U.S. patent application number 11/234327 was filed with the patent office on 2007-02-01 for panel for maintaining high pressure strength at any point.
This patent application is currently assigned to Hae Kwang Co., Ltd.. Invention is credited to Chae-Won Kim.
Application Number | 20070022696 11/234327 |
Document ID | / |
Family ID | 37271098 |
Filed Date | 2007-02-01 |
United States Patent
Application |
20070022696 |
Kind Code |
A1 |
Kim; Chae-Won |
February 1, 2007 |
Panel for maintaining high pressure strength at any point
Abstract
The present invention relates to a high-strength panel used as
flooring in a clean facility, such as a semiconductor clean room.
The high-strength panel comprises rim ribs, each having a tapered
surface, formed at a respective rim portions of the panel. A main
reinforcing rib divides an interior space defined by the rim
potions into a plurality of square lattice sections. A plurality of
auxiliary reinforcing ribs is arranged in each of the square
lattice sections to divide the lattice sections into sub-sections,
wherein a plurality of circular recesses is diagonally arranged in
each sub-section, Each circular recess is surrounded by a circular
rib. Accordingly, a supporting force for resisting a vertical load
and an eccentric load is enhanced. Thus, the strength of the panel
for resisting a concentrated load is increased by distributing the
load downwardly concentrated at a specific location of the panel
throughout the entire panel.
Inventors: |
Kim; Chae-Won; (Seoul,
KR) |
Correspondence
Address: |
LEE, HONG, DEGERMAN, KANG & SCHMADEKA
801 S. FIGUEROA STREET
12TH FLOOR
LOS ANGELES
CA
90017
US
|
Assignee: |
Hae Kwang Co., Ltd.
|
Family ID: |
37271098 |
Appl. No.: |
11/234327 |
Filed: |
September 23, 2005 |
Current U.S.
Class: |
52/630 |
Current CPC
Class: |
F24F 2221/40 20130101;
F24F 3/167 20210101 |
Class at
Publication: |
052/630 |
International
Class: |
E04C 2/38 20060101
E04C002/38 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 29, 2005 |
KR |
2005-69402 |
Claims
1. A high-strength panel comprising: rim ribs formed at respective
rim portions of the panel and each provided with a tapered surface
to have a downwardly increasing thickness; a main reinforcing rib
serving as a partition to divide an interior space defined by the
rim portions into a plurality of square lattice sections; a
plurality of auxiliary reinforcing ribs arranged in a respective
one of the square lattice sections to divide the square lattice
section into 4 rows and 4 columns, i.e. into sixteen sub-sections;
and a plurality of circular recesses formed at a bottom layer of
each sub-section defined by the auxiliary reinforcing ribs, whereby
the panel achieves an enhancement in supporting force resistant to
vertical load and eccentric load applied thereto.
2. The high-strength panel as set forth in claim 1, wherein the rim
portions are centrally formed with a predetermined number of rim
lattice sections, and each rim lattice section is divided into four
sub-sections by the auxiliary reinforcing ribs.
3. The high-strength panel as set forth in claim 1, wherein the
circular recesses, formed at a lower surface of the sub-section
defined by the auxiliary reinforcing ribs, are surrounded by
circular ribs, respectively.
4. A high-strength panel for enhancing a supporting force for
resisting a vertical load and an eccentric load applied thereto,
comprising: a plurality of square lattice sections formed by a
plurality of main reinforcing ribs intersecting one another; a
plurality of auxiliary reinforcing ribs formed in each of the
plurality of square lattice sections, wherein the plurality of
auxiliary reinforcing ribs are arranged to divide each square
lattice section into sub-sections; and a plurality of circular ribs
formed in each sub-section, wherein each circular rib has a
circular recess.
5. The high-strength panel of claim 4, further comprising rim ribs
formed at edges of the high-strength panel.
6. The high-strength panel of claim 4, wherein a height of the
plurality of auxiliary reinforcing ribs is one-half a height of the
plurality of main reinforcing ribs.
7. The high-strength panel of claim 4, wherein a height of the
plurality of auxiliary reinforcing ribs is one-half to one-third a
height of the plurality of main reinforcing ribs.
8. The high-strength panel claim 4, wherein the plurality of
auxiliary reinforcing ribs divides each square lattice section into
sixteen sub-sections of four rows and four columns.
