Safety parking brake for automatic transmissions
CA 1214117 A · Owner: Barr, William A. · Inventors: Barr, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sudden accidental unintended movement of an automatic transmission into reverse with the engine running is prevented by modifying the usual control rod to provide a cam surface so positioned thereon that as the control rod is moved a predetermined distance from reverse towards park a spring loaded member engages the cam surface and both restrains unintended movement of the control rod back to reverse and positively drives the control rod into its full park position as soon as the parking pawl aligns with a space between teeth of a parking gear. The invention may be assembled as original equipment in conventional transmissions or added to existing transmissions with little or no modification …
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 November 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 2003.
- 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.