Scroll apparatus with pressure regulation
CA 1311730 C · Owner: American Standard Inc. · Inventors: Riffe, Delmar R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PATENT, Title, SCROLL APPARATUS WITH PRESSURE REGULATION Inventor, Delmar R. Riffe, Abstract, In a scroll compression apparatus having an orbiting scroll, a frame with a pressure regulation chamber adjacent the orbiting scroll wherein the frame includes a spring biased annular seal and a pressure responsive device in a discharge aperture through the frame for maintaining constant pressure in the pressure regulation chamber. Preferably the frame includes, an annular groove of rectangular cross-section accommodating a relatively smaller annular seal also of rectangular crosssection. An annular seal spring having a first planar surface and a second planar surface is disposed in the annular …
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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 December 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 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.