9. The high-strength panel of claim 4, wherein the circular
recesses are formed in a 2.times.2 array in each sub-section.
10. The high-strength panel of claim 4, wherein the circular
recesses are diagonally aligned in each sub-section.
11. The high-strength panel of claim 4, wherein the circular
recesses are arranged in each sub-section to define a
diamond-shaped supporting recess in the center of the
sub-section.
12. The high-strength panel of claim 11, wherein a diagonal length
of the diamond-shaped recess is shorter than a diameter of the
circular recess.
13. The high-strength panel of claim 5, wherein the rim ribs are
respectively formed at rim portions of the high-strength panel.
14. The high-strength panel of claim 5, wherein the rim ribs
comprise a tapered surface having a downwardly increasing
thickness.
15. The high-strength panel of claim 13, wherein the rim portions
are formed with a predetermined number of rim lattice sections.
16. The high-strength panel of claim 15, wherein each rim lattice
section is divided into four sub-sections by the auxiliary
reinforcing ribs.
17. A high-strength panel for enhancing a supporting force for
resisting a vertical load and an eccentric load applied thereto,
comprising: a plurality of square lattice sections formed by a
plurality of main reinforcing ribs intersecting one another; a
plurality of auxiliary reinforcing ribs formed in each of the
plurality of square lattice sections, wherein the plurality of
auxiliary reinforcing ribs are arranged to divide each square
lattice section into sub-sections; a plurality of circular recesses
formed in a 2.times.2 array in each sub-section; and rims ribs
respectively formed at rim portions of the high-strength panel.
18. The high-strength panel of claim 17, wherein the circular
recesses are diagonally aligned in each sub-section.
19. The high-strength panel of claim 17, wherein the circular
recesses are arranged in each sub-section to define a
diamond-shaped supporting recess in the center of the
sub-section.
20. The high-strength panel of claim 17, wherein the rim ribs
comprise a tapered surface having a downwardly increasing
thickness.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] Pursuant to 35 U.S.C. .sctn. 119(a), this application claims
the benefit of earlier filing date and right of priority to Korean
Application No. 2005-69402, filed on Jul. 29, 2005, the contents of
which is hereby incorporated by reference herein in its
entirety.
FIELD OF THE INVENTION
[0002] The present invention relates to a high-strength panel for
use as flooring in a clean facility, such as a semiconductor clean
room.
BACKGROUND OF THE INVENTION
[0003] As is well known to those skilled in the art, a clean room
in which a variety of special experimental and production equipment
are mounted, utilizes a double flooring system. Examples of such
clean rooms include a production room for highly integrated
circuits such as semiconductors and a genetic engineering
laboratory. The double flooring system is constructed with a
predetermined height in order to uniformly distribute the load of
the variety of special equipment while effectively absorbing and
removing exterior dust particles, fine particulates, and the like
to thereby prevent the generation of cracks or depressions in the
floor even when the load is concentrated on a specific location of
the double flooring system.
[0004] When the double flooring system is used at certain locations
where permeation of cold air into the flooring system, or
overheating of the flooring system caused by heat produced from
special machinery must be prevented, or at places requiring an
adjustment in the temperature and humidity of the room and an
absorption and removal of dust particles, fine particulates and the
like, the double flooring system may include a porous panel
possessing a number of fine pores. An underside of the porous panel
forms a floor having a supporting structure. Due to a variety of
exhaust devices and cable equipment being mounted underneath the
floor, the floor, being the bottom surface of a semiconductor clean
room, must be spaced apart from the ground by a certain constant
height. Considering the size of the exhaust devices and cable
equipment and other various conditions, the installation height of
the floor must have variability.
[0005] FIGS. 1 and 2 illustrate a structure of a conventional
bottom panel for use in a clean room. As shown in FIGS. 1 and 2,
the conventional bottom panel 2 comprises a rim portion 202 formed
along the rim of a lower surface of the panel, wherein the rim
portion 202 has a plurality of rectangular recesses. The convention
bottom panel 2 also comprises a plurality of square lattice
sections 204 defined inside the rim portion 202.
