Tilt control mechanism for a chair
CA 2848646 C · Owner: Haworth, Inc. · Inventors: Guntur, Naveen; Roslund, Richard N.; Rutman, Matthew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tilt control mechanism (18) for an office chair (10) includes a spring assembly (56) therein which controls the tilt tension on the back assembly (24) . The tilt control mechanism (18) includes a control plate (81) mounted to the control shaft (53) on which the uprights (20) are mounted wherein the control plate (81) rotates in combination with the uprights (20) . This control plate (81) is located within the control body (19) and cooperates with a front stop assembly (85) and a back stop assembly (86) to vary the limits of forward and rearward tilting of the seat and back assemblies (30,24) . Also the tilt control mechanism (18) includes a pneumatic actuator assembly (63) having fixed …
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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
- Filed March 1, 2006 and granted May 10, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 1, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.