Drill steel guiding and centralizing mechanism
CA 1164446 A · Owner: Oy Tampella Ab · Inventors: Leppala, Matti
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A drill steel guiding and centralizing mechanism comprising a body and a first and a second jaw connected to other ends of two-armed angled levers. The angled levers are turnably connected to the body by joints at the corner points between the arms. The ends of the free arms of the angled levers are connected to each other by a connecting rod the, ends of which are connected to the ends of the arms by swivel joints. The second angled lever has an extension which is affected by the power mechanism substantially parallelly to the connecting rod. Thereby the jaws can be opened and closed by the power mechanism exactly centralized in relation to the drill steel.
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 March 27, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 2001.
- 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.