Pump metering device

• US 3,302,577 A
• Filed: 11/10/1964
• Issued: 02/07/1967
• Est. Priority Date: 11/10/1964
• Status: Expired due to Term

• Current Assignee: Alfred G. Barstow, Burns, Russell W.
• Original Assignee: Alfred G. Barstow, Burns, Russell W.
• Inventors: Barstow, Alfred G., Burns, Russell W.
• Application Number:
  US04/410,190
• Time in Patent Office: 819 Days
• US Class Current: 91/1
• CPC Class Codes: F04B 13/00 Pumps specially modified to deliver fixed or variable measured quantities

Claims

1. IN A FLUID PUMP INCLUDING AN ACTUATING ROD MOUNTED FOR RECIPROCATION BETWEEN FIRST AND SECOND LIMIT STOPS DEFINING THE STROKE OF SAID PUMP AND WHEREIN THE QUANTITY OF LIQUID DELIVERED DURING EACH RECIPROCATION IS A FUNCTION OF THE LENGTH OF SAID STROKE, A PUMP METERING DEVICE ADAPTED TO BE SECURED TO SAID PUMP, SAID DEVICE INCLUDING A HOUSING HAVING A CENTRAL BORE;

AN ELONGATED SLEEVE MEMBER LONGITUDINALLY MOVABLE IN SAID BORE AND HAVING INTERNAL THREADS, ONE END OF SAID SLEEVE CONSTITUTES A STOP MEANS DEFINING ONE OF SAID LIMIT STOPS;

KEYING MEANS HOLDING SAID SLEEVE MEMBER AGAINST ROTATION WITHIN SAID BORE WHILE PERMITTING LONGITUDINAL MOVEMENT THEREOF;

AND A LEAD SCREW THREADEDLY RECEIVED IN SAID SLEEVE AND KEYED AGAINST LONGITUDINAL MOVEMENT WHEREBY ROTATION OF SAID LEAD SCREW MOVES SAID SLEEVE IN A LONGITUDINAL DIRECTION TO VARY THE POSITION OF SAID STOP MEANS TO THEREBY VARY THE LENGTH OF SAID STROKE.