U.S. patent application number 11/766115 was filed with the patent office on 2008-12-25 for chair capable of being firmly stacked.
Invention is credited to Koh-Tuang Hock.
Application Number | 20080315645 11/766115 |
Document ID | / |
Family ID | 40135747 |
Filed Date | 2008-12-25 |
United States Patent
Application |
20080315645 |
Kind Code |
A1 |
Hock; Koh-Tuang |
December 25, 2008 |
Chair capable of being firmly stacked
Abstract
A chair capable of being firmly stacked comprises a seat; at
least one supporting leg being connected to a bottom of the seat,
the supporting leg including a resisting section and a wheel
assembly; one end of the resisting section being connected to a
bottom of the seat and another end of the resisting section being
connected to the wheel assembly; the wheel assembly including a
connecting block and a wheel pivoted to the connecting block; one
inner side of the connecting block being formed with a resisting
groove; the wheel being installed at an outer side of the
supporting leg and being rotatable with respect to the connecting
block; the resisting groove having a shape corresponding to a
periphery of the resisting section so that the resisting groove can
receive the resisting section of another chair.
Inventors: |
Hock; Koh-Tuang; (Taichung
City, TW) |
Correspondence
Address: |
Koh-Tuang Hock
235 Chung-Ho, Box 8-24
Taipei
TW
|
Family ID: |
40135747 |
Appl. No.: |
11/766115 |
Filed: |
June 21, 2007 |
Current U.S.
Class: |
297/239 |
Current CPC
Class: |
A47C 3/04 20130101; A47C
7/006 20130101 |
Class at
Publication: |
297/239 |
International
Class: |
A47C 3/04 20060101
A47C003/04 |
Claims
1. A chair capable of being firmly stacked, comprising: a seat; at
least one supporting leg connected to a bottom of the seat, the
supporting leg including a resisting section and a wheel assembly;
one end of the resisting section being connected to a bottom of the
seat and another end of the resisting section being connected to
the wheel assembly; the wheel assembly including a connecting block
and a wheel pivoted to the connecting block; one inner side of the
connecting block being formed with a resisting groove; the wheel
being installed at an outer side of the supporting leg and is
rotatable with respect to the connecting block; the resisting
groove having a shape corresponding to a periphery of the resisting
section so that the resisting groove can receive the resisting
section of another chair, wherein in stacking, the seat of one
chair is placed above the seat of another chair, while the
resisting sections of the chair at the upper side resist against
the resisting sections of the chair at the lower side.
2. The chair capable of being firmly stacked as claimed in claim 1,
wherein each resisting section is inclined to a bottom of the
seat.
3. The chair capable of being firmly stacked as claimed in claim 1,
wherein the wheel is pivoted to the connecting block and the chair
is shifted with the rotation of the wheel.
4. The chair capable of being firmly stacked as claimed in claim 1,
wherein a back portion is connected to the seat; each of two sides
of the chair has a handle connected between the back portion and
the seat.
4. The chair capable of being firmly stacked as claimed in claim 1,
wherein there are four supporting legs.
5. The chair capable of being firmly stacked as claimed in claim 1,
wherein the seat has a recessed central portion.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to chairs, and particularly to
a chair capable of being firmly stacked, wherein the stacking of
the chairs is firm and steady with less space. Furthermore, since
the wheel is at an outer side of the supporting leg, the wheel will
suspended from a resisting section without contacting the resisting
section of another chair. Thus no collision occurs to the wheel and
thus the lifetime of the wheel is prolonged.
BACKGROUND OF THE INVENTION
[0002] In many applications, the chairs are arranged temporarily
for some activities, such as meeting, exhibition or performance.
After end of the activity, the chairs are collected for storage.
Generally, the chairs are stacked.
[0003] However most of the prior art chairs are not designed for
stacking. For example most of the prior art chairs have four legs.
These legs are almost vertical to the bottom of the seat so that it
is almost impossible to stack the chairs one by one. In another
prior art chair, the chair has only one leg with a disk like base
for supporting on the ground. This kind of chairs are still not
suitable for stacking.
[0004] Another kinds of chairs suitable for stacking are
illustrated in FIGS. 8 and 10, the prior art has four legs which
are installed to a bottom of a seat and at an end of each leg near
the ground is installed with a wheel. The wheel is pivoted to the
leg and is freely rotatably with respect to the leg. The stacking
of these kinds of chairs is illustrated in FIGS. 9 and 10. It is
shown that in stacking, the chair at the upper side cannot firmly
retain to the chair at the lower side. Moreover, as the chairs
stack one by one, the stacking will incline with the extent of the
height of the stacking so that the stacking of the chairs are not
steady. It is very possible that the chairs fall down to the ground
so that the worker must stack the chairs again. Furthermore,
referring to FIG. 10, in the prior art, the wheel is at a right
lower side of the leg. In stacking the wheels will be in contact
with legs of another chair (see FIGS. 9 and 10). For a long time,
the wheels will destroy so as to reduce the lifetime of the
chair.