[0006] The conventional bottom panel 2 further comprises a main
reinforcing rib 206, which serves as a partition between the
lattice sections 204. As shown in FIG. 2, the main reinforcing rib
206 has a predetermined height. A plurality of circular recesses
208 are vertically and horizontally formed at a bottom surface of
the panel 2 sectionalized by the main reinforcing rib 206. The
circular recesses 208 respectively adjacent to one another are
interconnected by vertical and horizontal bars 210 so that
octagonal recesses 212 are defined in spaces therebetween.
[0007] The conventional bottom panel having the above described
configuration, however, is problematic because the bottom panel is
easily warped or damaged by shock or vibration when a variety of
heavy equipment is directly disposed on an upper surface of the
bottom panel.
[0008] Specifically, if the bottom panel is exposed to a vertical
load transmitted from the heavy equipment to the upper surface
thereof, and an eccentric load when the equipment is gathered at a
specific location on the panel, the vertical and eccentric loads
tend to be concentrated on the circular recesses 208, the circular
recess connecting bars 210 and the octagonal recesses 212 between
the respective adjacent circular recesses 208.
[0009] Because each lattice section 204, defined by the main
reinforcing rib 206, has relatively large vertical and horizontal
lengths and the plurality of circular recesses 208 is distributed
in the lattice section 204, if the vertical load and lateral
eccentric load are transmitted to the center of the lattice section
204, the circular recesses 208 and the octagonal recesses 212,
located at the center of the lattice section 204, will be incapable
of withstanding such load, thus causing the generation of damage
and cracks.
SUMMARY OF THE INVENTION
[0010] The present invention is directed to a high-strength panel
for use as flooring in a clean facility, such as a semiconductor
clean room.
[0011] Additional features and advantages of the invention will be
set forth in the description which follows, and in part will be
apparent from the description, or may be learned by practice of the
invention. The objectives and other advantages of the invention
will be realized and attained by the structure particularly pointed
out in the written description and claims hereof as well as the
appended drawings.
[0012] To achieve these and other advantages and in accordance with
the purpose of the present invention, as embodied and broadly
described, the present invention is embodied in a high-strength
panel comprising rim ribs formed at respective rim portions of the
panel and each provided with a tapered surface to have a downwardly
increasing thickness, a main reinforcing rib serving as a partition
to divide an interior space defined by the rim portions into a
plurality of square lattice sections, a plurality of auxiliary
reinforcing ribs arranged in a respective one of the square lattice
sections to divide the square lattice section into 4 rows and 4
columns, i.e. into sixteen sub-sections, and a plurality of
circular recesses formed at a bottom layer of each sub-section
defined by the auxiliary reinforcing ribs, whereby the panel
achieves an enhancement in supporting force resistant to vertical
load and eccentric load applied thereto.
[0013] Preferably, the rim portions are centrally formed with a
predetermined number of rim lattice sections, and each rim lattice
section is divided into four sub-sections by the auxiliary
reinforcing ribs. The circular recesses, formed at a lower surface
of the sub-section defined by the auxiliary reinforcing ribs, are
surrounded by circular ribs, respectively.
[0014] In another embodiment of the present invention, a
high-strength panel for enhancing a supporting force for resisting
a vertical load and an eccentric load applied thereto comprises a
plurality of square lattice sections formed by a plurality of main
reinforcing ribs intersecting one another, a plurality of auxiliary
reinforcing ribs formed in each of the plurality of square lattice
sections, wherein the plurality of auxiliary reinforcing ribs are
arranged to divide each square lattice section into sub-sections,
and a plurality of circular ribs formed in each sub-section,
wherein each circular rib has a circular recess. Preferably, the
high-strength panel further comprises rim ribs formed at edges of
the high-strength panel.
[0015] In one aspect of the present invention, a height of the
plurality of auxiliary reinforcing ribs is one-half a height of the
plurality of main reinforcing ribs. Alternatively, a height of the
plurality of auxiliary reinforcing ribs is one-half to one-third a
height of the plurality of main reinforcing ribs.
[0016] Preferably, the plurality of auxiliary reinforcing ribs
divides each square lattice section into sixteen sub-sections of
four rows and four columns. Preferably, the circular recesses are
formed in a 2.times.2 array in each sub-section, diagonally aligned
in each sub-section, and arranged in each sub-section to define a
diamond-shaped supporting recess in the center of the sub-section.
