U.S. patent application number 11/374449 was filed with the patent office on 2007-09-13 for fencing device.
Invention is credited to Shu-Chen Cheng.
Application Number | 20070210293 11/374449 |
Document ID | / |
Family ID | 38478011 |
Filed Date | 2007-09-13 |
United States Patent
Application |
20070210293 |
Kind Code |
A1 |
Cheng; Shu-Chen |
September 13, 2007 |
Fencing device
Abstract
A fencing device has at least one first fence and at least one
second fence adjacent to the first fence, and at least one
positioning device. The first fence has an upper block and a lower
block respectively formed at an upper end and a lower end thereof,
an upper ear and a lower ear. The upper ear has multiple first
skewed surfaces, and each positioning device has a seat having
multiple second skewed surfaces. With the interconnection of the
first skewed surfaces and the second skewed surfaces, the present
invention can be folded or unfolded conveniently.
Inventors: |
Cheng; Shu-Chen; (Taipei
Hsien, TW) |
Correspondence
Address: |
Thomas E. Sisson;Jackson Walker, LLP
Suite 2100
112 E. Pecan
San Antonio
TX
78205
US
|
Family ID: |
38478011 |
Appl. No.: |
11/374449 |
Filed: |
March 13, 2006 |
Current U.S.
Class: |
256/26 |
Current CPC
Class: |
E04H 17/18 20130101;
E04H 17/1448 20210101 |
Class at
Publication: |
256/026 |
International
Class: |
E04H 17/16 20060101
E04H017/16 |
Claims
1. A fencing device comprising: at least one first fence each
having a lower block mounted on a lower end of the first fence and
having a first cone-shaped chamber defined in an upper end of the
lower block, an upper block mounted on an upper end of the first
fence and having a second cone-shaped chamber defined in a lower
end of the upper block, a lower collar mounted in the lower block
and having a lower cap mounted around an upper end of the lower
collar and mated with the first cone-shaped chamber, an upper
collar mounted under the upper block and having an upper cap
mounted around a lower end of the upper collar and mated with the
second cone-shaped chamber; at least one second fence connected to
the at least one first fence and each having a lower ear mounted on
the lower block of a corresponding first fence and having a notch
defined in a center of the lower ear, an upper ear mounted under
the upper block of the corresponding first fence and having
multiple first skewed surfaces formed in an inner wall of the upper
ear and each having a first lowermost end, and a first uppermost
end; at least one positioning device mounted between each pair of
adjacent first fence and second fence and each comprising a seat
attached to a corresponding upper ear and having a head formed in
an upper end of the seat, attached to the corresponding upper ear
and having multiple second skewed surfaces formed in an inner wall
of the head and each having a second lowermost end, and a second
uppermost end, and a coil spring mounted inside the seat; and a
barrel slidably mounted in the seat and positioned to the notch in
a corresponding lower ear via a lower end of the barrel and having
a slot longitudinally defined in the barrel, a plug attached to a
top end of the barrel and contacting with the coil spring, and a
pin inserted into the slot and the seat.
2. The fencing device as claimed in claim 1, wherein a symbol is
provided on the upper block of each one of the at least one first
fence.
3. The fencing device as claimed in claim 1, wherein each one of
the at least one positioning device further has a washer provided
under a corresponding lower block.
4. The fencing device as claimed in claim 1, wherein an indicator
is provided in the upper ear of each one of the at least one second
fence.
5. The fencing device as claimed in claim 1, wherein the lower ear
of each one of the at least one second fence further has a guiding
groove defined in an upper end of the lower ear, extending from an
inner wall to an outer wall of the lower ear, and communicating
with the notch on the lower ear.
6. The fencing device as claimed in claim 5, wherein a mark is
provided in the seat of each one of the at least one positioning
device.
7. The fencing device as claimed in claim 1, wherein multiple first
even-spaced stripes are longitudinally provided in an inner wall of
the lower collar of each one of the at least one first fence and
multiple second even-spaced stripes are longitudinally provided in
an inner wall of the upper collar of each one of the at least one
first fence, and multiple evenly-spaced slots are longitudinally
defined in an inner wall of the upper ear and the lower ear of each
one of the at least one second fence and the slots are respectively
mated with the first even-spaced stripes and the second even-spaced
stripes of on corresponding upper and lower collars.
