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US Patent 7887131 Lumbar support

Patent 7887131 was granted and assigned to Knoll (company) on February, 2011 by the United States Patent and Trademark Office.

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Patent
Patent

Patent attributes

Current Assignee
Knoll (company)
Knoll (company)
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7887131
Date of Patent
February 15, 2011
Patent Application Number
12705197
Date Filed
February 12, 2010
Patent Citations Received
‌
US Patent D1038611 Bag
0
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US Patent D1028549 Portable chair
0
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US Patent 12004660 Compliant backrest
0
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US Patent D1030340 Portable chair
0
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US Patent 11744370 Portable chair
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US Patent 11786039 Body support assembly and methods for the use and assembly thereof
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US Patent 11910934 Body support assembly and methods for the use and assembly thereof
0
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US Patent 11944208 Chair and method of making the chair
0
...
Patent Primary Examiner
‌
David Dunn
Patent abstract

A chair having a seat rotatably attached to a tilt spring portion of a tilt mechanism such that the tilt spring is activated by movement of the seat. A backrest and/or the seat can be rotatably connected to the tilt mechanism by parallel arm arrangements which permit the seat and backrest to tilt relative to each other. A tilt limiter can have a magnetic member which facilitates full movement of the tilt limiter between free and locked positions, and which creates an audible indication of full movement of the tilt limiter. The seat/backrest can be made from a flexible mesh material secured to a rigid overmolding which surrounds and is attached to an inner frame of the seat/backrest wherein an outer surface of the overmolding forms an outer surface of the seat/backrest frame and attachment of the overmolding causes the inner frame to stretch the mesh to a final condition.

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