Electrical connector for hand tools
CA 2093213 A1 · Owner: Bruns, Joachim · Inventors: Bruns, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For the attachment of a battery pack to a power hand tool a, plug-type connection is suggested which comprises of a circular insertion part (18) on the battery casing (16) and a corresponding locating arrangement (3) on the power hand tool. Both parts have concentric power contacts (8 9, 26, 27) and locking, means (13,.19) which when the casing (16) is axially inserted engage automatically. By a short twist the locking means (13, 19) can be released and the battery casing (16) can be removed for recharging. (Figures 1 and 3)
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 September 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 21, 2013.
- 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.