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Title: Low head, high volume pump apparatus

Abstract

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.

Inventors:
 [1];  [2]
  1. (45-437 Akimala St., Honolulu, HI 96744)
  2. (66-489 Pikai St., Honolulu, HI 96712)
Issue Date:
Research Org.:
AV-YO INC
OSTI Identifier:
866922
Patent Number(s):
4822261
Assignee:
Avery; Don E. (45-437 Akimala St., Honolulu, HI 96744); Young; Bryan F. (66-489 Pikai St., Honolulu, HI 96712) HQPR
DOE Contract Number:  
FG01-86CE15278
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
head; volume; pump; apparatus; inner; cylinder; substantially; larger; outer; joined; verticle; concentric; cylinders; partitions; divide; space; inlet; chamber; outlet; central; pumping; section; positioned; upper; valve; sections; ports; extend; wall; chambers; spring; loaded; valves; close; tension; springs; compression; elastomeric; flaps; rigid; curved; piston; rod; extends; cover; move; connected; outlet valve; outer cylinder; inlet valve; inlet chamber; substantially larger; inner chamber; cylinder wall; pump apparatus; inner cylinder; central section; piston rod; spring loaded; section positioned; pumping section; compression spring; concentric cylinder; concentric cylinders; /417/92/

Citation Formats

Avery, Don E., and Young, Bryan F. Low head, high volume pump apparatus. United States: N. p., 1989. Web.
Avery, Don E., & Young, Bryan F. Low head, high volume pump apparatus. United States.
Avery, Don E., and Young, Bryan F. Sun . "Low head, high volume pump apparatus". United States. https://www.osti.gov/servlets/purl/866922.
@article{osti_866922,
title = {Low head, high volume pump apparatus},
author = {Avery, Don E. and Young, Bryan F.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

Patent:

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