Note: Descriptions are shown in the official language in which they were submitted.
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BAC~GROUND OF THE INV~NTION
Field of the In~ention
This invention reLates generally to storage
receptacles for magnetic tape cassettes, and re particularly
is directed to i~provements in receptacles suitable for
storing magnetic tape cassettes in a manner such that each
cassette is enclosed in an individual compartment or space
and protectet from dirt, tust and the like.
Descri~tio~ ~f the P~ior Art
:
~any types of storage receptacles for magnetic tape
cassettes have ~een proposed. For example, in U.S. ~aeent
3,904,259 issued Sept. 9, 1975 to William S. Hoffmann et al, a
ma~netic tape cassette storage container is disclosed to include a
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~ generally rectangular casing having an opening along one of its
: sides through which the cassette itself is slidably inserted in,
; and removed from the casing. A pivoted door is provided for closing
. the open side of the casing, and a generally U-shaped spring is
; mounted, at its center, against the inner surface of the side wall
of the casing opposed to the open side thereof. During the insertion
of a cassette into the casing, the cassette acts against-the
normally U-shaped spring so as to flex or relatively flatten
the latter, with the result that the spring exerts a force
~-{~ - on the cassette tending to eject the latter from the casing.
Therefore,when Inserting the cassette in the casing, the
-1; cassette has to be manually held within the casing until the
, . ,
~ door is closed and latched in its closed position. The
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foregoing operations inconveniently require the use of two
hands for insertion of a cassette. Furthermore, when the
latch is released to permit opening of the door, the spring
force acting on the cassette ~ay forcibly eject the cassette
completely out of the casing past the open door. Thus, the
; foregoing magnetic tape cassette storage container has
disadvantageous characteristics both when inserting and removing
a oassette. Furthermore, since the cassette is sl;dably
inserted in, and removed from the casing of the container while
- 10 acted upon by the spring, the cassette housing will beco~e
scratched or Qarred in the course of repeated movements lnto
; and out of the casing.
- In another storage container for a magnetic tape
cassette, for example, tS disclosed in U.S. Patent ~o. 3,89g,229,
issued August 12, 1975, to Peter Ackeret, a rectangular casing which
is open at the front side thereof is provided with a drawer which is
: guided for rectilinear movements between a closed position, in which
~` the drawer is contained within the casing with the open side of the
latter being closed by the drawer front, and an opened or extended
20 position in whi~ a cassette can be inserted downwardly in,
or removed upwartly from the extended drawer. A spring is
lnterposed between the drawer and the casing so as to continuously
urge the drawer to its opened or extented position, and a latch
is provided for releasably holting the drawer in its closed
position against the force of such spring. Further, the bot~om
of the drawer has two spaced apart, rig~d tabs projecting
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1042 39 3
upwartly therefrom eo enter the reel hubs of a cassette placed
from above in the drawer for holding the supply and takeup reels
against rotation while the cassette is stored. Although
such storage container provided with a rectilinearly slidable
drewer 2voids so~e of the problems associated with the existing
storage container first described above, in that the cassette
is cradled in the drawer while being inserted in, and removed
from the casing and thus protected from scratching or marring,
the structures provided for guiding the drawer in its rectilinear
sliding movements relative to the casing tend to jam. Further,
when the tr~wer is in its opened position, the insertion or
removal of a cassette inconveniently requires rather co~p~icated
ant precise manipulations of the cassette in view of the rigid
tabs provided for holding the reels against rotation.
In seili anDther existing storage receptacle for
a magnetic tape cassette, for example, as disclosed in U.S.
Patent 3,909,088, issued Sept. 30, 1975, to S. Michael Dennehey, the
~,
receptacle includes a housing constituted by spaced apart, L-chaped
side wall~ having their vertical and horizontal portions connected by
a back wall and a bottom wall, respectively, and a substantially rec-
tangular container which i~ pivotally connected to the housing for
swinging relative to the latter about an axis extending through
a corner of the rectangular casing and through ends of the
horizontal portions of t~ L-shaped side walls of the housing.
