Quick-release mechanism for screwdriver bits and the like
CA 2315923 E · Owner: Hasan, Maz A. · Inventors: Hasan, Maz A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A holder for holding a tool, having an elongated housing including a , longitudinal hole , having a cross-section corresponding to the cross-section of a mounting portion of the , tool bit. The housing further has at least one radial hole running from an outside surface , of the connector to the longitudinal hole. The radial hole contains a substantially , spherical locking means movably arranged in the radial hole. The means cooperates , with a circumferential groove in the tool bit to lock the tool bit in place when the tool bit , is fully inserted into the holder. A sleeve is arranged to reciprocally slide over the first , connector between two end positions. The sleeve is biased …
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 August 14, 2000 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2022.
- 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.