Positive displacement pump with concentrically arranged reciproc

Details Positive displacement pump with concentrically arranged reciproc Positive displacement pump with concentrically arranged reciproc

1994-06-10

1996-01-09

Bertsch, Richard A.

Pumps

Expansible chamber type

Pumping member position controlled port

417493, 417494, 417500, 417532, F04B 704, F04B 3910

Patent

active

054824486

ABSTRACT:
A valveless positive displacement pump having pistons that undergo both rotating and reciprocating motion. The assembly comprises a radially outer, ported first cylinder with an axially outer, closed off end, a radially intermediate combination element having outer surfaces serving as a first piston relative to the main cylinder and inner surfaces defining a cylinder for a second piston. The pistons are concentrically arranged, and each reciprocates and rotates within its own cylinder. The piston part of the intermediate element includes a first chordwise relief adjacent its axially inner end and a second chordwise relief in the middle of its shank portion. An access port extends through a wall of the second relief into the interior of the second element. The axially outer ends of first and second pistons each include means for connection to a drive unit with a rotational axis that intersects but is offset from the rotational and reciprocating pistons.

REFERENCES:
patent: 3168872 (1965-02-01), Pinkerton
patent: 3447468 (1968-01-01), Kinne
patent: 4008003 (1977-02-01), Pinkerton
patent: 4941809 (1990-07-01), Pinkerton
patent: 5015157 (1991-05-01), Pinkerton et al.
patent: 5020980 (1991-06-01), Pinkerton
patent: 5044889 (1991-09-01), Pinkerton
patent: 5092037 (1992-03-01), Pinkerton
patent: 5246354 (1993-09-01), Pardinas
Catalog Pages--R. Hoe & Company Printing Presses, Date unknown--Prior to 1990.
Product Brochure--Fluid Metering, Inc., Feb. 1992.
Magazine Article--"Motion Control Innovations", Designfax, Feb. 1993.

Affiliated with

Also associated with

Rating

Positive displacement pump with concentrically arranged reciproc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Positive displacement pump with concentrically arranged reciproc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positive displacement pump with concentrically arranged reciproc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1299293