U.S. patent number 3,920,299 [Application Number 05/494,455] was granted by the patent office on 1975-11-18 for laboratory module system.
This patent grant is currently assigned to Herman Miller, Inc.. Invention is credited to James O. Kelley, Robert L. Propst.
United States Patent |
3,920,299 |
Propst , et al. |
November 18, 1975 |
Laboratory module system
Abstract
A pair of rectangular sub-frames are joined together in spaced
relationship forming a free standing central core module. The
vertical members of each subframe include latch mechanisms
extending along their length to support components in cantilevered
fashion. The lower portion of the core is enclosed by panels which
enclose electrical and fluid accessories leading to outlets in the
panels. At least a portion of the front and rear panels are
removable to permit free access to the interior of the lower
portion. The entire system is quickly subject to dismantling and
one core module can be quickly connected to another in tandem
forming a multiple system.
Inventors: |
Propst; Robert L. (Ann Arbor,
MI), Kelley; James O. (Spring Lake, MI) |
Assignee: |
Herman Miller, Inc. (Zeeland,
MI)
|
Family
ID: |
23964546 |
Appl.
No.: |
05/494,455 |
Filed: |
August 5, 1974 |
Current U.S.
Class: |
312/209; 312/107;
312/245 |
Current CPC
Class: |
B01L
9/02 (20130101) |
Current International
Class: |
B01L
9/00 (20060101); B01L 9/02 (20060101); A47B
077/00 () |
Field of
Search: |
;312/107,198,196,257SK,279,209 ;108/108 ;52/36 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Gilliam; Paul R.
Assistant Examiner: Sakran; Victor N.
Attorney, Agent or Firm: Price, Heneveld, Huizenga &
Cooper
Claims
The embodiments of the invention in which an exclusive property or
privilege is claimed are defined as follows:
1. A laboratory module system having fluid and electrical
accessories and outlets incorporated therewith comprising, in
combination: a free standing central frame comprised of at least
one pair of first and second rectangular sub-frames interconnected
to each other in spaced relationship, each of said sub-frames
having horizontal top and bottom tube-like members connected to
vertical end tube-like members, one or more of said vertical
members including latch means extending vertically the length
thereof, said central frame having a lower enclosed portion and an
upper exposed portion, said lower enclosed portion having vertical
panel means and a horizontal shelf at the transition of said upper
and lower portions, said shelf extending between said sub-frames,
the fluid and electrical accessories and outlets being enclosed
within said lower portion and having outlet means through at least
one of said panel means or shelf, said vertical panel means having
portions thereof detachable from said central frame permitting
access to the interior of said lower portion of said central frame,
and at least one laboratory components detachably latched to said
latch means.
2. The combination according to claim 1 wherein said latch means
includes interlock means for detachably joining at least two of
said central frames together end-to-end.
3. The combination according to claim 2 wherein one end of said
system is free standing and includes an end wall connected thereto
by said interlock means, said end wall partition means extends
laterally to each side of said module to provide additional free
standing support for said system.
4. The combination according to claim 1 wherein said latch means
extends along each lateral face of said vertical member and
includes access means for receipt of clip means to detachably
anchor said laboratory components to said latch means.
5. The combination according to claim 4 wherein said latch means
comprises a pair of inwardly facing channel members secured
respectively to adjacent vertical members forming an access opening
to each lateral side of said adjacent vertical members, and means
defining aligned slots generally along each edge of said channel
members for receipt of engagement latches extending from said clip
means through said access openings, said aligned slots being spaced
vertically to permit latching of said clip means at selected
vertical heights.
6. The combination according to claim 4 wherein said latch means
includes a hanger bar connectable between spaced vertical frame
members for cantilever support of at least one of said laboratory
components, said components having hanger means fitting over said
bar.
7. The combination according to claim 1 wherein said latch means
extends along each lateral face of said vertical members, and said
laboratory component extends laterally a distance greater than the
spacing of said sub-frames, said component being cantilever
supported by said latch means from either sub-frame in either
lateral direction.
8. The combination according to claim 1 wherein said vertical panel
means includes an upper portion extending the width of each central
frame and affixed to said frame, and a lower portion, said lower
portion comprising said detachable portion.
9. The combination according to claim 8 wherein said bottom
tube-like members include an upstanding flange means and said
detachable portions of said vertical panel means are seated on the
upper surface of said bottom members and indexed against said
flange means.
