U.S. patent number 3,677,202 [Application Number 05/058,214] was granted by the patent office on 1972-07-18 for storage system.
This patent grant is currently assigned to Walter Kidde & Company, Inc.. Invention is credited to Herbert Young.
United States Patent |
3,677,202 |
Young |
July 18, 1972 |
STORAGE SYSTEM
Abstract
A storage system including a series of spaced, elongated,
load-bearing members, each such member including two spaced
uprights. Each of the uprights include opposed, spaced surfaces,
each such surface having a series of vertically spaced, tongue-like
members extending upwardly therealong. Article supporting means
such as shelves, hanger rods and the like are adapted to be
suspended between two of the load-bearing members, the supporting
means including at least four spaced tongue-like member engaging
means, the spacing between said engaging means, said uprights and
said bearing members being such that each of the engaging means is
engageable with one of the tongue-like members on a different
surface.
Inventors: |
Young; Herbert (West Hartford,
CT) |
Assignee: |
Walter Kidde & Company,
Inc. (Grand Rapids, MI)
|
Family
ID: |
22015406 |
Appl.
No.: |
05/058,214 |
Filed: |
July 27, 1970 |
Current U.S.
Class: |
108/109; 211/153;
108/180 |
Current CPC
Class: |
A47B
57/16 (20130101) |
Current International
Class: |
A47B
57/00 (20060101); A47B 57/16 (20060101); A47b
057/16 () |
Field of
Search: |
;108/108,109,110,111
;211/148US,153US ;52/627 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Zugel; Francis K.
Claims
The embodiments of the invention in which an exclusive property or
privilege is claimed are defined as follows:
1. In an improved article storage system having a series of
elongated load-bearing members adapted to be positioned vertically
in spaced, side-by-side relationship with respect to one another,
each of said members having at least two spaced uprights, each of
said uprights having opposed, spaced surfaces, each of said
surfaces having a series of upwardly extending tongue-like members,
the upper portions of said tongue-like members being spaced from
the plane of the surfaces from which they extend, the improvement
comprising shelf means adapted to be suspended between two of said
load bearing members, said shelf means including an elongated
mid-portion, each end of which is affixed to a rigid end support
extending the width of said shelf, each of said end supports
including a pair of spaced openings for receipt of a pair of
aligned tongue-like members extending from said load bearing
members for suspending said shelf therebetween, said shelf means
including means defining a space between the outer portion of said
end supports and the outer ends of said mid-portion to permit said
tongue-like members to be inserted within said openings so that the
outer surface of said end supports abuts said spaced uprights of
said load bearing members.
2. The improved article storage system according to claim 1 wherein
said mid-portion includes upper and lower spaced support surfaces,
and said end supports include a generally U-shaped channel having a
connecting web with leg portions extending generally perpendicular
therefrom and generally co-planar with said elongated mid-portion,
at least one of said leg portions being affixed to one of said
spaced surfaces, said connecting web being in abutment with said
uprights when said shelf means is suspended from said load bearing
members.
3. The improved article storage system according to claim 2 wherein
the ends of said mid-portion are sandwiched between said leg
portions with the outer extremities of said mid-portion being
spaced from said web.
4. The improved article storage system according to claim 3 wherein
said pair of spaced openings on each of said end supports are
positioned adjacent said connecting web in one of said leg portions
for receipt of said tongue-like members so that said web portion is
in abutment with the surfaces on said uprights from which said
tongue-like members extend.
5. The improved article storage system according to claim 4 wherein
each of said end supports includes a pair of said spaced openings
in each of said leg portions to permit suspension of said shelf
means between said load bearing members with either of said spaced
surfaces facing upwardly.
6. The improved article storage system according to claim 2 wherein
said mid-portion of said shelf means is formed from non-metallic
material and wherein said rigid end supports are formed from
metallic material.
7. The improved article storage system according to claim 6 wherein
the outer extremities of said leg portions of said rigid end
supports are embedded into said non-metallic mid-portions.
8. The improved article storage system according to claim 6 wherein
the outer extremities of said non-metallic mid-portions has a
reduced thickness approximately equal to the thickness of said leg
portions so that the outer surface of said leg portion forms
substantially a planar continuation of the surfaces of said
mid-portions.
