U.S. patent number 3,891,228 [Application Number 05/397,979] was granted by the patent office on 1975-06-24 for carrier.
This patent grant is currently assigned to Cumberland Corporation. Invention is credited to Vance E. Rhinehart, Floyd G. Yother.
United States Patent |
3,891,228 |
Rhinehart , et al. |
June 24, 1975 |
Carrier
Abstract
A carrier for milk containers or the like with a plurality of
shelves pivotable from a horizontal to a near vertical, storage
position and held in place in the near vertical position by a
spring-loaded handle mounted on the side of the shelf bottom. A
back bar extends along the back of each shelf for preventing
containers from being pushed off the back. Each back bar can be
forced down against a spring urging the bar upward to a position
flush with the shelf for loading the shelf. With all of the shelves
pivoted about a horizontal axis to a near vertical position, the
sides of the carrier can also be folded about a vertical axis
against the carrier back for compact storage and
transportation.
Inventors: |
Rhinehart; Vance E. (Apison,
TN), Yother; Floyd G. (Daisy, TN) |
Assignee: |
Cumberland Corporation
(Chattanooga, TN)
|
Family
ID: |
23573486 |
Appl.
No.: |
05/397,979 |
Filed: |
September 17, 1973 |
Current U.S.
Class: |
280/639; 211/149;
280/79.3 |
Current CPC
Class: |
B62B
3/025 (20130101); B62B 3/006 (20130101); B62B
3/002 (20130101); B62B 2205/33 (20130101) |
Current International
Class: |
B62B
3/00 (20060101); B62b 011/00 () |
Field of
Search: |
;280/36R,47.35,79.3
;211/134,149,153 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Song; Robert R.
Attorney, Agent or Firm: Cushman, Darby & Cushman
Claims
What is claimed is:
1. A carrier for containers or the like comprising:
a frame including first and second hollow, vertical, tubular
members each having a groove on the side facing the other hollow
member,
a plurality of shelves mounted on said frame and each having an
extending surface,
a back bar extending along one side of each of a number of said
shelves,
means mounting each said back bar on said frame so that each said
bar can be moved from a position slightly above said extending
surface of that shelf to a position substantially flush with said
extending surface of said shelf,
means mounted on said frame for urging each said back bar toward
said position slightly above said extending surface including
further members each movable in one of said vertical members and
having a portion extending through said groove and engaging an end
of said back bar, and a spring within each said vertical member and
connected to said further member in that vertical member exerting a
force on that further member to urge that member and that back bar
to said position substantially flush with said extending surface of
said shelf.
2. A carrier as in claim 1 wherein each said shelf is comprised of
a plurality of wire elements extending substantially parallel to
each other and a plurality of tubes having a square cross section
and extending substantially transverse to said wire elements with
each said tube attached to said wire elements at a corner of that
tube.
3. A carrier as in claim 2 wherein said tubes are welded to said
wire elements.
4. A carrier as in claim 1 further including a plurality of wheels
mounted on the bottom of said frame.
5. A carrier as in claim 1 wherein said frame includes means
defining a back portion and side portions extending from opposite
ends of said back portion and further includes means for pivoting
said side portions about a vertical axis from a position extending
substantially transverse to said back portion to a compact position
substantially against said back portion.
6. A carrier as in claim 5 wherein said back and side portions
comprise a plurality of tubular members.
7. A carrier as in claim 1 further including means mounting said
shelves on said frame so that each shelf is pivotable about a
substantially horizontal axis to a near vertical position, and
means mounted on each shelf for latching that shelf in said near
vertical position and for releasing that shelf to permit pivoting
to said substantially horizontal position.
8. A carrier as in claim 7 wherein at least one of said latching
means includes a handle member extending toward the side of said
shelf and a spring member exerting a force on said handle member to
urge the end of said handle member beyond the edge of the side of
said shelf and wherein said frame includes a bracket member for
receiving said end of said handle member when said shelf is in said
near vertical position.