SUMMARY OF THE INVENTION
[0005] Accordingly, the primary object of the present invention is
to provide a chair capable of being firmly stacked, wherein the
stacking of the chairs is firm and steady, but occupies with less
space. Furthermore, since the wheel is at an outer side of the
supporting leg, the wheel will suspended from the resisting section
without contacting the resisting section of another chair. Thus no
collision occurs to the wheel and thus the lifetime of the wheel is
prolonged.
[0006] To achieve above objects, the present invention provides a
chair capable of being firmly stacked, comprising: a seat; at least
one supporting leg being connected to a bottom of the seat, the
supporting leg including a resisting section and a wheel assembly;
one end of the resisting section being connected to a bottom of the
seat and another end of the resisting section being connected to
the wheel assembly; the wheel assembly including a connecting block
and a wheel pivoted to the connecting block; one inner side of the
connecting block being formed with a resisting groove; the wheel
being installed at an outer side of the supporting leg and is
rotatable with respect to the connecting block; the resisting
groove having a shape corresponding to a periphery of the resisting
section so that the resisting groove can receive the resisting
section of another chair. In stacking, the seat of one chair is
placed above the seat of another chair, while the resisting
sections of the chair at the upper side resist against the
resisting sections of the chair at the lower side.
[0007] Each resisting section is inclined to a bottom of the seat.
The wheel is pivoted to the connecting block and the chair is
shifted with the rotation of the wheel. A back portion is connected
to the seat, each of two sides of the chair has a handle connected
between the back portion and the seat. There are four supporting
legs. The seat has a recessed central portion.
[0008] The various objects and advantages of the present invention
will be more readily understood from the following detailed
description when read in conjunction with the appended drawing.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 is a schematic perspective view of the chair capable
of being firmly stacked according to the present invention.
[0010] FIG. 2 is an enlarged schematic view of the chair of the
present invention.
[0011] FIG. 3 is a schematic cross sectional view of the chair of
the present invention.
[0012] FIG. 4 is a schematic view showing the use of the chair of
the present invention.
[0013] FIG. 5 is a schematic cross sectional view showing the
stacking of chairs of the present invention.
[0014] FIG. 6 is an enlarged schematic view showing the resisting
of the wheels according to the present invention.
[0015] FIG. 7 is a schematic view showing the stacking of the chair
according to the present invention.
[0016] FIG. 8 shows the stacking of the prior art chairs.
[0017] FIG. 9 shows another stacking state of the prior art
chairs.
[0018] FIG. 10 is an enlarged schematic view showing the wheel of
the chair according to the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0019] In order that those skilled in the art can further
understand the present invention, a description will be provided in
the following in details. However, these descriptions and the
appended drawings are only used to cause those skilled in the art
to understand the objects, features, and characteristics of the
present invention, but not to be used to confine the scope and
spirit of the present invention defined in the appended claims.
[0020] Referring to FIGS. 1 to 3, the structure of the chair 1 of
the present invention is illustrated. The present invention has the
following structure.
[0021] A seat 2 has an approximate flat rectangular shape and has a
recessed central portion. The seat 2 serves to support the weight
of the user. A back portion 21 is connected to the seat 2. The seat
2 and back portion 21 are formed as an approximate L shape. Each of
two sides of the chair 1 has a handle 22 connected between the back
portion 21 and the seat 2.
[0022] At least one supporting leg 3 is connected to a bottom of
the seat 2. In this embodiment, four supporting legs 3 are
installed to the seat 2. The supporting leg 3 includes a resisting
section 32 and a wheel assembly 31. One end of the resisting
section 32 is connected to a bottom of the seat 2 and another end
of the resisting section 32 is connected to the wheel assembly 31.
The wheel assembly 31 includes a connecting block 310 and a wheel
312 pivoted to the connecting block 310. One inner side of the
connecting block 310 is formed with a resisting groove 311. The
wheel 312 is installed at an outer side of the supporting leg 3.
Preferably, the connecting block 310 has an approximate rectangular
shape. The resisting groove 311 has a shape corresponding to a
periphery of the resisting section 32 so that the resisting groove
311 can receive the resisting section 32 of another chair.
[0023] Referring to FIGS. 4 to 7, the application of the present
invention is illustrated. In stacking, the seat 2 of one chair 1 is
placed above the seat 2 of another chair 1, while the resisting
sections 32 of the chair 1 at the upper side resists against the
resisting sections 32 of the chair 1 at the lower side. Moreover,
since the resisting groove 311 is at an inner side of the
supporting leg 3, the resisting groove 311 of one resisting section
32 of the chair 1 at the upper side receives a part of the
resisting section 32 of the chair 1 at the loser side. As a result,
the stacking of the chairs is firm and steady. Furthermore, the
stacking of the chairs according to the present invention occupies
less space. Since the wheel 312 is at an outer side of the
supporting leg 3. the wheel 312 will suspended from the resisting
section 32 without contacting the resisting section 32 of another
chair. Thus no collision occurs to the wheel 312 and thus the
lifetime of the wheel 312 is prolonged.
[0024] The present invention is thus described, it will be obvious
that the same may be varied in many ways. Such variations are not
to be regarded as a departure from the spirit and scope of the
present invention, and all such modifications as would be obvious
to one skilled in the art are intended to be included within the
scope of the following claims.
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