Telescopic support arm
CA 2060824 C · Owner: Yagi, Katumi · Inventors: Yagi, Katumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A telescopic support arm includes an outside arm and an inside arm which are designed to slide freely each other the outside arm having a slot and an abutting piece inside thereof, and the inside arm having a slot and rotatable stopping piece inside thereof. The stopping piece is rotated by the engagement with the end portions of the slots and the abutting piece so as to be projected out of or sink into the slots, and by its rotation the outside arm and the inside arm are free to slide each other in both the extending and contracting directions. The stopping piece is provided with a buffer mechanism which comprises a holding piece of the stopping piece , a spring for pulling the holding …
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 February 7, 1992 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2014.
- 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.