Patient support structure
CA 1279153 C · Owner: Hill-Rom Company, Inc. · Inventors: Goodwin, Vernon L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved patient support structure comprises an articulatable frame, a plurality of elongated inflatable sacks, and an air blower connected to the sacks which rests atop a neoprene membrane. A variable autotransformer powers the air blower and is controlled by an electronic circuit which balances the autotransformer voltage against a voltage output from a preset variable resistor. A multi-outlet variable, flow, gas valve comprises a housing defining an inlet an outlet, and a passageway. The valve housing further defines at least two cylinder chambers communicating with the passageway. A piston is non-rotatably disposed inside each cylinder chamber and has a threaded opening through the …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.