U.S. patent number 3,912,077 [Application Number 05/347,892] was granted by the patent office on 1975-10-14 for cassette holder.
Invention is credited to Witold Krynicki.
United States Patent |
3,912,077 |
Krynicki |
October 14, 1975 |
Cassette holder
Abstract
A cassette holder wherein a container has an interior space
capable of accommodating a cassette and is hingedly connected with
a cover which is maintained in its closed position by a catch
projection on the cover and a catch recess at the container which
receives the catch projection. The wall of the container which is
formed with the catch recess is sufficiently springy and yieldable
so that the operator can depress the catch recess away from the
projection to release the cover. A spring structure in the interior
of the container engages a cassette therein to displace the
cassette to a position extending at least partly outwardly from the
container when the cover is released.
Inventors: |
Krynicki; Witold (Arcadia,
CA) |
Family
ID: |
23365740 |
Appl.
No.: |
05/347,892 |
Filed: |
April 4, 1973 |
Current U.S.
Class: |
206/387.1;
206/817; G9B/23.016 |
Current CPC
Class: |
G11B
23/0233 (20130101); Y10S 206/817 (20130101) |
Current International
Class: |
G11B
23/023 (20060101); B65D 085/672 () |
Field of
Search: |
;206/387,250,804
;220/31S,93,306,315,337,342,343 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Price; William I.
Assistant Examiner: Marcus; Stephen
Attorney, Agent or Firm: Steinberg & Blake
Claims
What is claimed is:
1. A cassette holder comprising a container having an interior
space which is of the same general configuration as but somewhat
larger than a cassette so that a cassette can be accommodated in
said space, said container having an open end through which a
cassette can be introduced into and removed from said space and
said container being closed at all parts thereof except said open
end thereof, a cover having a configuration conforming to said open
end of said container, said cover being hingedly connected to said
container for turning movement with respect thereto between a
closed position covering said open end of said container and an
open position uncovering said open end of said container, said
cover and container respectively having a pair of wall portions, a
catch projection fixedly carried by one of said wall portions, and
the other wall portion being formed with a catch recess to receive
said catch projection for releasably maintaining said cover in its
closed position, said other wall portion which is formed with said
catch recess being springy and having a yieldability sufficiently
great to permit manual displacement of said other wall portion with
said catch recess away from said catch projection to release said
cover, while when the latter is turned from said open to said
closed position said other wall portion will yield until said catch
projection is aligned with said catch recess whereupon said other
wall portion will spring back to its initial position for receiving
said catch projection in said catch recess, said container having
an interior surface opposed to said open end thereof, and spring
means situated at said interior surface of said container for
displacing a cassette in said container to a position where said
cassette is situated partly out of said container extending through
said open end thereof when said other wall portion is manually
displaced for releasing said cover, so that said spring means will
not only displace a cassette to said position located partly out of
said container but will also act through said cassette on the cover
to swing the latter to its open position, while when a cassette is
placed in said container the operator will push the cassette
inwardly in opposition to said spring means and will then swing
said cover to its closed position where said catch projection is in
said recess so that said spring means presses a cassette in said
container against said cover while said catch projection and recess
hold said cover in said closed position thereof in opposition to
the force of said spring means, said open end of said container
being of a rectangular configuration and being defined by end edges
of a pair of opposed narrow end walls and a pair of opposed longer
front and rear walls of said container, said wall portion which is
formed with said catch recess being situated at a central region of
said front wall, and said cover being hingedly connected to said
container for swinging movement with respect thereto about an axis
which is situated adjacent and is parallel to said end edge of said
rear wall, said cover carrying a cam means for urging a cassette in
said container toward said rear wall thereof when said cover is in
its closed position, said cam means including a pair of triangular
cam projections fixed to said cover equidistantly from said catch
projection so that the latter is situated midway between said cam
projections, said front wall being formed with a pair of notches
extending downwardly from said end edge thereof for receiving said
cam projections when said cover is in its closed position.
Description
BACKGROUND OF THE INVENTION
The present invention relates to containers.
In particular, the present invention relates to container structure
which forms a holder for a cassette.