10. The combination according to claim 9 wherein said detachable
vertical panel means includes a first latch portion engageable with
said flange means and a second latch portion engageable with said
vertical sub-frame members.
11. The combination according to claim 1 wherein said sub-frames
are joined together by cross members, said shelf being positioned
on and connected to at least one of said cross members.
12. A laboratory module system having fluid and electrical
accessories and outlets incorporated therewith comprising, in
combination: a plurality of free standing central frame modules
each joined together end-to-end, each module comprising a
rectangular box-like frame structure of horizontal top and bottom
tube-like members connected to vertical end tube-like members, said
vertical members including latch means extending vertically the
length thereof, each of said structures having a lower enclosed
portion and an upper exposed portion, said lower enclosed portion
having vertical enclosing panels and a horizontal enclosing top
panel at the transition of said upper and lower portions, the fluid
and electrical accessories and outlets being enclosed within said
lower portions and having outlet means through at least one of said
panels, said vertical panels having portions thereof detachable
from said structures permitting access to the interior of said
lower portion of said structures and at least one laboratory
components detachably latched to said latch means.
13. The module system according to claim 12 wherein said system
extends longitudinally and access to said latch means extends
laterally from each side of said vertical members such that said
laboratory components can be supported from either side of said
system.
14. The module system according to claim 13 wherein said upper
exposed portions comprises laterally spaced vertical members and
said laboratory components are supportable by said vertical members
from either side in either lateral direction.
15. The combination according to claim 12 wherein at least one end
of said system is free standing and includes an end wall partition
attached thereto and extending laterally to each side of said
system to provide additional free standing support therefore.
Description
BACKGROUND OF THE INVENTION
The assignee of the subject application through extensive research
and cost has developed two commercially well-known systems of
furniture components with extreme flexibility and utility. One
system relates primarily to vertical panel dividers and space
divider hung furniture components known commercially as "Action
Office". The other system is an integrated coherent system of
fixtures and portable elements providing a new concept in safety,
satisfaction and proficiency for health care facilities known
commercially as "Co/Struc". Particular examples of various aspects
of the two systems referred to above are disclosed in U.S. Pat.
Nos. 3,752,547; 3,734,526; 3,716,282; 3,712,698; 3,712,697;
3,674,230; 3,572,263; 3,550,908; 3,550,892; 3,542,220; 3,517,467;
3,496,889; 3,449,877; 3,430,997; 3,418,765; 3,302,799 and Re.
27,215 all of which are commonly assigned with the subject
application.
The present invention relates to a novel and unique blending of
these two systems to provide a laboratory module system which
reflects the versatility and flexibility inherent in both systems.
Heretofore, laboratory systems of fixtures have not had sufficient
flexibility to meet changing requirements. Any such system requires
fluid and electrical accessory outlets in addition to other fixture
components. Generally adequate systems in this regard were planned
and installed, but these systems were permanent and hence became
prematurely obsolete due to changing needs. The cost of dismantling
prior art installations simply was prohibited with respect to the
type of flexibility desired. With todays space priorities and cost
of building, flexibility and utility become more and more
important. Concurrent with utility is the overall cost itself.
Present installations are almost all customized to fit individual
situations and needs. This approach on a job-by-job basis is
expensive.
Yet another consideration is the overall aesthetic appearance of
the system. This is more and more significant due to continued
pressure on economical use of building space. Heretofore, there has
not been a completely integrated system of laboratory fixtures
which not only have considerable flexibility but incorporate an
extremely aesthetic appearance and continuity. Thus, there is a
need in this art for the type of system described.
SUMMARY OF THE INVENTION
In accordance with the invention, a laboratory system comprises a
free standing central frame core of at least two rectangular
sub-frames joined together in spaced relationship. The sub-frames
are formed of top, bottom and side tubular members, one or more of
the upstanding members having latch means extending generally the
length thereof for receipt and support of one or more laboratory
components. The central frame has an enclosed lower portion and
upper generally exposed portion. Electrical and fluid accessories
are enclosed in the lower portion with appropriate outlets
positioned in enclosing panels. At least a portion of the enclosing
panels are removable to permit quick and easy access to the core
interior of the lower portion.
In narrower aspects of the invention, additional support means are
provided in cooperation with the latch means to permit cantilevered
support of laboratory components from either sub-frame regardless
of the direction of lateral extension of the component.
