Pump

• US 3,402,673 A
• Filed: 10/10/1966
• Issued: 09/24/1968
• Est. Priority Date: 10/10/1966
• Status: Expired due to Term

• Current Assignee: John W. Ballentine, Leslie A. Woodson, William S. Shamban
• Original Assignee: John W. Ballentine, Leslie A. Woodson, William S. Shamban
• Inventors: Ballentine, John W., Woodson, Leslie A., Shamban, William S.
• Application Number:
  US04/585,505
• Time in Patent Office: 715 Days
• US Class Current: 417/477.1
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Claims

1. IN A PUMP ADAPTED TO FORCE MATERIAL THROUGH A COMPRESSIBLE TUBE, THE COMBINATION OF:

A HOLLOW PUMP HOUSING A SECTION OF THE COMPRESSIBLE TUBE BEING POSITIONABLE WITHIN SAID PUMP HOUSING;

BEARING MEANS ON SAID PUMP HOUSING EXTENDING INTO THE INTERIOR OF SAID PUMP HOUSING;

A SHAFT ROTATABLY MOUNTED BY SAID BEARING MEANS AND HAVING AN END PORTION EXTENDING INWARDLY INTO SAID PUMP HOUSING;

A ROTOR HAVING A HUB PORTION MOUNTED FOR ROTATION WITH SAID END PORTION OF SAID SHAFT, SAID ROTOR HAVING AN OUTER PORTION SECURED TO SAID HUB PORTION AND EXTENDING GENERALLY RADIALLY OUTWARDLY OF SAID HUB PORTION AND IN ONE DIRECTION GENERALLY AXIALLY OF SAID SHAFT TO CAUSE AT LEAST A PORTION OF SAID BEARING MEANS TO LIE WITHIN SAID OUTER PORTION OF SAID ROTOR;

AND IMPELLER MEANS SECURED TO SAID OUTER PORTION OF SAID ROTOR AND ENGAGEABLE WITH THE SECTION OF THE COMPRESSIBLE TUBE FOR COMPRESSING THE TUBE AND CAUSING THE MATERIAL TO MOVE THROUGH THE TUBE.