Piston pump with rolling membrane

Details Piston pump with rolling membrane Piston pump with rolling membrane

1987-06-19

1988-09-27

Garrett, Robert E.

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92165PR, 277177, F01B 1900

Patent

active

047733055

ABSTRACT:
A piston pump having a flexible rolling membrane which seals the piston from the cylinder wherein the piston is designed to include an upper portion which is spaced inwardly from the cylinder wall so as to form a cavity which communicates through channels and seals carried by the lower portion of the piston in such a manner that the lower portion of the flexible membrane is depressed between the upper portion of the piston face and the cylinder walls during an intake stroke as the cavity is subjected to a decreased pressure and which decreased pressure is removed from the membrane during a discharge stroke of the piston. In the preferred embodiment, the membrane is secured to the upper surface of the piston by a cup-shaped element which protects the membrane from materials within the cylinder.

REFERENCES:
patent: 3185041 (1965-05-01), Stein
patent: 3373694 (1968-03-01), Taplin
patent: 3375759 (1968-04-01), Smith
patent: 3620652 (1971-11-01), Jaspers
patent: 3783745 (1974-01-01), Meijer
patent: 3982471 (1976-09-01), Finger
patent: 4016960 (1977-04-01), Wilcox
patent: 4577870 (1986-03-01), Scott et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2392857