Oil-less/oil free air brake compressors
CA 2455941 A1 · Owner: Dunaevsky, Val · Inventors: Gilbert, Gene; Mcmaster, Neil; Dunaevsky, Val
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reciprocating air brake compressor (10) includes a crank case housing a (12) crank shaft (14) and a piston assembly (20) operatively connected to the crank shaft via a connecting rod (22). The piston assembly includes a piston (26) moveable within a bore (24) of the crank case a piston ring (28) disposed on , a peripheral surface of the piston and a wrist pin (30) rotatably connecting the connecting rod to the piston. A means is provided for generating an air stream free of oil. In one embodiment, the means includes a channel extending through the crank shaft and connecting rod for delivering oil to the crank shaft and wrist pin bearings. The means further includes first and second …
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 August 1, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 1, 2024.
- 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.