Cartridge filters with fixed valve detent
CA 2270488 A1 · Owner: Roll, Mark A. · Inventors: Roll, Mark A.; Dubowicz, Louis M.; Lasky, William Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel filter element which includes an annular filter media having sealed end faces covered by end plates has a cylindrical valve operating detest which is a discrete, component from the rest of the fuel filter structure. The cylindrical detest is mounted, within the hollow core of the annular filter media by a radially extending mounting. support which does not extend substantially beyond the hollow core of the filter element. In a first embodiment, the radial mounting support is a metal member which supports a, plastic cylindrical detest. In a second embodiment the cylindrical detent is , unitary with the radially extending mounting support both being molded of plastic. In a , third …
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 April 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 28, 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.