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Chair with recline control mechanism, recline limit control and back tilt mechanism

a control mechanism and control mechanism technology, applied in the direction of chairs, movable seats, transportation and packaging, etc., can solve the problems of unreliable use, high cost, and complex structure of adjustable office chairs, and achieve the effects of improving the service life, reducing the cost of use, and improving the service li

Inactive Publication Date: 2006-12-21
HNI TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] The difficulties encountered with previous devices have been over come by the present invention. What is described here is a chair with a reclining back including a seat assembly, a back assembly, a pivot forming structure defining an axis of rotation for allowing the back assembly to rotate relative to the seat assembly and a biasing structure for resisting the rotation of the back assembly, the biasing structure being spaced from the axis of rotation and also being movable forwardly and rearwardly relative to the axis of rotation with specific structural elements as a way of controlling resistance to the rotation of the back assembly. The invention here also includes a limit co

Problems solved by technology

Adjustable office chairs are sometimes complicated to operate or are overly complex in structure and are often expensive, unreliable or difficult to use.

Method used

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  • Chair with recline control mechanism, recline limit control and back tilt mechanism
  • Chair with recline control mechanism, recline limit control and back tilt mechanism
  • Chair with recline control mechanism, recline limit control and back tilt mechanism

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Embodiment Construction

[0044] While the present invention is open to various modifications and alternative constructions, the preferred embodiment illustrating the best mode contemplated by the inventors of carrying out their invention is shown in the various figures of the drawing and will be described herein in detail, pursuant to Title 35 U.S.C. section 112 (first paragraph). It is understood, however, that there is no intention to limit the invention to the particular embodiment, form or example which is disclosed herein. To the contrary, the intention is to cover all modifications, equivalent structures and methods, and alternative constructions falling within the spirit and scope of the invention as expressed in the appended Claims section attached hereto, pursuant to Title 35 U.S.C. section 112 (second paragraph).

[0045] Referring now to FIGS. 1-3, there is illustrated a chair 10 having a back assembly 12, a seat assembly 14, a set of controls 16, a pair of arms 18, 20, a support column 22, a base ...

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PUM

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Abstract

A chair having a recline control mechanism, a limit control apparatus and a tilt mechanism. The recline control mechanism operates to adjust resistance to rotation of a back assembly of the chair and includes an actuator lever having a lock structure attached to a movable spring assembly. Moving the spring assembly toward and away from a rotation axis for the back assembly adjusts the resistance. The limit control apparatus selectively limits the extent of rotation of the back assembly from about zero degrees to about 3.5 degrees to about seven degrees by using abutment surfaces. The tilt mechanism provides an independent and stable yet passive tilt capability to a backrest of the back assembly by using a pair of brackets, two pairs of links and two pairs of rods.

Description

BACKGROUND OF THE INVENTION CROSS REFERENCE TO RELATED APPLICATIONS [0001] Not applicable. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0002] Not applicable. [0003] 1. Field of the Invention [0004] The present invention relates to a chair with a reclining back assembly and, more particularly, to a chair that includes a more efficient mechanism for adjusting resistance to the recline of a chair back assembly, a simple apparatus for limiting the angle of recline and a tilt mechanism that results in a more comfortable passive tilt adjustment of a chair back in various chair recline positions. [0005] 2. Description of the Related Art [0006] Reclinable office chairs are ubiquitous and appear in many different styles and designs and with many different functions. Most, if not all, include some mechanism to resist a reclining back. See for example, U.S. Pat. No. 6,053,574 which includes movable springs. Some chairs also include adjustable stops to control the angle of recline. See for...

Claims

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Application Information

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IPC IPC(8): A47C1/024
CPCA47C7/44A47C1/03238A47C1/026A47C7/443
Inventor MACHAEL, JAY R.KOEPKE, MARCUS C.KOCH, JOHNICKES, AARON MICHAEL
Owner HNI TECH INC