Dual durometer twist-on connector
CA 2060447 A1 · Owner: Clifton, Richard B. · Inventors: Burton, Mark A.; Clifton, Richard B.; Paul, Gregg D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A twist-on or wire-nut electrical connector having a rigid, electrically insulative upper body a, flexible, elastic, electrically insulative lower skirt and a coil spring within the body for gripping wires which may be inserted therein. The provision of a flexible, elastic skirt allows the insertion of a larger number of wires (or larger sized wires) into the connector; the skirt further deforms to fit more easily within a crowded junction box or other high-density wiring environment. Unlike prior art twist-on connectors, the lower skirt is attached directly to the open end of the polymeric body, allowing greater application of torque to the rigid body. In the preferred embodiment, the …
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 January 31, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 31, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 2014.
- 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.