Engine crankshaft
CA 1312722 C · Owner: Ford Motor Company Of Canada Limited · Inventors: Mascarenas, Paul A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
8-, Abstract, The invention relates to a method of manufacturing a crankshaft 10 which comprises casting in place a hollow steel tube 18 into the crankshaft 10 and laser piercing bores 32 in at least the crank pins of the crankshaft to connect with the interior of the steel tube 18. Laser piercing avoids the risk of blockage of the oil duct by the burrs which would result from conventional drilling. 2214L
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 January 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2010.
- 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.