SWIVEL CHAIR
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jun 4, 2009
app pub date -
Nov 30, 2007
filing date -
Nov 30, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A swivel chair includes a seat unit and a base unit. The seat unit includes a downwardly extending post. The base unit includes: a base member; a sleeve member that extends upwardly from the base member, that surrounds the post of the seat unit, and that has a top end portion; a bearing that is disposed fixedly in the sleeve member and that is sleeved on the post so as to couple rotatably the post to the sleeve member; a first positioning ring that is fixed in the top end portion of the sleeve member, that surrounds the post, and that forms an annular clearance with the post; and a second positioning ring that is sleeved fixedly on the post, that extends into the first positioning ring, and that is rotatable relative to the first positioning ring.
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Cited Art Landscape
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