As is well known, it is necessary to provide holders for cassettes
which contain in their interior tapes on which sounds can be
recorded and from which the recorded sound can be played back. Such
cassettes are of a generally rectangular configuration and are
relatively thin. Thus, holders for such cassettes will in general
have a corresponding configuration, but conventional holders of
this type have certain drawbacks. Thus, because of the relatively
delicate nature of such cassettes it is essential that they are
reliably retained in the holders, but on the other hand it is also
highly desirable to be able to easily and conveniently remove the
cassettes from the holders. These two requirements are in conflict
with each other because a structure which will reliably hold a
cassette in the interior of a container will at the same time
render it difficult to remove the cassette from the container. On
the other hand, if a container has a construction enabling the
cassette to be very easily removed from the container, it does not
have a structure which will reliably hold the cassette in the
interior of the container.
Furthermore, conventional cassette holders occupy a relatively
large space so that a considerable volume of space is required at
the present time for accommodating a relatively small number of
cassettes. In addition, the known arrangements render it difficult
to remove from a number of holders which respectively carry
cassettes one particular cassette which may be selected from the
number. A further disadvantage of the known cassette holders
resides in the fact that they do not have a configuration which
gives stability to positioning of the holders on a shelf or the
like from which it is possible to remove a selected cassette.
A further problem encountered with constructions of this type
resides in the fact that because of the delicate nature of the
cassettes they should be stored in such a way that they cannot move
about with respect to the holders. If a cassette is loosely mounted
within a container, then during transportation of the container the
cassette can easily shake around inside of the container and the
cassette can then become easily damaged. Up to the present time
there has been no satisfactory solution to the problem of holding a
cassette in a container in such a way that there can be no relative
movement between the cassette and the container.
Yet another drawback of the known constructions resides in the fact
that they are relatively complex and expensive and are not capable
of being conveniently manipulated in connection with introduction
and removal of cassettes from the holders.
SUMMARY OF THE INVENTION
It is accordingly a primary object of the present invention to
provide a cassette holder which will avoid all of the above
drawbacks.
Thus, it is an object of the present invention to provide a
cassette holder which is relatively inexpensive to manufacture and
sell, which occupies only a small amount of space, only slightly
larger than the cassette itself, and which at the same time can be
placed at any desired location with considerable stability.
A particular object of the invention is to provide a cassette
holder which is indeed capable of reliably containing a cassette in
the interior of the holder but which at the same time permits a
cassette to be removed from the holder with great convenience.
Thus, in this latter connection it is a more particular object of
the present invention to provide a cassette holder which not only
can reliably contain a cassette in the interior of the holder but
which at the same time automatically places a cassette in such
position that it projects beyond the holder when it is desired to
remove the cassette from the holder.
Yet another object of the present invention is to provide a
cassette holder which has very few moving components and which is
composed in its entirety of simple rugged elements which will
operate reliably and which can easily be assembled.
According to the invention the cassette holder includes a container
which has a hollow interior space of the same general configuration
as but somewhat larger than a cassette so that the latter can be
accommodated in this interior space, the container being open at
one end but otherwise being completely closed, so that a cassette
can be introduced into and removed from the container through the
one open end thereof. A cover is hingedly connected to the
container and has a configuration generally conforming to the open
end of the container so that the cover can be turned with respect
to the container between a closed position covering the open end of
the container and an open position uncovering the open end of the
container. This cover carries a catch projection while a wall
portion of the container is formed with a catch recess to receive
the projection for retaining the cover in its closed position, and
the wall portion of the container which is formed with a catch
recess is springy and of sufficient yieldability so that the
operator can displace the catch recess away from the projection to
release the cover for movement to its open position. A spring means
situated in the interior of the container and inner surface thereof
which is opposed to the open end of the container, this spring
means urging a cassette in the container to a position where the
cassette extends in part outwardly beyond the container through the
open end thereof, and when a cassette is placed in a container it
is pushed into the latter in opposition to the spring means
whereupon the cover is placed in its closed position with the catch
projection and recess serving to retain the cover in its closed
position in opposition to the force of the spring means. In this
way the spring means continuously urges the cassette against the
cover while at the same time the cassette is retained in the
container in a highly reliable manner and in a vibration-free
manner.
