US 7,891,633 B2Granted

Adjustable rotation base

OwnerWanda Ying Liinventor

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Abstract

An adjustable rotation base includes a base housing and a transportation arrangement. The base housing has a bottom side, an upper side for coupling with the supporting post to support the outer umbrella in an upright manner, and a receiving cavity indently formed on the bottom side of the base housing, wherein the base housing includes a stationary unit provided at the bottom side for sitting on the ground surface in a stationary manner, and a plurality of transferring wheels rotatably supported at the bottom side of the base housing. The transportation arrangement is provided at the base housing to operate the base housing between an idle mode and a transportation mode in which the stationary unit is upwardly lifted to allow the transferring wheels being sitting on the ground surface, such that the base housing is adapted to be transported on the ground surface via the transferring wheels.

Claims20

Dependent claims

An outdoor umbrella, comprising:

a frame;
a supporting shaft supporting said frame, wherein said supporting shaft comprises a rotatable shaft body having a hollow structure to define a shaft cavity therein;
and
an adjustable rotation base, which comprises:
a base housing arranged to couple with said supporting shaft to support said frame in an upright manner;
and
a rotation arrangement, which comprises:
a base shaft upwardly extended from said base housing, and is arranged to be received in said shaft cavity of said rotatable shaft body;
an engaging head received in said shaft cavity of said rotatable shaft body, and comprises a plurality of first engaging teeth formed on said base shaft, and a plurality of second engaging teeth formed on a sidewall of said shaft cavity of said rotatable shaft body for engaging with said first engaging teeth;
and
an actuation unit extended from said engaging head in such a manner that when said actuation unit is actuated, said second engaging teeth is adjustably driven to rotate with respective to said first engaging teeth, so as to impart a controlled relative rotational movement between said rotatable shaft body and said base shaft for allowing said supporting shaft to rotate with respective to said adjustable rotation base.

8 more elements

An adjustable rotation base for an outdoor umbrella comprising a frame, a supporting shaft supporting said frame, wherein said supporting shaft comprises a rotatable shaft body having a hollow structure to define a shaft cavity therein, wherein said adjustable rotation base comprises:

a base housing arranged to couple with said supporting shaft to support said frame in an upright manner;
and
a rotation arrangement, which comprises:
a base shaft upwardly extended from said base housing, and is arranged to be received in said shaft cavity of said rotatable shaft body;
an engaging head received in said shaft cavity of said rotatable shaft body, and comprises a plurality of first engaging teeth formed on said base shaft, and a plurality of second engaging teeth formed on a sidewall of said shaft cavity of said rotatable shaft body for engaging with said first engaging teeth;
and
an actuation unit extended from said engaging head in such a manner that when said actuation unit is actuated, said second engaging teeth is adjustably driven to rotate with respective to said first engaging teeth, so as to impart a controlled relative rotational movement between said rotatable shaft body and said base shaft for allowing said supporting shaft to rotate with respective to said adjustable rotation base.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/590,942Filed 16 Nov 2009 · continuation in part
Priority: 29 May 2007
Published: US 2010/0065709 A118 Mar 2010
Granted: 22 Feb 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

E04H 12/2238
Sockets or holders for poles or posts: to be placed on the ground
A45B 11/00
Umbrellas characterised by their shape or attachment
A45B 2025/003
Details of umbrellas: accessories not covered by groups A45B25/24 - A45B25/30
E04H
Buildings or like structures for particular purposes

Family

Application11/807,661Parent of this continuation-in-part · filed 29 May 2007
Application12/069,759Parent of this continuation-in-part · filed 12 Feb 2008
US 2010/0065709 A1Pre-grant publication · published 18 Mar 2010
US 7,641,165 B2Parent of this continuation-in-part
US 7,513,479 B2Parent of this continuation-in-part
US 2008/0296463 A1Published application
US 2008/0296464 A1Published application
US 7,891,633 B2This patent

From the US filing history. Foreign family members aren’t listed.