U.S. patent number 3,927,769 [Application Number 05/464,916] was granted by the patent office on 1975-12-23 for shelf structure.
This patent grant is currently assigned to Metropolitan Wire Goods Corporation. Invention is credited to Louis Maslow, deceased, by Frances Maslow, executor, by Richard Maslow, executor.
United States Patent |
3,927,769 |
Maslow, deceased , et
al. |
* December 23, 1975 |
Shelf structure
Abstract
A shelf mountable on vertical support members is made of a
rectangular piece of sheet metal and is provided with truncated
corners. A flange extends around the periphery of the shelf
including the regions of the truncated corners to reinforce the
shelf. Connector members are clamped to the flange at the truncated
corners and are adapted for mounting on the vertical support
members. Spaced parallel ribs substantially extend between one pair
of opposing edges of the shelf and are parallel to the other pair
of edges. A row of elongate rectangular apertures is provided
between each pair of spaced parallel ribs. The rows have lengths
substantially corresponding to those of the ribs. In this manner,
objects placed on the ribs are maintained at a level above the
surface of the shelf and air is permitted to pass through the
apertures and circulate around the objects including along the
supported surfaces thereof. The ribs reinforce the shelf in the
regions weakened by the apertures.
Inventors: |
Maslow, deceased; Louis (LATE
OF Dallas, TX), Maslow, executor; by Frances (Dallas,
TX), Maslow, executor; by Richard (Wilkes-Barre, PA) |
Assignee: |
Metropolitan Wire Goods
Corporation (Wilkes-Barre, PA)
|
[*] Notice: |
The portion of the term of this patent
subsequent to April 1, 1992 has been disclaimed. |
Family
ID: |
23845772 |
Appl.
No.: |
05/464,916 |
Filed: |
April 29, 1974 |
Current U.S.
Class: |
211/153; 108/156;
34/238; D6/705.7 |
Current CPC
Class: |
F26B
25/18 (20130101) |
Current International
Class: |
F26B
25/18 (20060101); F26B 25/06 (20060101); A47F
005/00 () |
Field of
Search: |
;211/153 ;34/238,237,57A
;108/144,156 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Britts; Ramon S.
Attorney, Agent or Firm: Friedman & Goodman
Claims
What is claimed is:
1. A shelf mountable on a shelf support structure, said shelf
comprising a substantially flat, one-piece rectangular sheet of
material having downwardly depending corner portions, said corner
portions at each corner being disposed in a plane substantially
normal to a plane defined by said flat sheet; connector means on
said sheet for mounting said shelf on the support structure, said
connector means including corner connectors at each corner, each
connector including a corner structure disposed on one side of a
respective corner portion and a clamping bar disposed on an
opposing side of the respective corner portion, at least one of
said corner structure and clamping bar being provided with a recess
dimensioned to receive a corner portion when the latter is clamped
between an associated corner structure and clamping bar, surfaces
of said corner structure and clamping bar being substantially
complementary to each other; fastening means for maintaining each
corner structure and associated clamping bar in abutment against
each other and against a respective corner portion with the latter
being received within the respective recess, said corner structures
further being provided with means for mounting the same on a shelf
support post, each corner connector defining a substantially closed
crevice-free structure which houses a corner portion; a plurality
of spaced protuberances projecting above one major surface of said
sheet; and a plurality of apertures provided between said spaced
protuberances, whereby objects placed on said protuberances are
maintained at a level above said one major surface and air is
permitted to pass through said apertures and circulate around the
objects including along supported surfaces thereof.
2. A shelf as defined in claim 1, wherein said flat sheet of
material is made from sheet metal.
3. A shelf as defined in claim 1, wherein said corner portions are
truncated, said sheet being provided with a peripheral flange
extending substantially around an entire periphery of said sheet
including in regions of said truncated corner portions to reinforce
said sheet.
4. A shelf as defined in claim 1, wherein said protuberances
comprise a plurality of spaced ribs.
5. A shelf as defined in claim 4, wherein said ribs substantially
extend between one pair of opposing edges and are parallel to the
other pair of opposing edges.
6. A shelf as defined in claim 4, wherein said spaced ribs are
straight and parallel to each other.
7. A shelf as defined in claim 6, wherein said apertures comprise a
row of spaced apertures between each two spaced parallel ribs.
