Work chair comprising a swivelling seat shell
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United States of America Patent
Stats
-
Aug 22, 1989
Grant Date -
N/A
app pub date -
Aug 22, 1988
filing date -
Aug 20, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A work or office chair having a seat shell which is pivotably arranged on a height-adjustable seat carrier, characterized by the seat shell being spring loaded to oppose tilting of the seat shell from a raised position towards a tilted, lower position. The chair includes a fixing arrangement for fixing the chair in specific tilted positions. One improvement is a spring arrangement for supporting the chair and a toggle arrangement coacting with the spring arrangement for opposing tilting of the chair with the springs of the toggle arrangement and the supporting spring coacting to require a substantial force to cause initial tilting then followed by a gradual force to cause tilting.
First Claim
Family
International Classification(s)
Cited Art Landscape
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