Masonary drill tip with strong and chamfered cutting edges
CA 1324013 C · Owner: Vermont American Corporation · Inventors: Pennington, Donald C. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cutting tip to be carried by a drill bit for rotation in a first direction and useful in drilling holes in stone and masonry materials wherein the tip is planar and has a point defined by first and second surfaces intersecting at a point and third and fourth flank edges extending generally parallel to the longitudinal axis and where the leading edge of at least one of the flank edges. determined by the direction of rotation, is chamfered.
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 November 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 2010.
- 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.