Motor-compressor with means to reduce noise
CA 2021084 A1 · Owner: Gordon, James F. · Inventors: Gordon, James F.; Scheldorf, Owen H.; Scheldorf, Gary O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Gordon, et al, MOTOR-COMPRESSOR WITH MEANS TO REDUCE NOISE ABSTRACT, A hermetically sealed compressor unit includes a hermetically sealed casing having a side wall with a cylindrical inner surface; an electric motor is positioned within the casing and includes a stator with a cylindrical outer wall having an interfering fit with the casing side wall inner surface; a rotary compressor unit driven by the motor includes a cylinder spaced from the motor and having a cylindrical outer wall welded to the casing side wall at selected positions; and at least one stiffening ring positioned adjacent the cylinder and having a cylindrical outer wall of a larger diameter than said cylinder outer wall …
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 July 12, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 2012.
- 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.