U.S. patent application number 12/318614 was filed with the patent office on 2010-07-08 for telescoping foldable chair.
Invention is credited to Libin Chen.
Application Number | 20100171342 12/318614 |
Document ID | / |
Family ID | 42311212 |
Filed Date | 2010-07-08 |
United States Patent
Application |
20100171342 |
Kind Code |
A1 |
Chen; Libin |
July 8, 2010 |
Telescoping foldable chair
Abstract
A telescoping foldable chair having a skeleton having a pair of
lower leg frames of U shape each having a pair of outer legs
connected with a ground bar, a pair of upper leg frames of inverted
U shape each having a pair of inner legs connected with a top cross
bar respectively slidable contained in one of the outer legs, a
front and a rear sets each having a pair of inner tubes
respectively pivotally linked to the top cross bars, a pair of
outer tubes respectively pivotally linked to one lower end of the
outer leg frames, and a central link which pivotally connects free
ends of the inner and outer tubes, and, a sitting cloth attached on
the skeleton. The telescoping foldable chair has a strong structure
yet small folded volume.
Inventors: |
Chen; Libin; (Changzhou,
CN) |
Correspondence
Address: |
Wilson Wu
19 Clipper Road, North York
Toronto
ON
M2J4C8
CA
|
Family ID: |
42311212 |
Appl. No.: |
12/318614 |
Filed: |
January 2, 2009 |
Current U.S.
Class: |
297/45 |
Current CPC
Class: |
A47C 4/283 20130101;
A47C 4/42 20130101 |
Class at
Publication: |
297/45 |
International
Class: |
A47C 4/28 20060101
A47C004/28 |
Claims
1. A telescoping foldable chair comprising: a skeleton having a
pair of lower leg frames of U shape each having a pair of outer
legs connected with a ground bar, a pair of upper leg frames of
inverted U shape each having a pair of inner legs connected with a
top cross bar respectively slidable contained in one of said outer
legs, a front set having a pair of inner tubes respectively
pivotally linked to said top cross bars, a pair of outer tubes
respectively pivotally linked to one lower end of said outer leg
frames, and a front central link which pivotally connects free ends
of said inner and outer tubes, and a rear set having a pair of
inner tubes respectively pivotally linked to said top cross bars, a
pair of outer tubes respectively pivotally linked to one lower end
of said outer leg frame, and a rear central link which pivotally
connects free ends of said inner and outer tubes; and, a sitting
cloth attached on said skeleton.
2. The telescoping foldable chair as claimed in claim 1, wherein
said chair further has a pair of arm frames rotatably and
respectively linked to said upper leg frames.
3. The telescoping foldable chair as claimed in claim 2, wherein
said chair further has a pair of back frames rotatably and
respectively linked to said arm frames and a back cloth attached to
said back frames.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The invention relates to a telescoping foldable chair, and
more particularly, to a foldable chair which has a strong structure
and small folded volume.
[0003] 2. Description of the Prior Art
[0004] Shown in FIGS. 4 and 5 is a conventional foldable chair 9.
The foldable chair 9 has a skeleton 91, a sitting cloth 92 attached
thereto, and a back cloth 93 attached thereto. The foldable chair 9
has a plurality of linking poles 94 which is used to make the
non-telescoping bars of the skeleton 91 foldable with respect to
each other. This foldable chair 9 has some drawbacks: a volume of
the foldable chair is large and a operation of folding and
expanding may be dangerous since the linking poles 94 may nip
fingers of a user. A smaller folded volume of foldable chair is
favorite. But a smaller volume usually means less structure tubes
of chair skeleton. Therefore, a foldable chair having relatively
more constructive skeleton tubes thus stronger structure is needed
in the market.
BRIEF SUMMARY OF THE INVENTION
[0005] The main object of the invention is to provide a telescoping
foldable chair having a strong structure yet small folded
volume.
[0006] In order to obtain above object, the invention provides a
telescoping foldable chair having a skeleton having a pair of lower
leg frames of U shape each having a pair of outer legs connected
with a ground bar, a pair of upper leg frames of inverted U shape
each having a pair of inner legs connected with a top cross bar
respectively slidable contained in one of the outer legs, a front
set having a pair of inner tubes respectively pivotally linked to
the top cross bars, a pair of outer tubes respectively pivotally
linked to one lower end of the outer leg frames, and a front
central link which pivotally connects free ends of the inner and
outer tubes, and a rear set having a pair of inner tubes
respectively pivotally linked to the top cross bars, a pair of
outer tubes respectively pivotally linked to one lower end of the
outer leg frame, and a rear central link which pivotally connects
free ends of the inner and outer tubes; and, a sitting cloth
attached on the skeleton.