8. The fencing device as claimed in claim 1, wherein the upper
block of each one of the at least one first fence has multiple
even-spaced teeth formed on an inner wall of the upper block, and
the upper ear of each one of the at least one second fence is
mounted with a corresponding upper collar and has multiple teeth
engaging with the teeth on the corresponding upper collar to
securely connect the upper block to the upper ear.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a fencing device, and more
particularly to a fencing device which can be folded and unfolded
conveniently.
[0003] 2. Description of the Related Art
[0004] A main purpose of fences is to surround children or ovens to
prevent children from going around or from contacting with the
ovens.
[0005] In a conventional fencing device, particularly intended for
small children, a spring is pressed via a pin being pulled so that
a first and a second hinge portions can be separated from each
other. Hence, the first hinge portion can be rotated relative to
the second hinge portion to adjust the fencing device.
[0006] Disadvantages of the conventional fence device are described
as follows:
[0007] 1. The first and the second hinge portions are easy to
collide when being adjusted.
[0008] 2. The first and the second hinge portions must be separated
from each other completely when adjusting the conventional fencing
device thereby causing inconvenience.
[0009] Therefore, the invention provides a fencing device to
mitigate or obviate the aforementioned problems.
SUMMARY OF THE INVENTION
[0010] The main objective of the present invention is to provide a
fencing device which is easy to be folded and unfolded.
[0011] Other objectives, advantages and novel features of the
invention will become more apparent from the following detailed
description when taken in conjunction with the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a perspective view of a fencing device in
accordance with the present invention being unfolded;
[0013] FIG. 2 is an exploded perspective view of a first preferred
embodiment of the fencing device in accordance with the present
invention;
[0014] FIG. 3 is a partially exploded perspective view of the first
preferred embodiment of the fencing device in FIG. 2;
[0015] FIG. 4 is a side view in partial section of the first
preferred embodiment of the fencing device in FIG. 2;
[0016] FIG. 5 is an operational side view in partial section of the
first preferred embodiment of the fencing device in FIG. 4;
[0017] FIG. 6 is a perspective view of the fencing device in FIG. 1
being folded;
[0018] FIG. 7 is a perspective view of an upper block of a second
preferred embodiment of a fencing device in accordance with the
present invention;
[0019] FIG. 8 is a bottom perspective view of the upper block of
the second preferred embodiment of the fencing device in FIG.
7;
[0020] FIG. 9 is a perspective view of an upper ear of the second
preferred embodiment of the fencing device in accordance with the
present invention; and
[0021] FIG. 10 is a perspective view of the fencing device in
accordance with the present invention being used to form a hexagon
status.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0022] With reference to FIGS. 1-4, a first preferred embodiment of
a fencing device in accordance with the present invention comprises
at least a first fence (10), at least a second fence (20) adjacent
to the first fences (10) and at least one positioning device.
[0023] Each first fence (10) has a lower block (11), an upper block
(12), a lower collar (31) and an upper collar (32). The lower block
(11) and the upper block (12) are respectively provided on a lower
end and an upper end of the first fence (10). The lower block (11)
has a first cone-shaped chamber (111) defined in an upper end
thereof, and the upper block (12) has a second cone-shaped chamber
(121) defined in a lower end thereof. A symbol (122) is provided on
the upper block (12) to indicate angle adjustment between the
adjacent first fence (10) and second fence (20).
[0024] Each second fence (20) comprises a lower ear (21) and an
upper ear (22) respectively provided on a lower end and an upper
end thereof The lower ear (21) and the upper ear (22) respectively
have multiple evenly-spaced slots (23) longitudinally defined on an
outer wall thereof. The upper ear (22) has an indicator (224) and
multiple first skewed surfaces (221). The indicator (224) is formed
on the upper ear (22) to indicate that the first fence (10) is
locked to the corresponding second fence (20). Each first skewed
surface (221), which has a first uppermost end (222) and a first
lowermost end (223), is provided in an inner wall of the upper ear
(22). The lower ear (21) has a notch (211) defined therein and a
guiding groove (212) defined in an upper end of the lower ear (21)
and extending from an inner wall to an outer wall of the lower ear
(21). The notch (211) communicates with the guiding groove
(212).
