Chair control
CA 2201253 C · Owner: Nightingale Corp. · Inventors: Breen, William R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chair control is shown for adjusting the horizontal position of a chair armrest or a chair back. A support bar upon which the chair armrest or back is mounted a slidably, located in a mounting bracket usually attached to the underside of the chair seat. The mounting bracket includes a first pivot pin spaced transversely of the support bar and a rigid lever mounted on this pivot pin the pivot pin, acting as a fulcrum. The rigid lever includes a first end portion that pivots into locking engagement with the support bar and a second remote end portion. An over-the-centre toggle linkage is coupled to the lever second end portion to rotate the lever about the pivot pin to engage the support …
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 March 27, 1997 and granted August 28, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2019.
- 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.