BRIEF DESCRIPTION OF DRAWINGS
The invention is illustrated by way of example in the accompanying
drawings which form part of this application and in which:
FIG. 1 is a top plan view of a cassette holder according to the
invention;
FIG. 2 is a section elevation of the structure of FIG. 1 taken
along line 2--2 of FIG. 1 in the direction of the arrows;
FIG. 3 is a transverse sectional elevation of the structure of
FIGS. 1 and 2 taken along line 3--3 of FIG. 1 in the direction of
the arrows;
FIG. 4 is a fragmentary transverse sectional elevation taken along
line 4--4 of FIG. 1 in the direction of the arrows;
FIG. 5 is a front elevation illustrating how a cassette projects
through an open end of the container to be easily removed
therefrom;
FIG. 6 is a transverse sectional elevation similar to that of FIG.
3 but showing the cover in its open position and illustrating in
particular how the cover is released;
FIG. 7 is a fragmentary partly sectional elevation taken along line
7--7 of FIG. 1 in the direction of the arrows and illustrating
details of the hinged connection between the cover and
container;
FIG. 8 is an end view of the structure of FIG. 7 as seen from the
left of FIG. 7;
FIG. 9a is a front elevation of another embodiment of a cassette
holder according to the invention with the cover of FIG. 9a being
shown in its open position, a cassette being illustrated in a
position ready to be withdrawn from the holder;
FIG. 9b is a fragmentary end view of the holder of FIG. 9a as seen
from the right of FIG. 9a, showing in particular the structure
which serves to releasably hold the cover in its closed
position;
FIG. 10 is a fragmentary sectional elevation of the lower end
region of a holder, illustrating a different embodiment of a spring
means;
FIG. 11 is a fragmentary section elevation also of the lower region
of a cassette holder showing a still further embodiment of a spring
means of the invention;
FIG. 12 is a fragmentary perspective illustration of a cassette
holder which differs from the other embodiments particularly with
respect to the construction of the cover and the part of the
container which cooperates therewith; and
FIG. 13 is fragmentary longitudinal sectional elevation in a plane
which contains the turning axis of the cover of FIG. 12
illustrating the details of the hinged connection of the embodiment
of FIG. 12.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring to FIGS. 1-4, a cassette holder according to the
invention is illustrated therein in a closed position with a
cassette situated in the interior of the holder. Thus, FIGS. 1-4
illustrate a holder 20 which includes a container 22 and a cover
24. The container 22 and the cover 24 are preferably made of a
plastic which is transparent. this plastic being any well known
plastic material such as a P.V.C., polystyrene, polyethylene, or
the like. In general while the plastic material of the container 22
and cover 24 is completely clear and transparent, at the same time
the wall structure used for the container 22 and cover 24 has a
certain inherent resiliency for the purpose referred to below.
The container 22 has a rear wall 26, an opposed front wall 28, a
bottom wall 30, and a pair of end walls 32 and 34 (FIG. 2). All of
these walls are of rectangular configuration with the end walls 32
and 34 being relatively narrow while the front and rear walls 28
and 26 are considerably longer, all of these walls 26, 28, 32, and
34 having the same height and all extending upwardly from the
bottom wall 30. These different wall portions may be formed from
sheet material and fused together by a suitable solvent or in any
other suitable manner so as to form the container 22 which is
closed at all parts except its top open end which is defined by the
top end edges of the walls 26, 28, 32, and 34. Thus, the open end
of the container 22 will have a configuration conforming to the
inner surface of the bottom wall 30 which is opposed to the open
end of the container. The cover 24 closes the open end of the
container when the cover 24 is in its closed position shown in
FIGS. 1-4, and the cover 24 is hingedly connected to the container
22 in a manner described in greater detail below for turning
movement with respect to the container around an axis which is
situated adjacent and is parallel to the top end edge of the rear
wall 26.
For the purpose of hingedly connecting the cover 24 to the
container 22, the cover 24 has at the region of opposed ends of its
rear edge 36 (FIGS. 7 and 8), enlarged thicker portions 38 capable
of being received in notches 40 which are formed in the rear wall
26 at its top edge adjacent the opposed of this top edge. The
thickened portion 38 at each end of the cover 24 integrally carries
a hinge pin 42, and these hinge pins at the opposite ends of the
cover 24 have a common axis. The pair of end walls 32 and 34
respectively extend upwardly beyond the notches 40 and are formed
at the region of their top ends respectively with a pair of notches
44 of the keyhole configuration illustrated in FIG. 8. Thus, each
notch 44 has an inner circular portion communicating with and
extending from an outwardly tapered portion of the notch 44. Thus,
with this construction it is possible for the pair of hinge pins 42
to be pushed through the tapered outer portions of the notches 44
so as to snap into the inner circular portions thereof to have the
position shown in FIGS. 7 and 8. With this simple structure it is
possible to easily connect the cover 24 to the container 22 for
turning movement with respect thereto about the common axis of the
pins 42 so that the cover 24 can turn between the closed position
shown in FIG. 3 and the open position shown in FIG. 6.
