Mineral cutter picks and pick assemblies
CA 1237451 A · Owner: Santrade Limited · Inventors: Stevens, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
MINERAL CUTTER PICKS AND PICK ASSEMBLIES" A mineral cutter pick (2) is mounted in holding means (6, 8) with passages (10, 12) in the pick and the holding means for supplying fluid to an opening near the pick cutting edge. Respective sealing sleeves (16 18), are provided in the adjacent ends of the passages in the pick and holding means and receive the opposite ends of a tubular connector (14). At least one of the sealing sleeves has its outer face exposed to the fluid supply pressure so that sealing with the associated end of the connector is assisted by the pressure force. The ends of the connector are formed as spherical enlargements (26 28) to allow free pivoting in their sleeves and at …
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 May 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
- 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.