Scroll type compressor in which a soft starting mechanism is improved with a simple structure
CA 2282031 C · Owner: Terauchi, Kiyoshi · Inventors: Kawano, Akirhiro; Terauchi, Kiyoshi; Higashiyama, Akiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a scroll type compressor in which a compression mechanism compresses a gaseous fluid with moving the gaseous fluid along a spiral path to produce a compressed gas an escaping path is provided for escaping the compressed gas from the compression mechanism at an intermediate portion of the spiral path. A pressure transmission path transmits pressure of the compressed gas to a valve mechanism which is for controlling an open and an close of the escaping path. The pressure transmission path has a delay mechanism for delaying transmission of a change of the pressure to the valve mechanism.
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 September 10, 1999 and granted August 27, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2021.
- 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.