Chair with zero front rise control

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5540481
SERIAL NO

08236335

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A structural support shell for a tilt-back chair has a back portion, a seat portion, and a flexible compression zone extending between the back and seat portions in an integrally molded, one-piece unit. The chair has a base with a recline control pivoting recline control lever. The seat portion of the shell is fixed to the base and the back portion of the shell is fixed to the recline control lever. The flexible compression zone provides a simplified construction for an ergonomic chair design having an effective axis of rotation between the back portion and seat portion which is located above the seat portion, forward of the back portion, and generally adjacent to the hip joints of a seated user.

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First Claim

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Family

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Patent Owner(s)

  • STEELCASE DEVELOPMENT INC., A CORPORATION OF MICHIGAN

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Groendal, Dale M Jenison, MI 27 1170
Massey, James E Wayland, MI 6 270
Pugh, David C Howard City, MI 5 265
Roossien, Charles P Wyoming, MI 25 1859
Scheper, Robert M Grand Rapids, MI 31 1714
Smith, Douglas A Grand Rapids, MI 35 1137

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