Engine camshaft drive mechanism
CA 1249753 A · Owner: Ford Motor Company Of Canada, Limited · Inventors: Ma, Thomas T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a drive mechanism for achieving variable valve timing in an internal combustion engine. A drive crank 67 is coupled to a driven crank 72 by a slotted disc 63 rotatably mounted in a yoke 66 and movable between on-axis and offset position relative to a common axis of rotation of the two cranks. To control the position of the yoke 66 a force is applied to the yoke to urge the disc away from the on-axis position the direction of the force being such that the reaction force on the yoke, resulting from the rotation of the slotted disc in an offset position, acts to move the yoke 66 and the disc 63 into the on-axis position as the rotational speed of the disc increases.
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 February 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 7, 2006.
- 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.