Prevailing torque nut
CA 2199205 C · Owner: Illinois Tool Works Inc. · Inventors: Dziaba, Roman J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An article engagable and retainable about a threaded shaft which in one, embodiment is a self locking nut a first end an opposing second end, and a threaded bore with an axial dimension for receiving the threaded shaft. A plurality of resilient posts extend along the body member and are inclined inwardly toward the bore axis to provide a prevailing torque on a threaded shaft disposed in the threaded bore. A pair of resilient arms with end portions extend from each resilient post. Each resilient arms is inclined toward the second end of the body member to provide a prevailing torque on the threaded shaft disposed in the threaded bore. The resilient posts and resilient arms contribute to …
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
- Filed March 5, 1997 and granted February 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2019.
- 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.