Metering pump

• US 3,302,578 A
• Filed: 04/28/1965
• Issued: 02/07/1967
• Est. Priority Date: 04/28/1965
• Status: Expired due to Term

• Current Assignee: Anderson, Alfred J.
• Original Assignee: Anderson, Alfred J.
• Inventors: Anderson, Alfred J.
• Application Number:
  US04/451,589
• Time in Patent Office: 650 Days
• US Class Current: 417/488
• CPC Class Codes: F04B 1/00 Multi-cylinder machines or pumps characterised by number or arrangement of cylinders machines or pumps with pistons coacting within one cylinder F04B3/00
• CPC Class Codes: F04B 3/00 Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
• CPC Class Codes: F04B 49/06 Control using electricity regulating by means of floats actuating electric switches F04B49/04
• CPC Class Codes: F04B 7/045 Two pistons coacting within one cylinder

Claims

1. A PUMP FOR PUMPING FLOWABLE MATERIALS COMPRISING:

(A) A CYLINDER WITH AN INLET PORT IN ITS SIDEWALL AT ONE POINT ALONG THE LONGITUDINAL AXIS OF THE CYLINDER AND AN OUTLET PORT IN ITS SIDEWALL AT ANOTHER POINT ALONG THE LONGITUDINAL AXIS OF THE CYLINDER, (B) TWO PISTONS ARRANGED IN TANDEM WITHIN THE CYLINDER, (C) CYCLIC DRIVE MEANS WHICH STROKES THE TWO PISTONS BACK AND FORTH IN SYNCHRONISM WITHIN THE CYLINDER, SAID CYCLIC DRIVE MEANS BEING CONNECTED TO ONE OF SAID PISTONS THROUGH A SINGLE DRIVE ROD WITHOUT EMPLOYING CAMS AND TO THE OTHER PISTON THROUGH A CONNECTION WHICH DURING OPERATION OF THE DRIVE MEANS PROVIDES CONTINUOUS ENGAGEMENT OF SAID DRIVE MEANS WITH SAID OTHER PISTON AND