A diagonal length of the diamond-shaped recess is shorter than a
diameter of the circular recess.
[0017] In another aspect of the present invention, the rim ribs are
respectively formed at rim portions of the high-strength panel.
Moreover, the rim ribs comprise a tapered surface having a
downwardly increasing thickness. Preferably, the rim portions are
formed with a predetermined number of rim lattice sections, wherein
each rim lattice section is divided into four sub-sections by the
auxiliary reinforcing ribs.
[0018] In another embodiment of the present invention, a
high-strength panel for enhancing a supporting force for resisting
a vertical load and an eccentric load applied thereto comprises a
plurality of square lattice sections formed by a plurality of main
reinforcing ribs intersecting one another, a plurality of auxiliary
reinforcing ribs formed in each of the plurality of square lattice
sections, wherein the plurality of auxiliary reinforcing ribs are
arranged to divide each square lattice section into sub-sections, a
plurality of circular recesses formed in a 2.times.2 array in each
sub-section, and rim ribs respectively formed at rim portions of
the high-strength panel.
[0019] Preferably, the circular recesses are diagonally aligned in
each sub-section and are arranged in each sub-section to define a
diamond-shaped supporting recess in the center of the sub-section.
Preferably, the rim ribs comprise a tapered surface having a
downwardly increasing thickness.
[0020] It is to be understood that both the foregoing general
description and the following detailed description of the present
invention are exemplary and explanatory and are intended to provide
further explanation of the invention as claimed.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings, which are included to provide a
further understanding of the invention and are incorporated in and
constitute a part of this specification, illustrate embodiments of
the invention and together with the description serve to explain
the principles of the invention. Features, elements, and aspects of
the invention that are referenced by the same numerals in different
figures represent the same, equivalent, or similar features,
elements, or aspects in accordance with one or more
embodiments.
[0022] FIG. 1 is a bottom view of a conventional panel for use in a
clean room.
[0023] FIG. 2 is an enlarged perspective view illustrating a
portion of the conventional panel of FIG. 1.
[0024] FIG. 3 is a bottom view of a high-strength panel for use in
a clean room in accordance with one embodiment of the present
invention.
[0025] FIG. 4 is an enlarged perspective view illustrating a
portion of the high-strength panel of FIG. 3 in accordance with one
embodiment of the present invention.
[0026] FIG. 5 is a plan view of FIG. 4 in accordance with one
embodiment of the present invention.
[0027] FIG. 6 is a sectional view of the high-strength panel in
accordance with one embodiment of the present invention.
[0028] FIG. 7 is an enlarged view of FIG. 3 in accordance with one
embodiment of the present invention
[0029] FIG. 8 is a sectional view taken along line A-A of FIG. 7 in
accordance with one embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0030] The present invention relates to a high-strength panel for
enhancing a supporting force for resisting a vertical load and an
eccentric load applied thereto.
[0031] A preferred embodiment of the present invention will be
explained with reference to the accompanying drawings.
[0032] FIG. 3 is a bottom view of a high-strength panel for use in
a clean room. FIG. 4 is an enlarged perspective view illustrating a
portion of the high-strength panel of FIG. 3. FIG. 5 is a plan view
of FIG. 4 in accordance with one embodiment of the present
invention.
[0033] FIG. 6 is a sectional view of the high-strength panel. FIG.
7 is an enlarged view of FIG. 3. FIG. 8 is a sectional view taken
along line A-A of FIG. 7 in accordance with one embodiment of the
present invention.
[0034] In accordance with one embodiment of the present invention,
rim ribs 316, which form rim portions 302 of a high-strength panel
30 (as shown in FIGS. 3 and 6), have increased thickness as
compared to a conventional panel. Each rim rib 316 further has a
tapered surface.
[0035] Furthermore, the rim ribs 316 of the rim portions 302, which
support four corners of the panel 30, are reinforced in
consideration of a higher height of the ribs. Accordingly,
resistance against initial deformation is increased. Moreover,
because of a thicker thickness of the ribs, critical strength to
sustain a breaking load is enhanced. Also, the presence of the
tapered surface allows the rim ribs 316 to achieve a uniform
initial deformation value and breaking strength at any location
thereof.
