Pumps – Expansible chamber type – Relatively movable serial distributors
Patent
1979-02-22
1981-04-07
Freeh, William L.
Pumps
Expansible chamber type
Relatively movable serial distributors
417559, F04B 2102
Patent
active
042603420
ABSTRACT:
The invention is directed to a dual-piston reciprocating pump assembly which includes two opposed substantially identical reciprocating pumps, a housing within which the pumps are mounted, a cam mounted on a cam shaft which is driven through a coupling by a stepping motor, each of the pumps including a piston assembly comprising a piston body having a piston end, the other end of the piston body being in the form of a yoke which is mounted for reciprocating motion in the housing, a cam follower carried between the arms of the yoke for engaging the cam face of the cam, a cylinder head having a piston cylinder therein for receiving the piston end, the housing having an end opening for receiving said cylinder head, a guide bushing mounted in the cylinder head for facilitating the assembly of the piston end, an inner bearing bore for the piston end disposed adjacaent the guide bushing, a high-pressure seal disposed adjacent the inner bearing bore, the piston end having substantial radial end play, and a piston spring mounted for urging the piston inwardly to maintain the cam follower in engagement with the cam force;
REFERENCES:
patent: 2026058 (1935-12-01), Perry
patent: 2554481 (1951-05-01), Sheen
patent: 2879714 (1959-03-01), Larson
patent: 3491788 (1970-01-01), Lilayko
patent: 3729022 (1973-04-01), Roach
patent: 3806285 (1974-04-01), Sach
patent: 3981620 (1976-09-01), Abrahams
patent: 3985021 (1976-12-01), Achener
Leka George T.
Paradis Roland C.
Freeh William L.
Giarratana S. A.
Grimes E. T.
Hays R. A.
The Perkin-Elmer Corporation
LandOfFree
Dual-piston reciprocating pump assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual-piston reciprocating pump assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual-piston reciprocating pump assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-286950