The type of laboratory components envisioned includes various
shelvings, cabinets, drawers and table tops or the like.
The entire system facilitates flexibility. The central core frame
modules are connectable end-to-end and can extend from a wall as a
divider or be entirely free standing within a defined area. The
modular core concept of the central frame provides an aesthetic
appearing shield for the various electrical and fluid accessories
which terminate an outlets affixed appropriately and aesthetically
to the enclosure portion of the lower portion of the frame. At the
same time, within the concept of the invention, the entire facility
can be quickly and easily dismantled and set up in various
arbitrary design arrangements. Thus, even within a limited space,
if the design criteria changes from time-to-time, the entire system
leads itself to the flexibility desired thereby giving the
component investment complete flexibility avoiding the prior
disadvantage which rendered the system prematurely obsolete due to
the permanency thereof.
Additionally, each system need not be custom made but rather can be
designed from essentially standardized modular frame and frame
elements. The components connected to the frame can also be
generally standardized.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a free standing multiple laboratory
module in accordance with the invention;
FIG. 2 is a fragmentary front elevation view of one of the
sub-frames in accordance with the invention;
FIG. 3 is a side elevation view of the sub-frame illustrated in
FIG. 2;
FIG. 4 is an enlarged fragmentary view of the upper portion of the
sub-frame illustrated in FIG. 3;
FIG. 5 is an enlarged cross-sectional view of the fragmentary
portion illustrated in FIG. 4 taken along line V--V;
FIG. 6 is a fragmentary cross-sectional view taken along line
VI--VI of FIG. 2;
FIG. 7 is a fragmentary perspective view of a portion of the core
frame in accordance with the invention;
FIG. 8 is a broken, fragmentary, front-elevational view showing a
pair of sub-frame modules prior to their being connected in
abutment with one another;
FIG. 9 is a fragmentary plan view of the core modules in the
position shown in FIG. 8;
FIG. 10 is a fragmentary perspective view of hanger bracket and
clip;
FIG. 11 is a perspective view of a load supporting rail exploded
away from the vertical supports of the core module;
FIG. 12 is a fragmentary side elevation view of a drawer supporting
structure suspended by the rail illustrated in FIG. 11; and
FIG. 13 is a fragmentary perspective view of a core module with a
drawer supporting structure supported interiorly.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawings in detail, FIG. 1 illustrates a
laboratory module system 10 comprised of three modules 12, 14 and
16 joined together end-to-end. Each of the modules 12, 14 and 16
include a central core frame 20. For clarity, the central core
frame of module 12 is designated as 20a, the core of module 14 is
designated 20b and that of module 16 is designated 20c. Each module
20a, 20b and 20c is free standing and interconnected to each other
by means which will be described hereinafter. A pair of end panels
22 and 24 are attached to each end of system 10, namely the ends of
core frames 20a and 20c. While each of the core frame assemblies
20a, 20b and 20c are free standing, additional support is provided
by end panels 22 and 24 which extend laterally from the frames.
Referring specifically now to central core frame 20a (FIG. 1), it
is comprised of a pair of spaced rectangular sub-frame assemblies
26a and 28a, preferably comprised of individual tubular members.
Sub-frame 26a (FIG. 2) is comprised of top and bottom members 30a
and 32a and vertical side members 34a and 36a. They are welded or
otherwise interconnected to each other forming a solid rectangular
sub-frame. The sub-frame 28a (FIG. 1) is likewise comprised of a
top member 38a and a pair of vertical side members 40a and 42a. The
bottom horizontal member 43a corresponding to member 32a in FIG. 2
is not shown in FIG. 1 but is illustrated in FIG. 7.
Sub-frame assemblies 26a and 28a are interconnected by lateral
cross members at each of the corners of the sub-frames. The upper
cross support members 44 and 46 are illustrated in FIG. 1 while one
of the lower cross members 48 is illustrated in FIG. 7. With
reference to FIG. 12, a central cross support 50 can also be
utilized. Having described the essential construction of frame 20a,
it will be appreciated that frames 20b and 20c are constructed in
similar fashion. Like reference numerals are utilized in the
drawings for corresponding elements utilizing the appropriate
suffix b or c.
