Static pressure control in variable air volume delivery systems
CA 1296941 C · Owner: Wright, Edward F. Jr. · Inventors: Wright, Edward F. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for supplying variable amounts of air to an air volume delivery system (130) including supply ductwork (210) to air terminals (220), with a multi-speed motor (180) subject to direction by controller (200) to produce variable time rates of air volume passing into said ductwork (210) in response to static pressure (as measured by detector (310)) exceeding predetermined limits.
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 March 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 2009.
- 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.