Low head, high volume pump apparatus

Patent · Sun Jan 01 04:00:00 EST 1989

OSTI ID:866922

Avery, Don E ^[1]; Young, Bryan F ^[2]

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1. 45-437 Akimala St., Honolulu, HI 96744
2. 66-489 Pikai St., Honolulu, HI 96712

An inner cylinder and a substantially larger outer cylinder are joined as two verticle concentric cylinders. Verticle partitions between the cylinders divide the space between the cylinders into an inlet chamber and an outlet chamber which is substantially larger in volume than the inner chamber. The inner cylinder has a central pumping section positioned between upper and lower valve sections. In the valve section ports extend through the inner cylinder wall to the inlet and outlet chambers. Spring loaded valves close the ports. Tension springs extend across the inlet chamber and compression springs extend across the inner cylinder to close the inlet valves. Tension springs extend across the inner cylinder the close the outlet valves. The elastomeric valve flaps have rigid curved backing members. A piston rod extends through one end cover to move a piston in the central section. An inlet is connected to the inlet chamber and an outlet is connected to the outlet chamber.

• Research Organization: AV-YO INC
• DOE Contract Number: FG01-86CE15278
• Assignee: Avery; Don E. (45-437 Akimala St., Honolulu, HI 96744); Young; Bryan F. (66-489 Pikai St., Honolulu, HI 96712)
• Patent Number(s): US 4822261
• OSTI ID: 866922
• Country of Publication: United States
• Language: English

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