Referring now in detail to FIGS. 2-5 and 8-10, each of the vertical
tubular members 34, 36, 40 and 42 have an exterior of outwardly
facing surface 52 (FIG. 5). Referring to one pair of adjacent
vertical members 36a and 34b, the outer surfaces 52 have a
channel-like member 60a and 60b respectively, affixed thereto by
conventional means such as screws 62 or the like (FIG. 3). Each of
the channel-like members 60a and 60b has a base 64 and upstanding
flanges 66 (FIG. 9) to form a channular recess 65 along the entire
vertical length of each vertical member.
An interlock and latch assembly indicated generally by the
reference numeral 70 comprises an upper forward wedge block 72 and
a lower forward wedge block 74 (FIG. 8) affixed to the outer side
52 (FIG. 5) of each vertical member such as member 36a. A backing
plate 76 (FIG. 5) is utilized for the set screws 78 which secure
the wedge blocks to the vertical members. The wedge blocks are
affixed to the sides of each vertical member within the channular
recesses 65 as indicated in the figures. Each of the wedge blocks
72 or 74 are one piece and comprise a pair of spaced wedge elements
80 and 82 with respect to the upper wedging blocks 72 and 84 and 86
with respect to the lower wedging blocks 74. The wedging surfaces
on each upper block 80 and 82 are upwardly inclining while the
lower wedging surfaces on each lower block 84 and 86 are downwardly
inclining. A space 88 between each adjacent wedging block 80, 82
and 84, 86 is provided for reception of a tie rod 90 which will be
discussed hereinafter. Planer surfaces 92 and 94 (FIG. 4) are
provided on each wedging block and these surfaces, when pulled into
abutment, bear the lateral compression forces of the adjacent core
frames such as 20a and 20b (FIGS. 8 and 9) in a manner to become
apparent hereinafter.
Tie rod or bar 90 is elongated having a lower wedging draw block 96
(FIG. 8) affixed thereto by any conventional means such as a screw
98. The lower wedging draw block 96 has upwardly directed generally
V-shaped wedging surfaces 100 which are adapted to receive the four
lower wedging indexes 84 and 86 of each respective lower wedging
block 74. Affixed to the upper extremity of tie bar 90 by means of
an elongated screw member 102 is the upper wedging draw block 104.
Tie rod 90 may be conveniently fabricated from a piece of metallic
tubing tacked at one extremity as indicated at 106 and the
elongated screw member 102 screwed directly therein. This screw
member or bolt 102 passes through aperture 108 in the upper draw
block 104 and the bolt head 110 shoulders within the suitable
recess therein which will be apparent from FIGS. 8 and 9. A
compression spring 112 is provided to prevent upper wedging block
104 from sliding down on bolt 102 and to assist in assembly and
disassembly of the joint.
The upper draw block 104 is provided with generally V-shaped
wedging surfaces 114 which are adapted to receive the upper wedging
surfaces 80, 82 of the upper wedging blocks 72. When it is desired
to interlock two adjacent respective core frames such as frames 20a
and 20b, they are positioned into abutment as illustrated on FIG. 8
with the interlock assembly 70 positioned between them such that
the upper draw block 102 is above wedging blocks 72 and the lower
draw block 96 is below the lower wedging blocks 74. The screw 102
is then rotated in such a direction as to cause draw blocks 96 and
102 to converge tightly together joining the two core frames as a
single unit. Each side, of course, must be so manipulated, i.e.
vertical frame elements 42a, 40b in addition to 36a, 34b are also
joined together and in the same fashion core modules 20b and 20c
can likewise be attached together.
It should be noted at this point that the exposed ends of each
installation are covered by an additional mating vertical channel
member 60a or 60b. Referring specifically to FIG. 7, channel member
60b is attached to vertical member 34a and an interlock assembly 70
as described previously with respect to FIGS. 8 and 9 joins a
complimentary channel member 60a. Member 60a in turn can be
mechanically connected to end panel 22. As will be appreciated
hereinafter, this end attachment also provides the necessary
latching, which mechanism description follows. Although not
clarified in FIG. 1, the outer end of module 12 and 16 is arranged
in accordance with the foregoing.
Each interlocked frame configuration provides a slot 116 (FIG. 7)
formed by the converging flanges 66. This slot is formed to each
lateral side as shown in FIG. 7. This slot 116 provides a means of
access to the latch bracket 120. Referring specifically to FIG. 10,
a latch bracket 120 and cooperating clip 122 will be described
briefly. The bracket 120 is positioned within channular recess 65
and can be affixed by any conventional means such as screws 62. The
bracket 120 has a forward incline surface or hanger strip 124 and a
rear incline surface 126. These surfaces initiate longitudinally
adjacent the interior bases of flanges 66 and converge toward one
another away from the edge of the vertical frames as shown in FIG.
