Corey Bert Welch

US Patent:

20100281619, Nov 11, 2010

Filed:

May 8, 2009

Appl. No.:

12/437987

Inventors:

David B. Beck - Draper UT, US
Jules A. deGreef - Sandy UT, US
Corey Welch - Draper UT, US

Assignee:

R & D PRODUCTS, LLC - Sandy UT

International Classification:

A47C 20/02
A47C 27/08
A47C 21/02
A47C 27/10

US Classification:

5713, 56553, 5498

Abstract:

A system and method for controlling the flow of fluid for an inflatable mattress having multiple, non-interconnected inflatable chambers and a moveable inflatable limb elevation chamber. Each inflatable chamber can be selectively inflated and deflated to vary the pressure exerted from the mattress surface to selected areas of a human body, thereby preventing the formation of decubitus ulcers. The limb elevation chamber may also be selectively inflated and deflated as well being positioned at any desired portion of the inflatable mattress in order to raise one or more human limbs off the surface of the mattress.

US Patent:

20140144535, May 29, 2014

Filed:

Mar 19, 2013

Appl. No.:

13/847462

Inventors:

- Draper UT, US
David B. Beck - Sandy UT, US
Corey B. Welch - North Salt Lake UT, US

Assignee:

Bend Tech, LLC - Draper UT

International Classification:

G05D 7/06
F16K 31/06

US Classification:

137883, 25112915

Abstract:

A valve assembly controls the flow of fluid at very low pressures of about 5 psi or less to and from inflatable chambers. Each valve assembly has a plurality of valves that operate between a closed and an open position. A first conduit or channel directs the fluid to each of the valves; and a plurality of second conduits each associated with one of the plurality of valves communicates with an inflatable chamber. Each of the valves has a valve seat and a valve stem with a head that seats on, or with, the valve seat to effect a seal in the closed position. The valve stem has a portion positioned to be moved by the solenoid when activated. The separate valves also act as relief valves. A vent valve is also provided and configured to operate between open and closed positions.