Plastic encapsulated nut and washer assembly
CA 2004247 C · Owner: Maclean, Barry L. · Inventors: Maclean, Barry L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A plastic encapsulated nut and washer assembly includes a plastic retainer or body for holding a hex nut and washer in axially aligned abutting relation ready for assembly with an external threaded member. A portion of the plastic retainer provides an annular seal around the washer when the nut is tightened on a threaded member and an extension bore is formed in the plastic material for providing a lock-nut function when the threaded member is extended into the extension bore from the threaded bore of the hex nut.
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 November 30, 1989 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 30, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2011.
- 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.