9. The improved article storage system according to claim 2 wherein
the uppermost edge of said upper portions of said tongue-like
members are sloped downwardly on each side from the mid-portion
thereof to facilitate the insertion of said tongue-like members in
said end support openings in the event that they are slightly
misaligned.
10. An article storage system comprising in combination: a
plurality of uprights, each of said uprights having a series of
upwardly extending tongue-like members, the base portions of said
members being affixed to the surfaces from which they extend, the
upper portions of said members being spaced from the plane of said
surfaces to which they are affixed; shelf means adapted to be
suspended from said uprights, said shelf means including an
elongated mid-portion having spaced upper and lower support
surfaces, each end of which is affixed to a rigid end support
extending the width of said mid-portion, said end portions
comprising a generally U-shaped channel having a connecting web
with leg portions extending generally perpendicular therefrom, said
ends of said mid-portion being sandwiched between said leg portions
and spaced from said web, said end portions including a pair of
spaced openings for receipt of said tongue-like members of said
uprights, said tongue-like members extending through said openings
and into said space between said connecting web and said
mid-portion extremity.
11. The article storage system according to claim 10 wherein said
pair of spaced openings on each of said end supports are positioned
adjacent said connecting web in one of said leg portions for
receipt of said tongue-like members so that said web portion is in
abutment with the surfaces on said uprights from which said
tongue-like members extend.
12. The improved article storage system according to claim 10
wherein said end supports include spacer means offset from said
openings to physically prevent the outer extremities of said
mid-portions from engaging said web to insure said space for
inserting said tongue-like members into said openings.
13. The improved article storage system according to claim 12
wherein said space means includes a reduced-width section on each
extremity of said end portions of said shelf means, the relative
length and width of said reduced-width portion and said channel
being such that the edges of said leg portions will strike the
boundaries between the reduced-width and non-reduced width sections
of said mid-portions as said channel is positioned thereon to
provide said clearance space.
14. The improved article storage system according to claim 13
wherein the thickness of said leg portions is approximately equal
to the amounts by which the width of said shelf mid-portions are
reduced on either side thereof whereby said leg portions forms
substantially a planar continuation of the surfaces of said shelf
members.
15. The improved article storage system according to claim 12
wherein said spacer means comprises simple means on the interior
surface of said connecting web.
Description
BACKGROUND OF THE DISCLOSURE
This invention relates to storage system and, more particularly, to
such systems including modular components capable of being
assembled in a variety of different configurations.
It has been proposed heretofore in the art to fabricate shelving in
such a manner that it can be assembled at the situs of use in
varying configurations particularly adapted for the particular use
in question. It has been proposed, additionally, to provide such
systems which are capable of being disassembled at least partially
at the situs of use and, thereafter, either moved to another
location or reassembled in a differing configuration particularly
adapted to a differing use. One example of such a system is shown
in U.S. Pat. No. 2,577,138.
The instant invention concerns itself with systems of this type and
the preferred embodiment thereof is particularly adapted for use in
the stock room or back room type of environment. Such shelving and
storage arrangements have been constructed heretofore primarily of
wood and have lacked not only the versatility of the modular-type
of system but, additionally, have been rather expensive to
fabricate because of the amount of labor involved.
OBJECTS AND SUMMARY OF THE INVENTION
It is an object of this invention, thus, to provide a storage
system of the general type described which, while affording the
advantages of all-wooden shelving insofar as the same relate to
structural rigidity, longevity and the like, provides additionally
the convenience and versatility of the modular, knock-down type of
systems.
It is an object of this invention, more particularly, to provide a
system of the type described wherein the various article supporting
surfaces, rods and the like may be quickly and easily assembled
into any desired configuration and, if desirable at some later
date, disassembled and re-assembled in a differing configuration
more suitable to the various articles then being stored.
It is an object of this invention, additionally, to provide such a
system which is extremely stable and rigid and, yet, which may be
easily and quickly assembled or disassembled by non-skilled
labor.
It is yet a further object of this invention to provide a system of
the type described which may be fabricated and assembled relatively
inexpensively and with minimal labor.
