Boring devices
CA 1188678 A · Owner: Suied, Joseph P. · Inventors: Suied, Joseph P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The improvement in the boring devices is adapted to cut grooves or cavities at the bottom of bored holes. It comprises a tool (3) containing a diaphragm (17) forming an expansion chamber to which a liquid under pressure can be supplied for radially displacing cutting elements (24) set with diamonds between a retracted position and a projecting working position. The measurement of the variation of the volume of the liquid under pressure in a chamber (26) enables the radial position of the elements (24) to be known.
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 June 11, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2002.
- 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.