Battery jar and method of making same
CA 1077132 A · Owner: Hardigg, James S. · Inventors: Hardigg, James S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An elongated battery jar is made in sections by a process of injection molding with the sections being joined together by a heat-welding or friction-welding process. By forming the battery jar in sections variations in thickness of the walls of the battery jar are substantially reduced since molding drafts normally present in elongated battery jars formed by an injection molding process are substantially eliminated.
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 May 6, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 6, 1997.
- 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.