These as well as other objects of this invention are accomplished
through the provision of an article storage system comprising a
series of elongated, load-bearing members adapted to be positioned
vertically in space, side-by-side relationship with respect to one
another. Each of the members has at least two spaced uprights, each
of the uprights having a pair of opposed, spaced surfaces. Each of
the surfaces, in turn, have a series of vertically spaced engaging
means therealong, each of the engaging means including an upwardly
extending tongue-like member. The base portions of the tongue-like
members are affixed to the surfaces from which they extend and the
upper portions thereof are spaced from such surfaces. Article
supporting means are provided which are adapted to be suspended
between two of the load-bearing members, the supporting means
including at least four spaced tongue-like member engaging means,
the spacing between said engaging means, said uprights and said
bearing members being such that each of said engaging means on said
supporting means is engageable with a tongue-like member on a
different of said surfaces.
DESCRIPTION OF THE DRAWINGS AND THE PREFERRED EMBODIMENT
The instant invention will be readily understood by those skilled
in the art from a reading of the following specification and a
study of the accompanying figures in which:
FIG. 1 is a perspective view of a storage system section
constructed in accordance with the teachings of this invention;
FIG. 2 is a broken side-elevational view of one of the load-bearing
members, such member being slightly modified from those illustrated
in FIG. 1;
FIG. 3 is a cross-sectional view taken along plane III--III of FIG.
2;
FIG. 4 is a fragmentary perspective view of an upright;
FIG. 5 is a broken, fragmentary perspective view of one of the
rigid shelf supports;
FIG. 6 is a fragmentary, plan view of the shelf support;
FIG. 7 is a front-elevational view, partially in cross section, of
a shelf assembly having the end support illustrated in FIG. 5
affixed thereto;
FIG. 8 is a front-elevational view of a slightly modified form of
shelf-end support structure;
FIG. 9 is a perspective view of a hanger rod support suitable for
use in conjunction with the invention;
FIG. 10 is a fragmentary, front-elevational view, partially in
cross section, of a load-bearing member having a shelf extending
from one side thereof and a hanger rod from the other side
thereof;
FIG. 11 is a front-elevational view of the front skirt; and
FIG. 12 is a side-elevational view of the front skirt.
Referring initially to FIG. 1, there is illustrated a storage
system 10 including two back-to-back sections 10A and 10B. Each
section includes a series of spaced, elongated, load-bearing
members 20 positioned in side-by-side relationship with respect to
one another. Each of the load-bearing members 20, as illustrated
additionally in FIGS. 2 through 4, comprises a pair of spaced metal
uprights 21a and 21b. The uprights include a connecting section 22
having a pair of plate sections 23 extending perpendicularly
therefrom in generally U-shaped fashion and are formed, preferably,
integrally from suitable metallic stock.
The exterior, opposed surfaces 27 and 27' of the plate sections 23
have formed directly therein through a suitable lancing or
die-cutting process a series of vertically spaced, tongue-like
members 25. Each of the tongue-like members 25 includes a base
section 26 extending away from its surface 27 at an acute angle and
thereafter bending upwardly so as to lie generally parallel to but
spaced from the surfaces 27 at upper section 28. Upper section 28,
as will be noted clearly from FIG. 4, preferably includes a rounded
upper edge 35 in the manner illustrated to assist in the
installation of a particular system as will become apparent
hereinafter.
The resulting configuration provides a space 26 between the upper
portion 28 of the tongue-like member and the plane of the surface
27, which space narrows at the base section 26 in converging
fashion to form somewhat of a wedging area between the base section
26 and a member overlying the surface 27 as will be discussed
hereinafter.
As illustrated in FIGS. 1 and 2, the tongue-like members 25 are
spaced preferably relatively close to one another along the
uprights 21, the shelves, hanger rods and the like being movable
vertically from one to the other to achieve the desired vertical
spacing between article supporting members. Ordinarily, of course,
the components will be fabricated such that the vertical position
of each of the tongue-like members on a particular upright will
correspond to one of the tongue-like members on the attached
upright as well as upon the remainder of the uprights in the system
such that the shelves, hanger rods and the like may be positioned
in generally horizontal fashion between any two of the load-bearing
members 20 when desired.
As illustrated best in FIG. 4, the tongue-like members are formed
preferably by die-cutting or lancing the stock utilized in the
fabrication of the upright prior to its being rolled or otherwise
formed in its U-shaped configuration. Such a procedure may be
accomplished easily, as will be readily appreciated by those
skilled in the art and the tongue-like members can be given the
desired configuration as illustrated in FIG. 4 with little
difficulty and with little fabricating expense.
