Heat-insulating piston structure
CA 1330643 C · Owner: Kawamura, Hideo · Inventors: Matsuoka, Hiroshi; Kawamura, Hideo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The heat-insulating piston structure according to the present invention is formed by fixing a piston head, which consists of a material the coefficient of thermal expansion of which is substantially equal to that of a ceramic material to a piston skirt, and setting a thin, flat plate portion of a ceramic material on the whole of the flat surface of the piston head which is on the side of a combustion chamber via a heat-insulating member. Accordingly, the piston can be formed so that it has excellent heat-insulating characteristics and high thermal resistance, deformation resistance and corrosion resistance. Especially the thin plate portion of a ceramic material which, is exposed to a …
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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 12, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 12, 2011.
- 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.