Arrangement for the axial bearing of a drilling machine
CA 1297866 C · Owner: Salmi, Pekka · Inventors: Muuttonen, Timo; Salmi, Pekka; Kiikka, Timo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an arrangement for the axial bearing of a drilling machine. The drilling machine thereby comprises a body (6), a percussion device (1) fitted in the body, and a rotation bushing (3) functioning as a rotating means of a shank (2) positioned on an axial extension of the percussion device. Furthermore an axial bearing is fitted within the body (6) for receiving the axial forces exerted on the body (6) through the shank (2). In order to provide resilience the axial bearing is arranged to be displaceable in the axial direction under the influence of a pressure medium acting thereon. To resiliently receive a percussion impulse reflected from the rock during the drilling …
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 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- 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.