Reduced energy and volume air pump for a seat cushion
Abstract
An efficient pump system 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.
- Inventors:
-
- Albuquerque, NM
- Tijeras, NM
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 871097
- Patent Number(s):
- 5657499
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61G - TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60N - SEATS SPECIALLY ADAPTED FOR VEHICLES
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- reduced; energy; volume; air; pump; seat; cushion; efficient; transferring; sets; bladders; utilizes; reversible; piston; cylinder; conjunction; equalizing; valve; reaches; travel; direction; weight; seated; user; forces; inflated; bladder; previously; deflated; pressure; equalized; fashion; cut; half; inflation; deflation; controlled; vary; principal; application; wheel; chair; prevent; ulcers; air pump; reduced energy; volume air; /5/297/
Citation Formats
Vaughn, Mark R, Constantineau, Edward J, and Groves, Gordon E. Reduced energy and volume air pump for a seat cushion. United States: N. p., 1997.
Web.
Vaughn, Mark R, Constantineau, Edward J, & Groves, Gordon E. Reduced energy and volume air pump for a seat cushion. United States.
Vaughn, Mark R, Constantineau, Edward J, and Groves, Gordon E. Wed .
"Reduced energy and volume air pump for a seat cushion". United States. https://www.osti.gov/servlets/purl/871097.
@article{osti_871097,
title = {Reduced energy and volume air pump for a seat cushion},
author = {Vaughn, Mark R and Constantineau, Edward J and Groves, Gordon E},
abstractNote = {An efficient pump system 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}
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