Fluid operated wall groove cutter
CA 1099917 A · Owner: Macdonald (John) & Company (Pneumatic Tools) Limited · Inventors: Allan, David T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid operated groove cutter especially but, not exclusively, for cutting grooves in concrete structures and comprising a carriage having wheels thereon adapted to run on a concrete structure, a fluid operated percussion hammer mounted on the carriage and including means for adjusting the depth of stroke of the hammer relative to said wheels.
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
- Granted April 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 1998.
- 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.