For the purpose of retaining the cover 24 in its closed position,
the cover 24 has a front central wall portion which integrally
carries a catch projection 46 (FIG. 3) which is of a generally
L-shaped cross section. This catch projection 46 is thus in the
form of an angle member which extends through a short distance
along a front edge portion of the cover 24 while being integral
therewith.
The front wall 28 of the container 22 has an upper central wall
portion which is formed with a catch recess 48. This catch recess
48 extends inwardly from an inner surface of an outer recess 50
which is formed in the front wall 28 at the central region of its
top edge. As is apparent from FIG. 5, the recess 50 has the
configuration of part of a circle, while the catch recess 48 is
arranged as illustrated most clearly in FIG. 5.
Because of the springy nature of the sheet material which forms the
front wall 28, this sheet material will yield when the cover 24 is
turned to its closed position so that the thinner wall portion of
the front wall 28 which is formed with the catch recess 48 will
easily yield to permit the catch projection 46 to move toward the
position shown in FIG. 3 whereupon the wall 28 will snap forwardly
so that the catch recess 48 receives the catch projection 46 to
hold the cover 24 in its closed position.
As is apparent from FIGS. 1-4, the cassette C, which is
conventional, is accommodated in the interior space of the
container 22, this space being of the same general configuration as
but somewhat larger than the cassette C. Thus, the cassette C has
at its opposed ends a pair of bosses 52 situated relatively close
to the inner surfaces of the end walls 32 and 34 of the container
22. Also the cassette C has in the region of its bottom edge, as
viewed in FIGS. 2 and 3, outwardly projecting bosses 54 of the
trapezoidal configuration shown in FIG. 2, and as is apparent from
the lower portion of FIG. 3, the distance between the front and
rear walls 28 and 26 of the container 22 is only slightly greater
than the distance between the outer surfaces of the bosses 54. The
rear wall 26 may be provided at its interior with a pair of ribs 56
between which the rear boss 54 at the lower edge region of the
cassette C is located.
According to a further feature of the invention, the container 22
carries at the inner surface of bottom wall 30 a spring means 58
which serves to urge the cassette C outwardly to the position shown
most clearly in FIG. 6. This spring means 58 is in the form of an
elongated leaf spring which is of a generally U-shaped
configuration, as shown most clearly in FIG. 5. The elongated leaf
spring 58 has a central portion 60 which is wider than the
elongated end portions of the leaf spring 58 which directly engage
the cassette in the manner shown most clearly in FIGS. 2 and 5.
This wider central portion 60 of the leaf spring 58 can be fixed in
any desired way to the interior surface of the bottom wall 30 as by
being adhered thereto.
When the leaf spring 58 is required only to support the cassette,
the leaf spring 58 will have the configuration shown in FIG. 5,
while when the cassette C is in the closed container 22, the leaf
spring 58 will have the configuration shown in FIG. 2 so that the
leaf spring 58 opposed the movement of the cassette downwardly into
the container from the position of FIG. 5 into the position of FIG.
2. Thus, the operator will first press the cassette downwardly into
the container in opposition to the spring means and will then close
the cover, the catch projection 46 being received in the recess 48
to hold the cover in its closed position with the spring means
pressing the cassette against the cover, as is apparent from FIGS.
2 and 3.
According to a further feature of the invention, the cover 24
carries a cam means which acts to displace the cassette C
rearwardly so that it will engage the rear wall 26, or more
particularly the ribs 56 thereof. This cam means takes the form of
a pair of triangular cam projections 62 which are fixed to the
cover 24 at the region of the front edge thereof and which are
equidistantly spaced from the catch projection 46. Thus, this catch
projection is situated midway between the cam means formed by the
triangular cam projection 62.
It is to be noted that the front wall 28 also has a pair of inner
ribs 64 situated adjacent the end walls 32 and 34, as shown in FIG.
