Spring shield for starter drives for internal combustion engines
CA 1289384 C · Owner: Parkhurst, Charles I. · Inventors: Parkhurst, Charles I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A small metal shield is disclosed which lengthens the life of the rectangular springs in starter drives for internal combustion engines. The shield has a rectangular face which slightly overlaps the edges of the spring and a projection which seats the shield in the spring between the end of the spring and the cylindrical roller. The projection may be perpendicular to the face or at a slight angle from the perpendicular.
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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- 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.