The two uprights 21a and 21b forming a particular load-bearing
member 20 may be maintained in spaced relationship by means of a
continuous sheet spacer 30 such as illustrated in FIG. 1, or by
means of spaced non-continuous spacers 31 such as are illustrated
in FIG. 2 depending upon the desirability of maintaining a solid
boundary between vertical rows of shelves. In either case, the
wooden spacer is preferably routed as indicated at 32 in FIG. 3
along the edges thereof which are to fit into the interior of the
U-shaped uprights 21. Each of the vertical edges of the continuous
spacer or barrier 30 or of the spacers 31 will be so routed and the
uprights affixed thereto such that the openings in their U-shaped
cross section face one another. The uprights may be secured to the
filler 30 or spacers 31 by any suitable means such as screws or,
alternatively, by crimping the edges of the plates 23 to the wood
in a manner similar to be described later in conjunction with FIG.
7.
The spacers 30 or 31 will be installed, ordinarily, at the point of
fabrication of the various system components and the load-bearing
members 20 or 20' will be shipped to the installation situs in
assembled configuration. By following such a procedure, desirable
tolerances can be maintained with ease and, the rather flat nature
of the members when rotated to a horizontal position presents
little shipping problems.
At the situs of installation they may be oriented vertically at the
desired locations and, as illustrated in FIG. 1, have conventional
sway braces 33 affixed thereto in crossing fashion as necessary. If
desirable, additionally, a screen or other barrier may be affixed
to the rear of the units and a top 21 positioned along the upper
extremities thereof. In the embodiment illustrated in FIG. 1, of
course, two of the load-bearing members have been positioned in
aligned relationship with respect to one another along the length
of the entire unit and access to the various article storage
members so formed is gained from opposite sides of the unit.
Referring now additionally to FIGS. 5 through 8, the shelves 40
include a middle section or panel 41 formed from wood or metal. In
accordance with the preferred embodiment of this invention, this
panel is formed from wood and the shelf includes two rigid end
supports 42 (FIGS. 5 through 7) or 42' (FIG. 8). Either of the
embodiments of the end supports 42, 42' are generally U-shaped in
cross section and include a connecting web 43 having legs 44
extending perpendicularly therefrom. Near the base of the legs
(adjacent the connecting web 43) at each extremity and on both
sides of the rigid members 42 elongated apertures or slots 45 are
formed by a suitable punching process. The length of apertures 45
exceeds, preferably, the width of tongue-like members 25 slightly.
It has been found, for example, that if the tongue-like members
have a width of three-quarters of one inch, the slots 45 should be
approximately seven-eighths of one inch in length. With proper
vertical spacing of the members 25, this difference in dimension
permits not only the installation of the shelves with relative ease
but, additionally, allows one or more shelves to be suspended in
slanted fashion to retain bulk goods on the shelves in such a
manner that they will not tend to fall outwardly into the
aisles.
As illustrated specifically in FIG. 10, the instant invention
contemplates the penetration or engagement of the tongue-like
members 25 through the apertures 45 when the shelf is suspended
between four uprights 20. This necessitates, of course, the
provision of a space between the connecting web 43 and the ends of
the wooden members 41. Such provision is accomplished in the
embodiment illustrated in FIGS. 5 through 7 by providing a series
of three dimples 46 extending inwardly into the channels a distance
such that, when the channel is slid onto the extremity of the
shelf, the dimples will arrest its inward movement at the proper
position. The dimples 46, of course, must be offset laterally from
the apertures or slots 45 so that they will not foul penetration of
the tongue-like members 25. The edges of the rigid members 42 may
then be rolled into wood or fiber shelf member as indicated at 48
in FIG. 7 to secure the rigid end members 42 to the shelving member
41.
Alternatively, as illustrated in FIG. 8, the shelf extremities may
be routed as indicated at 47 to receive the rigid members
thereover, the dimensions of the routed area being controlled such
that the edge of the legs 44 contacts the non-routed portion of the
shelf when the proper spacing between web 43 and the shelf
extremity is achieved. The rigid members 42' can thereafter be
affixed to the wooden members by rolling the edges thereof over as
indicated at 48', by screwing or by any other suitable means.
It should be noted that in either of the embodiments illustrated in
FIGS. 5 through 8, it is desirable that the finished shelf 40 be as
nearly as planar as possible along its entire length which, of
course, includes the leg portions 44 of the rigid support members
42 and 42'. Such is accomplished most easily, of course, by the
routing procedure illustrated in FIG. 8, although it is possible to
sufficiently flatten the leg portions 44 during the rolling process
to achieve the desired result.
