Injection type lubricating apparatus
CA 1059446 A · Owner: Master Pneumatic-Detroit · Inventors: Thrasher, George E. (Jr.)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Injection Type Lubricating Apparatus, Abstract Pump body has a cylindrical chamber within which a spool-shaped insert fits. The insert has a central cylindrical bore within which the injection plunger works and has an external annular groove communicating with the bore through a lubricant supply port having a diameter smaller than that of the bore. Lubricant is furnished to the bore through an opening in the pump body which communicates into the annular space defined by the insert groove. The fit between the plunger and bore is interrupted only through the arcuate extent of the diameter of the lubricant supply port.
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 July 31, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 31, 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.