skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Reduced energy and volume air pump for a seat cushion

Abstract

An efficient pump system is described for transferring air between sets of bladders in a cushion. The pump system utilizes a reversible piston within a cylinder in conjunction with an equalizing valve in the piston which opens when the piston reaches the end of travel in one direction. The weight of a seated user then forces air back across the piston from an inflated bladder to the previously deflated bladder until the pressure is equalized. In this fashion the work done by the pump is cut in half. The inflation and deflation of the different bladders is controlled to vary the pressure on the several pressure points of a seated user. A principal application is for wheel chair use to prevent pressure ulcers. 12 figs.

Inventors:
; ;
Issue Date:
Research Org.:
Sandia Corporation
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
527768
Patent Number(s):
5,657,499
Application Number:
PAN: 8-586,444
Assignee:
Sandia Corp., Albuquerque, NM (United States) SNL; SCA: 550600; PA: EDB-97:127330; SN: 97001843794
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 19 Aug 1997
Country of Publication:
United States
Language:
English
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; PUMPS; ENERGY EFFICIENCY; MEDICAL SUPPLIES; AIR; PUMPING; AIR FLOW; OCCUPANTS; WEIGHT; BALLOONS; PREVENTIVE MEDICINE

Citation Formats

Vaughn, M.R., Constantineau, E.J., and Groves, G.E. Reduced energy and volume air pump for a seat cushion. United States: N. p., 1997. Web.
Vaughn, M.R., Constantineau, E.J., & Groves, G.E. Reduced energy and volume air pump for a seat cushion. United States.
Vaughn, M.R., Constantineau, E.J., and Groves, G.E. Tue . "Reduced energy and volume air pump for a seat cushion". United States.
@article{osti_527768,
title = {Reduced energy and volume air pump for a seat cushion},
author = {Vaughn, M.R. and Constantineau, E.J. and Groves, G.E.},
abstractNote = {An efficient pump system is described for transferring air between sets of bladders in a cushion. The pump system utilizes a reversible piston within a cylinder in conjunction with an equalizing valve in the piston which opens when the piston reaches the end of travel in one direction. The weight of a seated user then forces air back across the piston from an inflated bladder to the previously deflated bladder until the pressure is equalized. In this fashion the work done by the pump is cut in half. The inflation and deflation of the different bladders is controlled to vary the pressure on the several pressure points of a seated user. A principal application is for wheel chair use to prevent pressure ulcers. 12 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {8}
}