High pressure feed pump
CA 2238916 A1 · Owner: Spinnler, Fritz · Inventors: Spinnler, Fritz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The high pressure feed pump (14) has a plunger cylinder (26) and a cylindrical plunger piston (28) moved back and forth therein. The plunger cylinder (26) and the plunger piston (28) delimit a feed space (24) which, in the case of a filling stroke (F) of the plunger piston (28) can, be connected via a filling valve (24) to a supply space for a feed medium. Furthermore in the, case of a feed stroke (F') of the plunger piston (28) the feed space (24) can be connected via a delivery valve (42) to a high pressure space. The plunger cylinder (26) is of essentially rotationally symmetric design and is surrounded with a press fit by a pressure body (44). The external prestress exerted by the …
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 May 28, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 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.