Guidance device for masts sliding one within the other telescopic arms and guidance method
CA 2608462 C · Owner: Van Acker, Alain · Inventors: Van Acker, Alain; David, Stephane
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device fixed to a first mast cooperating with a contact region on the outer face of a second mast (14) sliding essentially coaxially within the first mast. The device comprises guidance units with a roller (40) mounted such as to rotate about an axis (37) perpendicular to the axis of the masts a friction block (31) with a pressure face (29) means for displacement of the axis of the roller perpendicular to the contact region of the mast according to the force exerted on the mast by the friction block. The pressure zone of the unit on the mast is thus formed by just the roller or the roller and friction block.
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
- Filed May 17, 2006 and granted December 10, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.