[0007] These and other objectives, features, and advantages of the
present invention will become apparent from the following detailed
description, the accompanying drawings, and the appended
claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is a perspective view of the preferred embodiment of
the telescoping foldable chair of the invention.
[0009] FIG. 2 is a perspective view of a skeleton of the chair
shown in FIG. 1 showing a process of folding of the chair.
[0010] FIG. 3 is a perspective view of the skeleton of the chair
shown in FIG. 1 showing a folded chair of the invention.
[0011] FIG. 4 is a perspective view of a conventional foldable
chair. And,
[0012] FIG. 5 is a perspective view of the conventional foldable
chair shown in FIG. 4 with a cloth thereof removed.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0013] As shown in FIG. 1, a preferred embodiment of a telescoping
foldable chair 1 of the invention has a skeleton 10, a soft yet
strong sitting cloth 20 attached on the skeleton 10, and a soft yet
strong back cloth 30 attached on the skeleton 10.
[0014] The skeleton 10 has a pair of lower leg frames 11, 11' of U
shape and each having a pair of outer legs 110, 110' connected with
a ground bar 111, 111', a pair of upper leg frames 12, 12' of
inverted U shape and each having a pair of inner legs 120, 120'
connected with a top cross bar 121, 121' and respectively slidably
contained in an outer leg 110, 110', a pair of arm frames 13, 13'
rotatably and respectively linked to the upper leg frames 12, 12'
with a pair of pins 122, a pair of back frames 14, 14' rotatably
and respectively linked to the arm frames 13, 13'. The back cloth
30 is attached to the pair of back frames 14, 14' of the skeleton
10.
[0015] The pair of lower leg frames 11, 11' and upper leg frames
12, 12' are pivotally linked by a front set 15 and a rear set 16.
The front set 15 has a pair of inner tubes 151, 151' which are
respectively pivotally linked to the top cross bars 121, 121', a
pair of outer tubes 152, 152' which are respectively pivotally
linked to a lower end of the outer leg frames 110, 110'. Free ends
of the inner and outer tubes 151, 151', 152, 152' are pivotally
connected to a front central link 153.
[0016] The rear set 16 has a pair of inner tubes 161, 161' which
are respectively pivotally linked to the top cross bars 121, 121',
a pair of outer tubes 162, 162' which are respectively pivotally
linked to a lower end of the leg frames 110, 110'. Free ends of the
inner and outer tubes 161, 161', 162, 162' are pivotally connected
to a rear central link 163.
[0017] With reference to FIG. 2, a process of using the telescoping
foldable chair of the invention is shown. For better understand of
operation, the sitting cloth 20 and the back cloth 30 are removed
from the figure. In use, a user is able to rotate the back frames
14, 14' down in direction A towards the arm frames 13, 13' and then
step on one of the ground bars 111 or 111' with one foot and hold
one of the arm frames 13 or 13' with one hand and then pull the arm
frame 13 or 13' thus one of the upper leg frames 12 or 12'
connected thereto upward on the contrary to direction B. The inner
tubes 151 or 151' pivotally linked to the top cross bar 121 or 121'
moves upward accordingly. At the same time, the pair of lower leg
frames 11, 11' go towards each other until they meet, as show in
FIG. 2. Then, the user will be able to rotate the pair of arm
frames 13, 13' outward in direction C and then push the top cross
bar 121 or 121' downward in direction B until the inner tubes 151,
151', 161, 161' insert into the outer tubes 152, 152', 162, 162',
as shown in FIG. 3. The user will be able to expand the telescoping
foldable chair of the invention reverse to above mentioned
process.
[0018] From above description, it is seen that the objects of the
present invention have been fully and effectively accomplished.
Embodiment of the invention has been shown and described for the
purposes of illustrating the functional and structural principles
of the present invention and is subject to change without departure
from the invention's principles. Therefore, this invention includes
all modifications encompassed within the spirit and scope of the
following claims.
* * * * *