9. A carrier as claimed in claim 1 further including means on the
top shelf for pivoting said top shelf about a horizontal axis near
the center of said shelf so that said top shelf folds to a near
vertical position not substantially extending above the top of said
frame.
10. A carrier as in claim 9 wherein said top shelf is pivoted about
said horizontal axis near the center in a direction opposite to the
direction of pivoting of said top shelf about said horizontal axis
near said end of said top shelf.
Description
BRIEF DESCRIPTION OF THE PRIOR ART AND SUMMARY OF THE INVENTION
The invention relates to improvements in carriers of the type used
for moving and storing a plurality of cartons or containers such as
those used for packaging milk or the like.
Typically today, milk containers or other similar containers for
retail sale are loaded onto the shelves of carriers at the dairy
processing plant or warehouse and when filled, the carriers are
each rolled and directly loaded onto a truck or other vehicle for
transport to the ultimate point of sale, which is usually a
supermarket. At the final destination, the filled or loaded
carriers are rolled directly to a suitable storage area where they
are held without unloading until the articles are placed on display
for ready access by the customer. In modern supermarkets, the fully
loaded carrier may actually be rolled directly into an air-curtain
display case on the sales floor where it remains until all of the
articles have been removed by customers. This technique reduces to
an absolute minimum loading and unloading the carriers and
accordingly, reduces the cost of the items to the public. In those
facilities which do not have a suitable display case for receiving
the carriers, the fully loaded carrier may be rolled to the display
area where a store employee can then unload the containers from the
carrier into suitable display cases.
Particularly, carriers which are designed to be actually rolled
into and form part of the display case usually are provided with a
plurality of shelves which can each be folded or otherwise shifted
out of the way when the shelf is empty to provide easy access to
the containers on the shelf below. Further when the containers have
been completely unloaded, it is desirable, in order to conserve or
reduce the space required for storage and transport of the empty or
unloaded carriers, that they be collapsible or foldable so as to
permit maximum utilization of space during storage and transport
for the return of the carriers to the warehouse or dairy processing
plant where they are again filled and the above-described cycle of
use repeated.
The present invention relates to improvements in carriers of this
type which permit even more efficient operation in loading and
utilization of the carriers. According to one aspect of the
invention as discussed in detail below, each of the shelves is open
at the back and provided with a back-bar which normally prevents
the containers from falling or being pushed off the shelf during
transportation or use at the retail outlet. The back-bars are
mounted for vertical movement against a spring or other structure
so that each of the bars can be pushed down to a position flush
with the associated shelf during automatic loading to permit all of
the shelves to be simultaneously loaded by simply pushing the milk
or other containers directly onto all of the shelves.
Further, the improved carrier of this invention is provided with a
number of shelves which can be pivoted about on an axis at or near
the rear of the shelf from a horizontal to a near vertical
position, permitting direct and easy access to containers on the
shelf below. In order to minimize the vertical space required by
the unit in a refrigerated unit and during storage, the upper shelf
is preferably hinged near the middle so that when it is pivoted up
to its near vertical position, it is also folded so as not to
extend substantially above the remainder of the carrier. Further,
the shelves are preferably each provided with a spring-loaded
handle on the underside thereof which, in the near vertical
position, engages the side of the carrier to hold the shelves in a
position where they will not fall on a customer removing a
container, but from which they can be readily manually
released.
To minimize storage and transportation space, the sides of the
carrier are also pivotably connected to the rear portion of the
carrier at a location near the rear so that the carrier sides can
be folded to a compact position. Rollers are preferably provided on
the bottom of the carrier for rolling the unit both in the normal
loaded position and the folded-up position.
A co-pending application, Ser. No. 323,357, filed Jan. 15, 1973,
describes a carrier of this general type in which the sides can
also be folded up against the back portion about a vertical pivot
to provide more compact storage. This disclosure of this co-pending
application is explicitly incorporated herein by reference.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a front perspective view of the carrier of this
invention.
