Height adjustment for chair backs
CA 2118076 C · Owner: Sifa Sitzfabrik Gmbh · Inventors: Neumueller, Konrad
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chair back has a back rest mounted upon a fastening member which is held in a desired vertical position upon a back rest carrier by a locking device. In the locking device an anchoring plate has shoulders bearing rearwardly upon the front of the fastening member, back rest carrier and a resilient clamp resistant device, the anchoring plate being provided at its rear end with an operating lever pivoted to the plate. Movement of the lever into a locking position brings pressure to bear upon the resilient device thereby compressing springs while clamping the fastening member to the carrier. The resilience applying member is located functionally between the resilient device and the lever to …
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 October 13, 1994 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2016.
- 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.