Backrest height adjustment for office chair
CA 1180655 A · Owner: Simmons Universal Corporation · Inventors: Seeley, Wayne C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A housing is fixed on the backrest and supports the same for vertical sliding movement on the upper end portion of a vertical support member. Notches are spaced vertically along the upper portion of the support member and a pawl is pivotally supported on the housing and includes a ratchet finger movable between an operative position with the ratchet finger in engagement with the notches and an inoperative position with the ratchet finger out of engagement with the notches. A spring is associated with the pawl and is operable to selectively maintain the pawl and ratchet finger in either the operative or inoperative positions. When the backrest is raised to the …
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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
- Granted January 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2002.
- 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.