System for maintaining the quality and level of lubricant in an engine
CA 2258435 A1 · Owner: Damm, Klaus-Werner · Inventors: Damm, Klaus-Werner; Garvin, Gary A.; Orloff, Gary L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for measuring the quality and level of lubricant in an engine lubricant, reservoir includes valve means for selectively directing a portion of lubricant from the engine, through a first conduit for return to the engine or through a second conduit for removal from, the engine. Within the first conduit are one or more sensors for sensing the condition of the, lubricant passing through the first conduit. The sensors are monitored by a controller which is, operative selectively to cause the valve means to block the flow of lubricant through the first, conduit and direct a portion of the lubricant through the second conduit based on the, monitored conditions of the lubricant. …
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 January 11, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 11, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 11, 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.