Method of producing elastomeric stators for eccentric spiral pumps
CA 2255376 A1 · Owner: Jager, Sebastian · Inventors: Jager, Sebastian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method of producing an elastomeric stator and a stator, produced by such method are provided. On its outside the stator, has a metallic spiral body the shape of which corresponds to that of a hollow pump chamber. Elastomeric material is injected into a mold that contains the spiral body in order to form an elastomeric lining of the body. The elastomeric materials are introduced into the mold in such a way that the outer surface of the elastomeric lining merely rests against the spiral body and is not bonded or otherwise fixedly connected thereto.
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 December 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2020.
- 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.