Hydraulic pump apparatus

Details Hydraulic pump apparatus Hydraulic pump apparatus

1990-04-12

1992-06-30

Smith, Leonard E.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

417572, 92165PR, 921711, F04B 2108, F01B 1102

Patent

active

051258080

ABSTRACT:
A hydraulic pump apparatus which is provided with a sleeve member sealingly accommodated in a housing, a cam member driven by a motor and slidably mounted in the sleeve member, a plunger abutting against the cam member, a plunger chamber housed in the sleeve member, a capacity of which varies in accordance with a slide movement of the plunger, a suction passage and an ejection passage formed in the housing, a fluid introducing passage communicating with the suction passage of the housing, a suction valve disposed between the fluid introducing passage and the plunger chamber, an ejection valve disposed between the plunger chamber and the ejection passage of the housing, a hollow engaging member for preventing the plunger from rotating with respect to the housing, the engaging member is disposed at a position bridging the suction passage of the housing and the fluid introducing passage of the sleeve member.

REFERENCES:
patent: 4406215 (1983-09-01), Lacasse
patent: 4442759 (1984-04-01), Elser
patent: 4509799 (1985-04-01), Roling
patent: 4806064 (1989-02-01), Breese

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1859956