Scroll fluid machinery
CA 2287444 A1 · Owner: Kajiwara, Mikio · Inventors: Kajiwara, Mikio; Yoshimura, Keiji; Kuroiwa, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scroll fluid machinery, comprising a refrigerant delivery timing advancing means for setting a timing of delivery of refrigerant from a first compression chamber (4), which is one of a pair of compression chambers positioned on the innermost side of a plurality of compression chambers formed between first and second swirl bodies (1, 2), ahead of a timing of delivery of refrigerant from a second compression chamber (5), the refrigerant delivery timing advancing means including an extension part (1c) of the first swirl body (1) and an advanced opening part (3a) of a delivery port (3).
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 March 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 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.