Hammer drill bit chuck attachment
CA 2508038 C · Owner: Beauchamp, Fern · Inventors: Beauchamp, Fern
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hammer drill bit chuck attachment comprises a drive shaft for rotation by a drill. The drive shaft has a shank portion defining a longitudinal axis and an annular flange portion projecting radially outwardly from the shank portion for longitudinal and rotational movement therewith. The annular flange portion having a rearwardly facing toothed surface. A drill bit chuck is mountable on the drive shaft forwardly of the annular flange portion for rotation with the drive shaft. An actuator collar has a forwardly facing toothed surface and is mounted on the shank portion rearwardly of the annular flange portion for free rotation about the shank portion and for longitudinal sliding movement …
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 May 17, 2005 and granted December 17, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.