9. The latch bracket 120 may possibly be interfabricated from steel
or the like by conventional rolling methods.
Each of the surfaces 124 and 126 are provided with a plurality of
aligned slots 130. Thus forwardly inclined surfaces 124 has slots
130 punched therein as do rearwardly inclined surfaces 126. The
resulting configuration provides two generally box-like beams
extending vertically within each of the channular recesses 65, each
of the beams having a sloped exterior surface as viewed from the
front of the panel. Each of the slots are in alignment with respect
to the outwardly and inwardly inclined surfaces 124 and 126 so that
accessory or module component supporting clips 122 (FIG. 10) can be
inserted into adjacent juxtaposed slots in the hanger strips at a
common level for independent support of module components at a
common level.
The retainer clip 122 adapted for utilization in conjunction with
hanger bracket 120 has an accessory restraining section 132 with an
accessory hook or nitch 134 formed therein. The accessory
restraining section 132 is integrally connected by means of a
curved shank section 136 to a pair of engaging hooks 138 and 140.
The hooks are inserted at any desired height, as shown in FIG. 10
and appropriate laboratory components can be suspended thereby.
Although, the operation and construction of the interlock and latch
assembly 70 should be obvious from the foregoing, a more detailed
description and understanding may be achieved from applicant's
earlier invention entitled STRUCTURAL SUPPORT SYSTEM FOR SHELVING,
issued June 30, 1970 as U.S. Pat. No. 3,517,467. This patent is
incorporated by reference herein.
Referring now specifically to FIGS. 11-13, FIG. 11 illustrates a
rail 150 which in turn is secured to the vertical posts of the core
frame assembly such as frame 20a in a fashion similar to that
previously described. A modified hanger clip 152 is utilized for
securing rail 150 to the vertical columns formed from the core
frames. In FIG. 11, one of the interlock and latch assemblies 70 is
shown in exposed fashion with the slots 130 along one of the
rearwardly inclined surfaces 126. Clip 152 is similar in principle
to clip 122 described previously except that it is longer and has
three engaging hooks 153. It also includes an open nitch 154 and
closed nitch 156 essentially similar to a key hole slot for receipt
of headed studs 158 and 160 on each end of rail 150. The opposite
end of rail 150 has a similar clip 152a and likewise configurated
assemblies to permit insertion and removal of rail 150 from the
core frame assembly. Rail 150 includes a curved front face 162
extending upwardly to a lip 164 which runs along the length of rail
150 at the top front edge thereof.
With the rail 150 latched firmly through hanger clips 152, 152a to
the core module, a drawer supporting structure such as that
identified by reference numeral 170 (FIG. 12) can be easily and
quickly removably suspended from rail 150. Structure 170 preferably
includes a pair of spaced sides 172 and 174, the latter not being
shown. A hanger 176 projects rearwardly and downwardly from back
178 such that it can be slipped over lip 164 of rail 150.
Projecting rearwardly from the base of drawer supporting structure
170 are a pair of feet 180 the purpose of which is to abut the
paneling or vertical column 182.
The drawer supporting structure 170 is designed to support the
drawer or shelf or it may be provided with a flipper door and
cover, all of which are conventional within the art.
A more detailed description of the hanger rail 150 and related
hardware can be obtained from applicant's prior U.S. Pat. No.
3,712,698 entitled STRUCTURAL SUPPORT SYSTEM FOR DRAWERS AND THE
LIKE issued Jan. 23, 1973, which patent is incorporated herein by
reference.
Referring back to FIG. 1, each of the central core modules 20a, 20b
and 20c each comprise a lower enclosed portion 180a, 180b and 180c
and an upper exposed portion 182a, 182b and 182c. The lower
enclosed portions such as 180a are fully enclosed by front and rear
panels 184a and 186a, the latter being shown in FIG. 7. The ends
are enclosed either by the adjacent core module such as 20b or the
longitudinally extending end panel 22.