[0036] In one aspect of the present invention, a plurality of
auxiliary reinforcing ribs 307 as shown in FIGS. 3, 4, 6 and 8, are
arranged in respective lattice sections defined by a main
reinforcing rib 306. Preferably, the auxiliary reinforcing ribs 307
have half the height of the main reinforcing rib 306, and are
arranged to divide a respective one of the lattice sections into 4
rows and 4 columns. That is, each lattice section defined by the
main reinforcing rib 306 is divided into sixteen sub-sections by
the auxiliary reinforcing ribs 307.
[0037] Preferably, each sub-section, defined by the auxiliary
reinforcing ribs 307, is formed at a lower surface thereof with
circular recesses 308 in a 2.times.2 array. The circular recesses
308 are diagonally aligned to minimize the area of a recess defined
therebetween. Also, a circular rib 314 surrounds each circular
recess 308, as shown in FIGS. 4, 7 and 8. With this configuration,
a supporting force of the panel 30 resistant to the vertical load
and eccentric load is enhanced, and a degradation of the supporting
force at a specific location of the panel 30 is prevented.
[0038] Therefore, by virtue of the rim ribs 316 and the auxiliary
reinforcing ribs 307 inside the main reinforcing rib 306, the panel
30 of the present invention achieves an enhanced supporting force
resistant to the vertical and eccentric loads and prevents a
degradation of the supporting force at a specific location
thereof.
[0039] Referring to FIGS. 4, 7 and 8, the plurality of circular
recesses 308, which are surrounded by the respective circular ribs
314, are formed at a bottom layer 310 of each sub-section defined
by the respective auxiliary reinforcing ribs 307.
[0040] As shown in FIG. 6, the height of the auxiliary reinforcing
ribs 307 is preferably approximately 1/2 to 1/3 the height of the
main reinforcing rib 306.
[0041] Such a height of the auxiliary reinforcing ribs 307 is
determined in consideration of the material costs of the entire
panel as well as a panel supporting force effective to resist the
vertical and eccentric loads. Thus, an excessively high height of
the auxiliary reinforcing ribs 307 beyond the above range is
economically undesirable because it results in an increase in the
price of products.
[0042] Meanwhile, with respect to the circular recesses 308 in
accordance with the present invention, the thicker the thickness of
the circular rib 314 that encloses a respective one of the circular
recesses 308, the supporting force resistant to the vertical and
eccentric loads is increased.
[0043] As shown in FIG. 7, the circular recesses 308, formed at the
lower surface of the high-strength panel 30, are diagonally spaced
apart, rather than being vertically and horizontally spaced apart,
from one another. In this case, the respective adjacent four
circular recesses 308 in a 2.times.2 array define a diamond-shaped
supporting recess 312 in the center thereof. The diamond-shaped
supporting recess 312 is better at enhancing the supporting force
while keeping the original shape of the circular recesses 308.
Preferably, a diagonal length of the diamond-shaped recess 312 is
shorter than a diameter of the circular recess 308.
[0044] In the present invention, the rim portions 302 of the
supporting panel 30 are centrally formed with a predetermined
number of rim lattice sections 303, as shown in FIGS. 3 and 6. Each
of the rim lattice sections 303 contains the auxiliary reinforcing
ribs 307 which divide the lattice section 303 into four
sub-sections.
[0045] As is apparent from the above description, the high-strength
panel of the present invention is configured such that rim ribs are
formed along the rim of the panel and a plurality of auxiliary
reinforcing ribs are arranged in a respective one of lattice
sections defined by a main reinforcing rib so as to provide the
entirety of the panel with a supporting force for effectively
increasing the strength of the panel resistant to a concentrated
load. Further, according to the present invention, since a
plurality of circular recesses is formed at a lower surface of the
panel and is surrounded by circular ribs, respectively, it is
possible to effectively support vertical and eccentric loads
applied to the entirety of the panel while preventing the
downwardly applied load from being concentrated at a specific
location of the panel by distributing the load throughout the
panel.
[0046] Although the bottom supporting panel according to the
preferred embodiment of the present invention has been disclosed
for illustrative purposes, those skilled in the art will appreciate
that various modifications of the present invention, additions and
substitutions are possible, without departing from the scope and
spirit of the invention as disclosed in the accompanying
claims.
* * * * *