Referring now additionally to FIG. 9, there is illustrated a hanger
rod support 50 suitable for utilization in the system of the
instant invention. Support 50 includes a rod-receiving aperture 51
having hanging apertures 52a, 52b, 52c, and 52d in the ends
thereof. The vertical spacing between apertures 52a and 52c and
apertures 52b and 52d is equal, of course, to the vertical spacing
between tongue-like members 25 in the system. The horizontal
spacing between apertures 52a and 52b and apertures 52c and 52d,
similarly, is equal to the horizontal spacing between the
tongue-like members 25 on a particular load-bearing member as
utilized in the system. Such dimensions permit the hanger rod
support 50 to be suspended between the uprights 21a and 21b of a
particular load-bearing member, a similar bracket to be so
suspended on the adjacent member, and a pipe or other suitable rod
to be suspended therebetween through the apertures 51. The pipe or
rod 54 (FIG. 10) may be secured into position through any
conventional means such as a cotter key, clip or the like.
The support 50 illustrated in FIG. 9 is particularly adapted for
utilization with the load-bearing member 20' illustrated in FIG. 2
since, of course, there will be no room for the pipe to extend
through the aperture 51 where a solid spacer such as indicated at
30 in FIG. 1 is utilized. To obviate this particular difficulty,
the hanger rod support may be made of a generally boxed
configuration (not illustrated) wherein those portions containing
the hanging apertures 52 are laterally offset from the rod
retaining portion. In such a situation, as will again be readily
appreciated by those skilled in the art, sufficient clearance will
be provided between the face 53 of the support and the solid spacer
30 to permit the rod 54 to slide into apertures 51 and bear against
the edges thereof for support.
Referring now to FIGS. 11 and 12, the instant invention also
contemplates the provision of a dress skirt or kick-plate 60
adapted to be suspended on the uprights 21 between the lowest
shelves of a particular unit and the floor. The front or dress
skirt 60 includes a planar dress member 61 having curled upper and
lower edges 62. Extending rearwardly in perpendicular fashion from
the extremities of the member 61 are hangers 63, the hangers 63
being provided with hook structures 64.
The assembly of any particular storage system necessitates
initially, of course, a plan or design as to heights, widths, shelf
positions, hanger rod positions, etc. Once such a plan has been
completed, the necessary components are either chosen from existing
components or purchased. With the components on hand, the
installers begin by placing two of the load-bearing members 20
illustrated in FIG. 1 (or 20' as illustrated in FIG. 2) in spaced
relationship and suspending one or more shelves, hanger rods or the
like therebetween in the manner described. In the case of a shelf
such as illustrated in FIG. 10, the unit is slid laterally through
an appropriate space 70 (FIG. 2) between the tongue-like members 25
and, when the apertures or receiving slots 45 come into vertical
registry with the four tongue-like members 25, shifted downwardly.
The shelf in question will then be suspended as indicated in FIG.
10 at each of the four corners thereof. The installation of two
such shelves between any two particular load-bearing members 20, of
course, will effect stabilization of the unit.
The rigid end members 42 on the shelves, because of their U-shaped
configuration, contribute significantly to the structural integrity
of the shelf so installed, distributing localized bearing forces on
the shelf fairly equally between the four tongue-like members 25.
The acute angle of divergence of the base sections 26 of the
tongue-like members 25 from the surfaces 27 (see FIG. 10) cause the
connecting web 43 of the shelves (or the hanger rod support) to
wedge or nest into the base of the members 25 and, thus, prevent
direct cantilevered loading of the members 25. Such prevention, of
course, also adds markedly to the structural capabilities of the
system.
In addition, the rounded edge 35 (FIG. 4) of upper sections 28 of
the tongue-like members act as guides when the shelves are
installed. Since it is not always easy to see the tongues when a
shelf is installed, slots 45 are not always aligned exactly with
respect to tongue-like members 25. However, the sloped or curved
edges 35 guide the tongues into slots 45 in the event that they are
slightly misaligned.
If, for one reason or another, it is desired to create a storage
bin or area having a width equal to more than the modular width
being utilized, such can be accomplished easily as indicated in
FIG. 1 by providing a load-bearing member 20a having a height equal
to the combined heights of dress strip 60 and the shelves 40a. The
shelves 40a can then be suspended in elevated relationship with
respect to the floor between the two regular-height members 20 on
either side thereof and the shorter bearing member 20a in the
conventional fashion described heretofore.