8. A shelf as defined in claim 7, wherein each aperture is
substantially rectangular and has dimensions of the same order of
magnitude as the spacing between two ribs, whereby the spaces
between adjacent ribs are substantially open to maximize the amount
of ventilation therethrough.
9. A shelf as defined in claim 7, wherein said ribs and rows of
apertures are straight and each parallel to one pair of opposing
edges of said sheet.
10. A shelf as defined in claim 9, wherein said ribs and rows of
apertures are approximately the same length and each substantially
extend between the other pair of opposing edges.
Description
BACKGROUND OF THE INVENTION
Shelves, and particularly those for industrial use, are frequently
utilized to support objects while the latter dry or cool subsequent
to a treatment process. To promote drying or cooling of objects in
this manner, air is frequently circulated around the objects.
However, objects placed on prior art shelves have frequently not
been adequately dried or cooled on the undersides or in the regions
of the support surfaces which abut against the shelf. The primary
reason for this is that the known shelving does not permit free
flow of air in the region between the shelving and the supported
surfaces of the object.
For similar reasons, the known shelving has not been fully
satisfactory when considered in connection with the hazards of
fire. When objects accidentally ignite and water is directed in the
region of the objects, such as by a sprinkler system, the water is
not permitted to freely reach the regions of the supporting
surfaces of the object, for the same reasons that air cannot freely
reach these surfaces.
The present invention discloses a shelf which enhances the ability
of air and water to flow between a shelf surface and the supporting
surfaces of the objects while the strength or rigidity of the shelf
is not compromised.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a
shelf which does not have the above described disadvantages
inherent in prior art shelves.
It is another object of the present invention to provide a shelf
which is simple in construction and economical to manufacture.
It is still another object of the present invention to provide a
shelf which supports objects a predetermined distance above the
surface of the shelf and is provided with apertures over the
supporting area to enhance circulation of air between the shelf and
objects supported thereon.
It is yet another object of the present invention to provide a
shelf which is provided with a plurality of spaced parallel ribs
and straight rows of apertures between the ribs to increase the
flow of air between the shelf and the object supported thereon to
enhance the drying and/or cooling of the objects supported
thereon.
It is a further object of the present invention to provide a shelf
which supports objects above the upper surface thereof and which is
provided with a plurality of apertures throughout the area to
permit water to reach the supporting surfaces of the objects when
the latter are on fire.
BRIEF DESCRIPTION OF THE DRAWINGS
With the above and additional objects and advantages in view, as
will hereinafter appear, this invention comprises the devices,
combinations and arrangements of parts hereinafter described by way
of example and illustrated in the accompanying drawings of a
preferred embodiment in which:
FIG. 1 is a top plan view of a shelf in accordance with the present
invention, shown with connectors at the truncated corners thereof
suitable for mounting on vertical shelf support members;
FIG. 2 is a cross section of the shelf shown in FIG. 1, taken along
line 2--2;
FIG. 3 is a fragmented enlarged view of a corner of the shelf shown
in FIG. 1;
FIG. 4 is a bottom plan view of the shelf shown in FIG. 1;
FIG. 5 is a fragmented enlarged view of a corner of the shelf shown
in FIG. 4; and
FIG. 6 is a front elevational view of the shelf shown in FIG.
1.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the FIGURES, wherein identical or similar parts
have been designated by the same reference numerals throughout, a
shelf 10 in accordance with the present invention is generally
designated by the reference numeral 10.
The shelf 10 is shown in the FIGURES as being rectangular and
having two pairs of opposing parallel sides or edges. However, it
will become clear from the description that follows, that the
invention is not limited to rectangular shelves and that any shelf
configuration may be utilized while still embodying the essential
features of the present invention.
The shelf 10 is advantageously made of plate or sheet material,
such as sheet metal. Stainless steel, for example, may be utilized.
However, any suitable material which can be formed in the manner to
be described and which has sufficient rigidity to support the items
or objects contemplated, may be utilized.
The rectangular shelf 10 of the present invention has two opposing
major surfaces. The upper or supporting surface is designated by
the reference numeral 12a in FIGS. 1-3.
The shelf is rectangular, as shown, and provided with truncated
corners 14 where connector structures 16 are connected to the
shelf. The connector structures 16 are suitable for mounting the
shelf 10 on vertical support members (not shown) as to be described
hereafter.
Extending about the periphery of the rectangular plate or sheet 12
is a bead 18, which is best shown in FIG. 2. The bead 18 reinforces
the shelf and rigidifies the same for supporting heavy objects
thereon.
