Locking device for threaded fastener
CA 1320364 C · Owner: Mckinlay, Alistair N. · Inventors: Mckinlay, Alistair N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fastener assembly comprising a nut and a locking washer. The washer is mounted on a skirt carried by the nut so that the washer cannot be separated from the nut. The nut and the washer having facing cam surfaces formed in such a manner that as the nut is tightened on a workpiece, the nut engages the washer to rotate same. Vibrations tending to loosen the washer cause the cam surfaces to wedge the washer between the nut and the workpiece to thereby tighten the assembly. Both the nut and the washer have a hexagonal configuration so that they can be engaged together by a wrench for loosening same.
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 July 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 20, 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.