US 7,887,131 B2 · Lumbar support

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.

Claims10

Dependent claims

A lumbar support for a chair backrest comprising:

a front pad and a rear frame;
said front pad and rear frame positionable on opposite sides of said backrest, and
magnetic members, at least one of the magnetic members provided on a back of said front pad and at least one of the magnetic members provided on a front of said rear frame;
said front pad and rear frame maintainable in position relative to each other on said opposite sides of said backrest via attractive forces between said magnetic members;
said lumbar support movable relative to said backrest as said magnetic members maintain said front pad and rear frame in position relative to each other such that said lumbar support is positionable at a desired location on said backrest;
and
said backrest formed from a material which enables said magnetic members to maintain said front pad and rear frame in position relative to each other on opposite sides of said material during movement of said lumbar support.

4 more elements

Dependencies are inferred from the claim text.

Lumbar support

Life of this patent

Lumbar support

Life of this patent

Abstract

Claims10