Reclining Chair

Inactive Publication Date: 2012-04-26
HUMANSCALE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]In an embodiment of the invention, the recline mechanism can also feature a means for preventing the spring elastomeric assembly from extending beyond its maximum torsional range during recline. The coupler can comprise an inwardly-protruding recline stop spaced apart from the inwardly protruding prelo

Problems solved by technology

However, steel springs have low natural damping, making the springs prone to suffer from unwanted oscillation and vibration.

Method used

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  • Reclining Chair
  • Reclining Chair
  • Reclining Chair

Examples

Experimental program
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Effect test

Embodiment Construction

[0018]Referring to FIGS. 1-4, the reclinable chair 1 comprises a recline mechanism 300 pivotally attaching a backrest 200 to a support assembly 100. The support assembly 100 can comprise a seat 150 mounted to a base 110. The seat can comprise a seat cushion 151 attached to a seat shell 152. The recline mechanism 300 comprises a coupler 320 coupled to an elastomeric spring assembly 330.

[0019]The backrest 200 is attached to the support assembly 100 by mounting the coupler 320 to the elastomeric spring assembly 330 and then securing the coupler 320 to the seat 150 and / or the base 110. The coupler 320 can comprise an arm 321 attached to a cup 322. The distal side of the cup 322 is mated to the spring assembly 330 as described in further detail below. The proximal side of the cup 322 is secured to the seat 150 via one or more screws inserted through the cup's one or more holes 329. The coupler 320 is secured to the base 110 by sliding the coupler's arm 321 inside the end of the base 110....

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Abstract

In the specification and drawings a reclinable chair is described and shown having a recline mechanism pivotally attaching a backrest to a support assembly. The recline mechanism comprises a coupler operatively connected to an elastomeric spring assembly. The elastomeric spring assembly has four elastomeric inserts positioned between a polygon-shaped core and a polygon-shaped exterior housing. The exterior housing is fixed to the backrest, while the core is fixed to the coupler. The exterior housing has an outwardly protruding tooth positioned between the coupler's inwardly protruding preload stop and the coupler's inwardly protruding recline stop such that the primary tooth engages the preload stop when the chair is in a rested state and engages the recline stop when the chair is in a fully reclined state.

Description

I. BACKGROUND OF THE INVENTION[0001]In order to increase the comfort of a person seated in a chair, manufacturers have long made chairs with a backrest that is capable of reclining several degrees with respect to a vertical position. Today, seats with a reclining backrest are used in homes, offices, and vehicles. A common feature of reclinable chairs is a spring mechanism to bias the chair components toward an upright position. These mechanisms typically include a spring capable of returning the chair to the upright position when the rearwards thrust applied by the user ceases. The spring force stored during recline serves to assist the user when returning to an upright position.[0002]Traditionally, the spring mechanisms used in reclinable chairs have featured steel springs. However, steel springs have low natural damping, making the springs prone to suffer from unwanted oscillation and vibration. Steel springs are also succeptible to corrosion and damage due to shock loads. Elastom...

Claims

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Application Information

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IPC IPC(8): A47C1/025
CPCA47C1/025A47C7/448
InventorCARTIS, EMILIAN DANMCKENNA, MARK
OwnerHUMANSCALE CORP