Dual conductor wristband
CA 2021287 C · Owner: Weiss, John W. · Inventors: Weiss, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dual conductor wristband utilizing a two-wire tether having a modified phono-type plug. The wristband includes a strap and a connector case the case, raving a female jack for receiving the dual connector plug. The plug diameter is smaller than conventional plugs, and the diameter of the pilot hole for the plug tip is correspondingly smaller to prevent accidental connection to a non-grounding tether. Two alternative embodiments are presented for coupling the dual connector plug to two electrically isolated backplates on the connector case. each backplate is connected to one of the two conductive pathways on the strap.
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 July 16, 1990 and granted October 17, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2012.
- 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.