Pawl and ratchet assembly
CA 2202159 C · Owner: La-Z-Boy Chair Company · Inventors: Komorowski, Karl J.; Marshall, Richard E.; Saul, Jonathan R..
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved latching mechanism for a rocking-type chair (10) selectively permits or inhibits rocking motion of the chair frame relative to the base upon actuation. The improved latching mechanism includes a pawl and ratchet assembly (22) having a spring-biased pawl member (92) coupled to the chair base (14) which is operable to lockingly engage a tooth ratchet sector (82) disposed on the chair frame (12) for positioning the chair frame (12) in rearwardly tilted positions and a release mechanism (120) including a rigid release link (122) that pulls the spring-biased pawl member (92) towards a released position by an actuation member (140). The actuation member (140) includes a swing …
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 12, 1995 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 12, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 2017.
- 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.