Frame assembly for a chair
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United States of America Patent
Stats
-
Jul 12, 1988
Grant Date -
N/A
app pub date -
May 11, 1987
filing date -
May 11, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A frame assembly for a chair includes a base member, a seat support member and a backrest member. The front end of the seat support member is pivotally mounted on the front end of the base member a seat suspension spring is provided for the purposes of urging the seat support member to its elevated position. The seat suspension spring is mounted at a point spaced a substantial distance from the pivotal connection between the base and the seat support. Preferably, the suspension spring is a compression spring mounted rearwardly of and extending longitudinally of the backrest member so as to enjoy a substantial mechanical advantage.
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Family
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Cited Art Landscape
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