Method for making insert for rebuilding valve guides
CA 1106159 A · Owner: K-Line Industries, Inc. · Inventors: Kammeraad, James A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The specification discloses a method for manufacturing an insert for lining and/or relining valve guides for reciprocating-type poppet valves in cylinder heads of internal combustion engines. The method includes separately forming the inner and outer sleeves or tubes, and inserting one within the other for frictionally holding them together. The combined sleeves provide the insert with high wear resistance and lubricity and excellent heat transfer properties. Separate formation and later assembly allows precise control of wall thicknesses diameters and con-, centricities.
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 August 4, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 1998.
- 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.