FIG. 2 shows a back perspective view of the carrier of FIG. 1.
FIG. 3 shows a partial sectional side view along the lines 3--3 in
FIG. 2 illustrating the structure which normally maintains the back
bars of the carrier in the illustrated position, preventing
containers or the like on the shelves of the carrier from being
pushed off the carrier shelves.
FIG. 4 illustrates a partial sectional side view along the lines
4--4 of the back bar and structure for maintaining the back bar in
a position preventing containers from being pushed off the
shelves.
FIG. 5 illustrates a side perspective view showing the upper shelf
being folded to a near vertical position permitting access by a
customer or the like to the shelf below it.
FIG. 6 illustrates a side perspective view with the top shelf fully
folded in its storage position.
FIG. 7 shows a bottom side perspective view illustrating the
support structure for the wheels.
FIG. 8 shows a bottom front perspective view with the bottom shelf
folded upward to the vertical position and illustrating the pivot
for the sides of the carrier to permit folding the sides to a
position near the back for compact storage and transportation.
FIG. 9 shows a perspective view of the spring-loaded latch
mechanism of the top shelf for folding that shelf in a near
vertical position.
FIG. 10 shows the spring-loaded latch mechanism for one of the
other shelves for engaging a vertical bar of the side of the
carrier for folding that shelf in its near vertical position during
storage.
FIG. 11 shows a bottom perspective view with one of the sides of
the carrier folded to the compact storage position and the shelves
folded upward to and held in a near vertical position.
DETAILED DESCRIPTION OF THE DRAWINGS
Reference is now made to FIGS. 1 through 11, which illustrate one
embodiment of the novel improved carrier of this invention. As can
be seen best in FIGS. 1 and 2, the carrier is constructed of a
number of bars of rectangular tubing or the like which are attached
together by welding or any other means to form a frame having an
open back portion and side portions extending outward about
vertical axes near the back portion so as to be foldable back
against the open back to a compact position for storage and
transportation.
The frame includes a pair of hollow, vertical tubular members, 26
and 28, with a plurality of shelves pivotably mounted between
vertical members 26 and 28. In the embodiment of this application,
shelves 30, 32, 34, 36 and 38 are pivotably mounted in the carrier.
It will, of course, be understood that any suitable number of
shelves can be employed if desired. Backbars 40, 42, 44, 46 and 48
are respectively associated with shelves 30, 32, 34, 36 and 38 and
likewise, extend between vertical members 26 and 28, normally at a
position slightly above the level of the associated shelf as
illustrated to prevent containers on the shelf from inadvertently
falling off the back of the shelf or being pushed off the shelf
during storage or use at retail. As can be best seen in FIG. 3,
each such back-bar is movable vertically along slots of vertical
members 26 and 28. For example, in FIG. 3, back-bar 42 is movable
along slot 50 in vertical member 28 and a similar slot in member 26
(not shown).
Within hollow tubular member 28, a spring 54 is mounted exerting an
upward force on member 54, which includes a portion 56 extending
into back-bar 42 and continuously urging back-bar 42 upward to the
upper limit of slot 50 and, in the absence of a larger downward
vertical force, maintaining back-bar 42 in the illustrated
position, slightly above the level of the associated shelf 32.
Similar structure is provided for each of the other back-bars
associated with each of the other shelves of the carrier. If
desired, compression springs can be mounted within the vertical
tubular members below the back bars to exert an upward force. Also,
if desired, member 55 may include slots through which a member
attached to and extending from back bar 42 may be inserted.
To quickly and easily load milk or other containers onto the
carrier, back-bar 42, as well as the other bars, need only be
pushed downward by the exertion of a force greater than that
exerted by spring 54, causing the back-bar 42, as well as the other
back-bars, to move downward until the upper surface of back-bar 42
is roughly flush with the shelf, permitting the milk cartons or the
like to be simply pushed over back-bar 42 and onto the shelf until
the containers are stopped by the rails on the front of the shelf.
