Hole saw plug ejector
CA 1293872 C · Owner: Parent, Philip Vernon · Inventors: Parent, Philip Vernon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hole Saw Plug Ejector, Abstract, Cylindrical type hole saws as known, necessarily allow for the cut out hole plug to enter the cylinder as it is being cut and remain there when the hole saw is withdrawn from the workpiece. Generally this plug becomes bound within the cylinder. In order to remove this plug, a screwdriver blade or similar slim object is inserted into one of the several slots provided in the periphery of the saw blade. The screwdriver is then canted, thereby forcing the plug outward. The present invention Provides for the removal of the cutout plug without disconnecting the drill motor and makes the removal faster, safer, and easier than is presently known. Other reference …
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 January 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 2009.
- 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.