Workholder for edge sharpener
CA 1105709 A · Owner: Longbrake, Howard R. · Inventors: Longbrake, Howard R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A traveling band edge sharpener for sharpening knives, arrowheads, and the like, having an endless abrasive belt looped about a pair of pulleys one of which is power driven, and a detachable workholder for positioning the work in optimum position relative to the belt for sharpening on the belt and/or a hand manipulating sharpening device in optimum position relative to the work for subsequent finish sharpening of the work by hand after removal of the workholder and work from the machine or during an entire sharpening operation.
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 July 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 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.