Referring to FIG. 1, it can be seen that shelves 30, 32, 34, 36 and
38 are respectively provided each with sets of rails 60, 62, 64, 66
and 68 at the front thereof and these rails are preferably
permanently fixed to the respective shelves.
After all of the shelves have been loaded, preferably
simultaneously, the back-bars can simply be released to
automatically return to the position illustrated in FIG. 3 and
provide protection against the cartons or the like being pushed
over the back of the shelves. Accordingly, the carrier of this
invention can be quickly and easily loaded by machine, while at the
same time, providing a back-bar at the back of each shelf during
its normal storage and use for preventing the milk cartons from
falling off the back of the carrier.
As discussed briefly above, when the carrier is to be used directly
for retail sale of milk in an air-curtain type of refrigerator or
the like, it is desirable to be able to fold the shelves out of the
way when they have been emptied to permit easy access to containers
on the shelf below. Further, it is desirable to fold the shelves up
to a near vertical position to minimize the storage and
transportation space required after the shelves have been
completely emptied.
Reference is now made to those FIGS. 5 and 6, which illustrate the
manner in which the upper shelf 30 is folded to its near vertical
position. As indicated above, it is desirable to provide a
piano-hinge 70 or the like, near the center of the upper shelf so
that it can be folded as it is shifted to the vertical position and
does not extend substantially above the normal height of the
carrier. Since space is normally limited in air-curtain
refrigerators and may be limited in trucks and the like, it is
desirable that the upper shelf not extend substantially above the
normal height of the carrier.
As can be seen best in FIGS. 5 and 6, one side of the carrier is
provided with a square bracket 72, which receives a portion of a
spring-loaded handle, 74, when the shelf 30 has been pivoted to the
vertical position illustrated in FIG. 6. Referring to FIG. 9,
handle 74 is continuously urged inward by spring 76 but can be
pulled outward manually when the shelf is pivoted upward and then
released so that the tubular portion engages square bracket 64 to
hold the shelf 30 in the vertical position. The shelf can be
quickly and easily latched and released manually.
Each of the other shelves is also preferably provided with a
similar handle on its underside for engaging a portion of the side
of the carrier when the corresponding shelf has been pivoted to the
near vertical storage position. Referring to FIG. 10, handle 78 is
associated with shelf 32 and extends into the closed space between
vertical members 80 and 82 as shown in FIG. 6. The remainder of the
shelves similarly extend into the closed areas defined by vertical
member 80 and vertical member 82 as illustrated in FIG. 6.
Also referring to FIG. 10, it will be noted that each of the
shelves is constructed of a number of flat wire elements 90 which
are welded periodically to cross braces consisting of square tubes
such as 92 and 94. The flat wire elements 90 are welded to the
square tubing at the corner edge of the tubing. This configuration
has been found to be particularly satisfactory and to produce a
carrier having excellent strength characteristics.
Reference is now made to FIGS. 2 and 11 which illustrate the manner
in which the carrier can be very easily folded into a compact
position after each of the shelves have been pivoted and secured in
a near vertical position. As can be seen in FIG. 2, each of the
sides of the carrier is pivotable along a vertical axis so as to be
easily pivotable as illustrated in FIG. 10 to a position with each
of the sides engaging the rear of the carrier. The carrier can be
very easily pushed on its four wheels, 100, 102, 104 and 106 in the
compact position or otherwise transported. If desired, one of the
sides can be left open to provide additional stability and the
carrier nested with other carriers also having one side open.
The arrangement for attaching the wheels to the carrier also is
particularly advantageous and is discussed in greater detail in the
co-pending application indicated above as incorporated by reference
herein.
Many changes and modifications in the above-described embodiment of
the invention can, of course, be made without departing from the
scope of the invention. Accordingly, that scope is intended to be
limited only by the scope of the appended claims.
* * * * *