Compressor control module
CA 2432848 C · Owner: Cross, Brian Douglas · Inventors: Reese, Carl Richard; Curry, John Michael; Vanderhoof, Troy Inslee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compressor control module for use with a pressurization system having a strain gauge transducer and a compressor. The compressor control module includes variable voltage references associated with low and high pressure limits comparator circuits configured to compare the voltage from the strain gauge pressure transducer to the variable voltage references a control logic circuit configured to logically combine signals from the comparator circuits and a relay circuit configured to apply power to the compressor.
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
- Filed June 19, 2003 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2025.
- 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.