Once the desired number of load-bearing members 20 have been
initially positioned in the desired configuration through the
insertion of shelves, hanger bars or the like, the wire netting may
be applied to the rear thereof if desired. It may be desirable at
this time, additionally, to add the sway braces 33 at regular
intervals along the back of the structure to further stabilize the
system. At this time, or at a later time, another row of storage
shelves 10B behind row 10A as shown in FIG. 1, may be positioned in
back-to-back relationship with the partially or completely
assembled row 10A so as to minimize necessary aisle space. Upon the
addition of the unit 10B, suitable dress strips 13 may be added to
the exterior ends thereof and, additionally, horizontal braces 11
and 12 added if necessary.
The dress strips 60 are positioned in the manner shown preferably
prior to installation of the bottom shelves. This is accomplished,
with reference to FIG. 12, by merely sliding them rearwardly over
the two lower tongue-like members on adjacent uprights 21a and
moving them downwardly such that the portions 65 slide into the
space between the tongue-like members in their respective surfaces
in a manner similar to that illustrated in conjunction with member
50 in FIG. 10.
After a particular installation has been completed, should it
become desirable to change the position of shelves, etc., such may
be easily accomplished by merely shifting the shelves upwardly and
withdrawing them through the space 70 between the vertically
adjacent tongue-like members 25. It should be noted, in this
regard, that because apertures or slots 45 are provided on both
sides of the members 42, a shelf may be slid into position with
either side facing up and with either end facing back. This
particular facet of the invention, in addition to aiding in
installation of a particular system, permits one side of a shelf to
be utilized for articles which might leave debris or the like and
the other side of the shelf, when turned over, to be utilized for
articles requiring a clean surface.
The instant invention, as noted previously, contemplates the
fabrication of the shelves, uprights, etc., for particular systems
in modular widths and lengths so as to permit at least partial if
not complete interchangeability of the various components. In the
example illustrated in FIG. 1, two of the load-bearing members have
sections 14 extending above the top boundary 21 to permit stacking
of large articles therebetween. While these particular components
may contribute to the efficacy of the system in a particular
storage environment and, thus, be necessary, they are at least to
some extent "custom" in nature. Despite the presence of these
particular members, however, all of the shelves remain
interchangeable, and certain of the load-bearing members may be
removed if desirable and replaced with shorter members such as 20A.
The system, thus, in short, remains extremely flexible despite the
presence of two rather "non-standard" components embodied
therein.
The rigidity of the present system permits units to be cascaded
atop one another. This may be accomplished, for example, by
interlocking vertically aligned uprights 21 through the utilization
of a channel or the like fitting over the exterior surfaces thereof
and containing hooks adapted to engage two or three of the
tongue-like members upon each of the vertically aligned uprights.
The integrity of the system permits, additionally, the suspension
of structural members on the tongues 25 across aisles and the
placement atop thereof of suitably supported grating or the like.
In this case, of course, the system will become a highly versatile,
self-supporting storage system having two or more separate floors
of storage area, the grating permitting access to the upper
floors.
The selective utilization of metal and wood combinations as
described herein adds not only to the structural rigidity of the
system but, additionally, to the ease with which the various
components may be assembled and disassembled. It reduces
significantly, additionally, the amount of fabrication labor
involved in the manufacture of the units, thus affording a
functionally superior but less expensive unit when compared with
all-wood installations.
The system permits, however, the use of all metal shelving which
may take the form of a metal shelf surface having a depending skirt
about its entire periphery. The vertical measurement of the skirt
should exceed the height of tongue-like members 25 and the width
thereof should be less than the space 29 at least at the points of
engagement. The shelf so constructed may then be supported from the
uprights in a fashion similar to that already discussed by nesting
the skirt portion thereof between the tongue-like members 25 and
the surfaces 27.
While a preferred embodiment of this invention along with minor
modifications thereof has been described in detail, it will be
readily appreciated by those skilled in the art that other
embodiments may be conceived and fabricated without departing from
the spirit and scope of this invention. Such other embodiments are
to be deemed as included within the scope of the following claims
unless these claims, by their language, expressly state
otherwise.
* * * * *