Hydraulic actuated pump

• US 3,048,121 A
• Filed: 04/14/1960
• Issued: 08/07/1962
• Est. Priority Date: 04/14/1960
• Status: Expired due to Term

• Current Assignee: John M. Sheesley
• Original Assignee: John M. Sheesley
• Inventors: Sheesley, John M.
• Application Number:
  US04/022,233
• Time in Patent Office: 845 Days
• US Class Current: 417/394
• CPC Class Codes: F01L 25/063 the auxiliary valve being actuated by the working motor-piston or piston-rod
• CPC Class Codes: F01L 25/08 by electric or magnetic means
• CPC Class Codes: F04B 43/0072 of tubular flexible members
• CPC Class Codes: F04B 43/113 the actuating fluid being controlled by at least one valve
• CPC Class Codes: F04B 43/1136 with two or more pumping chambers in parallel

Claims