Grinding fixture
CA 1090138 A · Owner: Fagersta Aktiebolag · Inventors: Karlsson, Osten
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A grinding fixture for grinding the buttons in rock drilling button bits comprising a means in which the bit is intended to be anchored during grinding a horizontally arranged, disk rotatably driven about a vertical axis through the center of the disk on which the means rests, and an arm extending over the disk for centering a button which is to be ground so that the button will be concentric with the rotational axis of the disk, the arm being arranged displaceable along and, swingable about a vertical column and a cup-shaped recess at, the end of the arm the shape of the recess substantially corresponding to the shape of the button.
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 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 1997.
- 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.