1, and the clearance between each front rib 64 and the front
surface of the cassette C is apparent from FIG. 3.
Thus, with the structure of the invention when a cassette is pushed
into the container and the cover closed, the cams 62 will engage,
at their bottom inclined edges, the top front edges of the cassette
C so as to displace the latter rearwardly to the position shown in
FIG. 3. In this way the action of the spring 58 serves to prevent
vertical vibratory movement of the cassette by the pressure of the
cassette against the top cover 24, while at the same time the cams
62 hold the cassette directly in engagement with the rear wall 26,
so that in this way vibratory movement between the front and rear
walls is also avoided.
Because of the coaction between the projection 46 and the recess 48
the cassette will be reliably retained in the interior of the
container 22, and because of the above features the cassette will
not be able to shake about inside the container so that it is
reliably maintained therein. When it is desired to remove the
cassette from the container, the operator need only push the front
wall 28 toward the rear wall 26 in the manner shown in FIG. 6, so
as to displace the catch recess 48 inwardly away from the catch
projection 46. As soon as the operator has deflected the front wall
28 through the short distance necessary to locate the recess 48
inwardly beyond the rearwardly directed tooth of the catch
projection 46, the spring 58 will expand, causing on the one hand
the cassette itself to swing the cover 24 to the open position
shown in FIG. 6 and on the other hand bringing about displacement
of the cassette to the position shown in FIGS. 5 and 6 where it
projects outwardly beyond the container through the top open end
thereof. As a result the operator can easily grasp the cassette and
remove it in a very convenient way from the interior of the
container.
Moreover, it will be noted that the container 22 is itself of a
simple rectangular configuration having flat outer surfaces so that
it can be stored with considerable stability on any flat surface
either in an upright or horizontal postion. Moreover because the
holder 20 of the invention is only slightly greater than the
dimensions of the cassette itself, it is possible to accommodate a
large number of holders, with the cassettes respectively situated
therein, in a relatively small space which is not much greater than
the space required by the cassettes themselves.
FIGS. 9a and 9b show a variation of the above structure according
to which the cover 64 is turnably connected to the container 66 for
turning movement with respect thereto about an axis which is
parallel to the top end edge of the end wall 68 of the container 66
which is shown in FIG. 9a. For this purpose the cover 64 has an
enlarged left end provided with a pair of hinge pins 70, and the
front and rear walls of the container 66 are formed with the
keyhole notches to which the pins 70 can be snapped, the left end
wall 68 of the container 66 being somewhat shorter than the left
end wall 32 since this end wall 68 has a top edge situated beneath
the thickened portion of the cover 64 which has the hinge pins
70.
The end wall 72 which is opposite to the end wall 68 and which is
shown in FIG. 9a is formed with a catch recess 78 for receiving a
catch projection 80 fixed to the end of the cover 64 which is
opposite from the hinged end thereof. This catch recess 78 is
formed adjacent the top end edge of the narrow end wall 72 which is
situated between the front wall 74 and the rear wall 76, as shown
in FIG. 9b. This end wall 72 is joined to the front and rear walls
74 and 76 except at the region of the upper portion of the end wall
72. This is shown in an exaggerated manner in FIG. 9b for the sake
of clarity. The opposed side edges of the upper region of the end
wall 72 are situated in engagement with the front wall 74 and rear
wall 76 but are not fused thereto. Thus this upper portion of the
wall 72 forms a springy tongue so that the catch 80 can spring into
the recess 78 while at the same time the upper portion of the wall
72 can be deflected inwardly to release the cover. The part of the
end wall 72 below its upper portion which is yieldable is fused at
its front and rear edges to the front and rear walls 74 and 76 in
any suitable way.
The embodiment of FIGS. 9a and 9b does not have any cams, but
otherwise except for the above differences it is identical with the
embodiment of FIGS. 1-8. Thus in the case of FIGS. 9a and 9b it is
the front and rear walls 74 and 76 which are formed with the
keyhole notches for receiving the hinge pins, and the operator need
only to press the cassette C downwardly from the position shown in
FIG. 9a in opposition to the spring means 58, whereupon the
operator will swing the cover 64 to its closed position where the
catch 80 will be received in the recess 78. When the operator
pushes the upper portion of wall 72 inwardly to displace the recess
78 inwardly from the catch 80, the spring 58 expands to displace
the cassette C upwardly to the position shown in FIG. 9a while at
the same time swinging the cover 64 to the open position thereof
shown in FIG. 9a. Thus, the embodiment of FIGS. 9a and 9b will also
achieve the advantages of the invention.