Front and rear panels 184a and 186a are quickly detachable as will
be explained hereinafter. Preferably, the front and rear enclosure
of each core module includes a permanent panel of relatively narrow
height. FIG. 1 illustrates the front permanent panel 188a and 188c
on modules 12 and 16. Module 14 as a tack board 190 positioned in
front of its respective front permanent panel portion 188b. The
permanent panel portion 188 generally include accessory outlets
such as electrical plug outlets 192 illustrated in FIG. 1 or fluid
outlets 194 illustrated on panel 188c of module 16. One of the
advantages of the enclosed portions 180a, 180b and 180c is the
aesthetic enclosure of the plumbing and conduits etc. for the
various electrical and fluid outlets.
Referring to FIGS. 2, 6 and 7, the lower horizontal tubular frame
members 32a and 43a include an L-shaped channel member 200 welded
or otherwise affixed to the upper surface 202 of tubular member 32a
(FIG. 6) at its approximate midpoint. The vertical leg 204 acts as
a stop and index for the detachable panels such as panel 184a. The
panel includes a clip 206 at each lower corner secured thereto by
fasteners 208 or the like, the clip having a protruding lip 210
which fits over the vertical upstanding leg 204 of channel member
200. This not only indexes the bottom of each panel such as panel
186a illustrated in FIG. 7, but also secures it to the bracket 200.
A second latch 212 (FIG. 7) is provided on the vertical frame
elements such as 34a and 40a against which the detachable panels
abut for alignment and a threaded fastener or the like (not shown)
is utilized to secure the panel firmly to each respective core
frame.
The upper or top portion of each lower portion 180a, 180b and 180c
is preferably enclosed by a top panel 216a, 216b and 216c. These
panels provide a work surface and shelving area and can be seated
or attached to the cross-support 50 (FIG. 13). In addition, fluid
accessory outlets such as those illustrated by reference numerals
218 and 220 can be mounted in the tops such as top 216a (FIG. 1)
which also includes a drain 222. Again, all of the plumbing and
other related accessories is completely enclosed within the lower
portion 180a while at the same time, the removable panels permit
quick access to the interior for repair of alteration. It is also
noted that electrical outlets or other accessory fixtures can be
located at the transition of each adjacent module 20a, 20b and 20c
as illustrated by electrical outlet accessories 224 in FIG. 1.
Referring yet to FIG. 1, the upper exposed portions 182a, 182b and
182c provide an open access area to working on the upper tops 216
and include the upper portion of each vertical frame secured
together with interlock and latch assembly 70 in both the forwardly
facing and rearwardly facing directions as described previously.
This permits anchoring of various laboratory components such as the
drawer supporting structures 170a and 170c illustrated in FIG. 1.
As described previously with respect to FIGS. 11-13, the drawer
supporting structures 170 can be conveniently arranged in various
positions as illustrated in the drawings. Turning briefly to FIG.
13, it will be appreciated that with the utilization of rail 150,
the drawer supporting structure 170 can be cantilevered from the
front sub-frame 26a as illustrated in FIG. 1 with respect to drawer
supporting structure 170a or can be recessed and cantilevered from
the rear sub-frame 28a for slight extension beyond sub-frame 26a as
illustrated in FIG. 13. Thus, a drawer supporting structure such as
170, 170a or 170c can be cantilevered to the upper frame portions
of each module from within the rear sub-frame with respect to the
direction of use or from the front sub-frame.
Referring to FIG. 1 again, it will be appreciated that a variety of
laboratory components such as table top 230a, 230b and 230c can be
secured at various heights and further drawer module 232a or a
modification thereof as illustrated by 234b can be suspended
beneath. Appropriate brackets such as illustrated at 236c can be
utilized with clip means interlocking with the latch assembly 70
described previously. Where desired, as indicated previously, a
tack board or accessory panel 190 can also be utilized. The
flexibility and type of laboratory modules desired of course is in
essence unlimited as is their positioning.
In summary then, a completely flexible modular system can be
arranged and rearranged with minimum effort. Each unique system or
installation can be designed and installed utilizing essentially
standardized components and hardware. Thus, from the cost
standpoint alone significant savings are realized over the prior
art.
Although but one embodiment has been shown and described in detail,
it will be obvious to those having ordinary skill in this art that
the details of construction of this particular embodiment may be
modified in a great many ways without departing from the unique
concepts presented. It is therefore intended that the invention is
limited only by the scope of the appended claims rather than by
particular details of construction shown, except as specifically
stated in the claims.
* * * * *