[0025] A lower cap (33), which is made of rubber or plastic, is
integrally formed at a lower end of the lower collar (31) while an
upper cap (34), having the same material as the lower cap (33), is
integrally formed at an upper end of the upper collar (32).
Multiple first even-spaced stripes (35) are longitudinally provided
in an inner wall of the lower collar (33) and multiple second even-
spaced stripes (36) are longitudinally provided in an inner wall of
the upper collar (32). The slots (23) on the ears (21,22) are
respectively mated with the first even-spaced stripes (35) and the
second even-spaced stripes (36).
[0026] At least one positioning device is mounted between each pair
of adjacent first fence (10) and second fence (20) and each
comprises a washer (30), a seat (40), and a barrel (50)
[0027] The washer (30) is provided under the lower block (11)
wherein the upper collar (32) is provided under the second
cone-shaped chamber (121) of the upper block (12). The upper cover
(34) is held inside and contacted with the second cone-shaped
chamber (121) to enhance the friction between them. The lower
collar (31) is mounted under the lower ear (32) while the upper
collar (32) is mounted above the upper ear (22).
[0028] The barrel-like seat (40) is attached to the upper ear (22)
and has a mark (401) to indicate that the first fence (10) is
securely fastened to the second fence (20). A head (41) is mounted
on an upper end of the seat (40) and is attached to the upper ear
(22). Multiple second skewed surfaces (42) are respectively formed
in an inner wall of the head (41) and each have a second uppermost
end (421) and a second lowermost end (422). A lower end of the seat
(40) is hollow and a through hole (43) is radially defined through
the seat (40). A coil spring (44) is mounted inside the seat
(40).
[0029] The hollow barrel (50) has a slot (51) longitudinally
defined near an upper end of the barrel (50), and a plug (52)
mounted at the upper end. The upper end of the barrel (50) is
inserted into and held inside the seat (40) and a lower end of the
barrel (50) is positioned in the notch (211). The plug (52) is
contacted with a lower end of the coil spring (44).
[0030] A pin (60) is transversely inserted into the through hole
(43) and the slot (51) in turn so that the barrel (50) can only
move upwards or downwards along the seat (40).
[0031] With reference to FIGS. 1 and 4, when the first lowermost
surface (223) is engaged with the first uppermost surface (421),
the upper cover (34) is pressed against the upper ear (22) with the
biasing force provided by the coil spring (44) while the lower
cover (33) is pressed against the lower ear (21). Hence, the first
fence (10) is fastened to the second fence (20).
[0032] With reference to FIGS. 5 and 6, the seat (40) is rotated
relative to the upper ear (22) manually so that the first uppermost
end (421) is engaged with the second uppermost end (222) and the
first lowermost end (422) is engaged with the second lowermost end
(223). Hence, the coil spring (40) resumes an original status so
that the first fence (10) can be folded relative to the second
fence (20) to occupy little space for storage.
[0033] With reference to FIGS. 1, 7-9 and in a second preferred
embodiment of a fencing device in accordance with the present
invention, the fencing device is similar to the first preferred
embodiment except that an upper block (12A) has multiple
even-spaced teeth (12B) formed around an inner wall of the upper
block (12A). An upper ear (22A) is integrally formed on the upper
collar (32) and have multiple teeth (22B) formed at a periphery of
the upper ear (22A). The teeth (12B) are respectively mated with
the teeth (22B) to fasten the upper block (12A) to the upper ear
(22A).
[0034] With reference to FIG. 10, the present invention is
encircled to form a hexagon so that children can stay in the
present invention to be protected.
[0035] It is to be understood, however, that even though numerous
characteristics and advantages of the present invention have been
set forth in the foregoing description, together with details of
the structure and function of the invention, the disclosure is
illustrative only. Changes may be made in details, especially in
matters of shape, size, and arrangement of parts within the
principles of the invention to the full extent indicated by the
broad general meaning of the terms in which the appended claims are
expressed.
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