The embodiment which is shown in FIG. 10 differs from that of FIGS.
1-8 only in that instead of a leaf spring 58, the spring means of
FIG. 10 takes the form of a leaf spring 82 having a pair of opposed
ends 84 engaging the inner surface of the bottom wall 30. Between
these ends 84 the spring means 82 has a curved portion 86 which
forms almost a complete circle and which presses against the bottom
edge of the cassette C in the manner shown in FIG. 10. Thus, this
embodiment will operate in the same way as the other embodiments
except that the spring means will engage only the central bottom
surface region of the cassette C while the spring leaf 58 engages
the opposed ends of the cassette.
According to the embodiment of FIG. 11, the spring means is formed
by a plurality of coil springs 88 which are joined as by any
suitable adhesive to the inner surface of the bottom wall 30. These
springs 88 are arranged in the manner shown in FIG. 11 and will act
in the same way as the spring means 82 or the spring means 58 in
order to achieve the desired results. Otherwise the embodiment of
FIG. 11 is identical with the embodiment of FIGS. 1-8.
According to the embodiment of the invention which is shown in
FIGS. 12 and 13, the container 90 has a front wall 92 and a pair of
opposed end walls 94 which are thinner at the region of their upper
edges than at the remainder of these walls 92 and 94. As a result
the walls 92 and 94 are formed with outer shoulders 96 and 98 which
are directed upwardly toward the end edges of these walls which
define the open end of the container 90 through which the cassette
is introduced and withdrawn. At their thinner upper rear portions
the opposed end walls 94 are respectively provided with the hinge
pins 100 which may be integrally formed with the end walls 94, as
shown particularly in FIG. 13.
The cover 102 of the embodiment of FIGS. 12 and 13 has a front
downwardly directed wall 104 extending from the wall which extends
across the top open end of the container 90 when the cover 102 is
in its closed position. This front wall 104 will engage the
shoulder 96. The cover 102 also has a pair of opposed substantially
triangular end walls 106 which have bottom edges which respectively
engage the shoulders 98 of the pair of opposed end walls 94 when
the cover 102 is in its closed position. When the cover 102 is
turned to its closed position, a catch projection 110 on the cover
has a tooth which is received in the catch recess 112 which is
formed in the thinner upper wall portion of the front wall 92 in
the manner shown in FIG. 12. In addition, the front wall 104
carries the cams 114 which may be identical with the cams 62 and
which serve the same function, these cams being respectively
received in notches 116 which are formed in the front wall 92, only
one of the cams 114 and notches 116 being illustrated in FIG.
12.
The end walls 106 of the cover 102 are capable of being flexed
toward and away from each other at their rear tip regions where
they are respectively formed with openings capable of receiving the
hinge pins 100. Thus, with this embodiment these rear tip portions
of the end walls 106 are flexed apart from each other to snap over
the hinge pins 100 so that in this simple way the cover 102 is
hingedly connected to the container 90. When the cover 102 is swung
to its closed position, the end walls 106 and the front wall 104
will respectively overlap the upper thinner portions of the end
walls 94 and the front wall 92 so that an exceedingly effective
closure is achieved, while at the same time the catch 110 will
cooperate with the recess 112 to hold a cassette in the container
90 in opposition to the spring means which is at the inner surface
of the bottom wall of the container exactly as described above.
With this embodiment also when the operator pushes the upper
central portion of the front wall 92 inwardly toward the rear wall,
the recess 112 will become displaced inwardly from the catch 110 so
that the cover 102 is released to the force of the spring which
pushes the cassette upwardly through the top open end of the
container while at the same time swinging the cover to its open
position shown in FIG. 12.
It is apparent, therefore, that with the above embodiments of the
invention a simple inexpensive cassette holder is provided which on
the one hand makes it possible to reliably hold a cassette in the
interior of the holder while at the same time making it extremely
easy to remove a cassette from the holder. Moreover these holders
of the invention can be readily stored in any available space in a
highly stable manner. Furthermore it will be noted that the
cassettes are maintained within the holders of the invention in
such a way that they cannot shake around therein so that damage to
the cassettes is reliably avoided.
* * * * *