Fluid cooled muller-reactor for battery paste
CA 1065844 A · Owner: National Engineering Company · Inventors: Howlett, Philip C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roller drill bit comprises a fixed bit member including a shaft journal and a hollow roller with cutting members thereon rotatably supported on the journal. A radial roller bearing unit supports a wide end of the roller and a bush supports the narrow end thereof. Two diamonds are mounted at the bottom of the bore of the roller and in an end surface of the journal and are arranged for sliding contact against one another. At least one of the diamonds has a spherical surface arranged to contact the other diamond.
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
- Granted November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 1996.
- 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.