A plurality of spaced protuberances in the form of ribs 20 are
provided which rise above the surface 12a. The ribs 20 are parallel
to each other and spaced from each other as shown. In the presently
preferred embodiment, the ribs 20 substantially extend between one
pair of opposing edges or sides of the rectangular sheet and are
parallel to the other pair of opposing edges or sides. It has been
found that the ribs 20 are effective for rigidifying the planar
extent of the shelf when the ribs are straight. However, the
present invention contemplates curved, undulating or other shaped
ribs, which may be used with different degrees of advantage.
Disposed between each two ribs 20, there is provided a plurality of
apertures 22. In the presently preferred embodiment, the apertures
are arranged in rows, a row being provided between each two
parallel ribs. Advantageously, the apertures 20 are rectangular and
have dimensions of the same order of magnitude as the spacing
between two adjacent ribs 20. In this manner, the spaces between
adjacent ribs are substantially open to maximize the amount of air
which can pass or circulate therethrough.
To maximize the ventilation effects and to rigidify or reinforce
the shelf, the ribs and the rows of apertures are advantageously
approximately the same length and each extends substantially across
the width or the length of the shelf, each substantially extending
between the regions of one pair of opposing edges or sides of the
shelf. However, the ribs 20 and rows of apertures 22 advantageously
do not extend to the very edges or sides themselves since this may
somewhat weaken the shelf structure.
Referring to FIG. 2, it is shown that the shelf 10 includes two
folded extensions or panels 24 and 26 which together form a sheet
metal single edge 23. The sheet metal single edge 23 is in the
nature of a peripheral flange which extends about the periphery of
the shelf panel or sheet 12 including the regions of the truncated
corners 14. The edge or flange 23 is provided to reinforce the
shelf. Extending from the panels 26 are tabs 28 which are folded
over into a plane parallel to the sheet 12 and connected to the
latter in any suitable manner, such as by welding.
The connector structures are clamped to the flange 23 in the region
of the truncated corners 14. The connector structures 16, which
include tapered bores 30 therethrough, are clamped to the flange 23
by means of a clamping bar 32 which is disposed on the opposite
side of the flange 23 from that on which the corner structure 16 is
located. Screws 34 extend through the clamping bar 32 and through
holes (not shown) which are provided in the flange 23. The screws
34 are received in threaded holes (not shown) of the corner
structure 16 to thereby permit clamping or mounting of the corner
structures 16 on the shelf.
The tapered bore 30 is suitable for receiving a tapered element
which is complementary to the bore. When the tapered or conical
elements are mounted on vertical support structures with their
diameters decreasing in the upward direction, the tapered bores 30
can receive the tapered elements and abut thereagainst when the
tapered bores are similarly oriented to have reduced diameters in
the same direction. The corner structures 16 are more fully
described in my co-pending application Ser. No. 369,523, filed on
June 13, 1973 for "Shelving with Removable Corner Structures." My
following patents describe vertical shelf support structures,
including tapered elements, which are suitable for supporting
shelves having corner structures as described above: U.S. Pat. Nos.
3,424,111; 3,523,508; 3,604,369; and 3,757,705.
As should be clear from the above description, the shelf 10 of the
present invention permits objects to be placed on the ribs 20 and
maintained at a level above a respective surface 12a. In this
manner, air is permitted to pass through the apertures 22 and
circulate around the objects including along the supported surfaces
thereof. Objects placed on the shelving can thereby be more
effectively dried or cooled. Similarly, a sprinkler system disposed
beneath the shelf may also be made more effective for extinguishing
a fire of an object by permitting water to flow through the
apertures 22 and between the ribs 20.
The present invention is particularly practical because it exhibits
the advantageous properties of rigidity and openness. Normally, the
provision of apertures 20 alone would tend to weaken the shelf
structure. However, this is alleviated in the present invention by
the provision of the ribs 20 which reinforce the shelf throughout
its supporting area. Accordingly, the advantage of openness is not
sacrificed by the desirable characteristic of rigidity and
strength. Such a shelf, as described above, can find many practical
uses, particularly in industrical applications.
Numerous alterations of the structure herein disclosed will suggest
themselves to those skilled in the art. However, it is to be
understood that the present disclosure relates to a preferred
embodiment of the invention which is for purposes of illustration
only and is not to be construed as a limitation of the
invention.
* * * * *