Hub construction for a rotatable chair

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10080439
APP PUB NO 20170318967A1
SERIAL NO

15585240

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Importance

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Abstract

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The invention relates to a hub construction for a rotatable chair, which automatically returns to the initial position when the chair is relieved. In a prior art hub the return force was counteracted mainly by the friction in the hub bearing, which, regardless thereof that the hub was loaded, was not always sufficient for the hub to maintain its rotational position, for example, when the sitting person lifted his feet off the floor. For obtaining higher friction when the hub is loaded, it has been provided with a brake. The brake can preferably be a pair of spring discs which are compressed when the hub is loaded, whereby the brake disc makes contact with the brake surface.

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First Claim

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Patent Owner(s)

  • AF SOLUTIONS AB OY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kjellman, Fredrik Jakobstad, FI 6 21

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