01), Medlock
patent: 1289168 (1918-12-01), Heginbottom
patent: 2300009 (1942-10-01), Rose
patent: 2557508 (1951-06-01), Leibing
patent: 2711724 (1955-06-01), Jenny
patent: 2976863 (1961-03-01), Duer et al.

Affiliated with

Also associated with

Rating

Piston pump or motor having internal fluid filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piston pump or motor having internal fluid filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piston pump or motor having internal fluid filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1738505