~n an openet position of the container in which the latter
extents forwardly from the pivoting axis, the upwardly fàcing
side of the rectangular casing is open for the insertion and
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removal of a cassette therethrough When the container is
pivotally ved to ies closed poSition, the sides thereof
interfit with the adjacent L-shaped side walls of the housing
-~ and the container and housing cooperate to enclose the cassette
therein~ Although the pivotal connection of the container with
Y~ the housing ls advantageous in that it is simple ant not sub3ect
~ to ~indlng or ~amming, no provision is made for preventing
,:
rotaei~on of t~e reels, and consequent loosening of the tape,
hen a cassette is stored in the receptacle
Accordinglyj lt is an ob3ect of th~s inv-ntion to
provi~de an improved storage receptacle for a magnetic tape
c~sJe~te which i3voids the above~eneioned tisadvantages of
the~storage receptacles or containers previously proposed
for that purpose
Mbre~specific-lly, ie is an ob~ect of this invention
eo~provid~a~seor ue receptacle for magneeic tape cassette
hich~facilieates~the insertion and re val of the cassette
Lthnue~the li~elihood of scratching or marring the cassette
ousing;during~such insereion aDt removal, and in which
~20 ~ upo~ the ~nsertion of a cassette in the receptacle, the supply
nd t keup~reels of the cass-tte are held against rotation in
the cassette casing
In accordance with an aspect of this invention,
there i~ prov~ded a torage receptacl~ for a magnet~c tape
;~ :
ca~ett- having a casing cont-inlng rotatable tape supply
~; and takeup reels with reel hubs exposed at openin;gs in the
,. . . .
~ casing said ~torage receptacle compri~ing a housing having
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spaced apart, parallel side walls which, between their forward
edges, deflne a~ opening at the front of the hous~ng; ant
a ho-lder pivotally connectet with the housing for sw~nging
ve~ont thrcugh ~aid front opening of the hausing between
an opened posit~on in which said holder projects forwardly
from said housiqg and a closed position ~n which said holder
closeQ said front opening of the housin~ and is substantia~g
contained in the latter, said holder including side walls
,~ .
. movable between said side walls of the houslng and being spaced
apart for slidable insertion and removal of a cassette between
:;!
;~ said side walls of the holder with the latter in said opened
~:' position, and flexibly resilient stop elements normally projecting
: ~nwartly from one of sait side walls of the holtèr for engaging
said reel hubs of the cassette when the latter is disposed
in the holder for resist$ng turning of the supply and takeup
reels, said flexibly res~ient stop elements being deflectable
by said casing of a cassette out of the path of movement of
the latter between said side walls of the holder during said
20 ~ slidable insertion and removal of the cassette therebetween.
: Th bove, and other objects, features and advantages
; f the invention, will be apparent $n tbe following deta$1ed
description of illustrat$ve om~odiments thereof which is to
x~ be read $n connection with the accompanying drawings.
,-",~
BRl~ DESCRIPTION OF TXE DRAWINGS
~ F$g. 1 $s a perspective iew of a magnetic tape
cassette storage receptacle according to an embodiment of this
.; invent$on, and which is shown in its close.d condition;
- Fig. 2 is a perspective view s~milar to that of Flg. 1,
::~ 30 but howing the storage receptacle ~ its open condition with a
: 11
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104Z393
magnetic tape cassette cradled in the holder of the storage
receptacle;
Fig. 3 is a perspective view of the holder which forms
a part of the storage receptacle shown on Figs. 1 and 2;
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lO~Z393
Fig 4 is a perspective view si~ilæ to that of Fig 3,
but showing the holder partly broken away ant in section;
Fig. 5 is a side elevational view of the storage
receptacle according to this invention with the housing
thereof being shown partly btoken away and in section, ant
with the holder being shown at its opened position;
Fig. 6 is a section-l view of the holder forming
part of a storage receptacle, and which is taken along the line
VI-VI on Fig. 5 for 8howing details of stop elements provided
on~the holder in accordance with this invention;
Fig. 7 iS a sectional view similar to that of Fig. 6,
bùt illustrating the munner iD which the stop elements are
deflected during the insertion of a cassette in the holder;
Figs 8A-8D are perspoctive views respectively showing
;other~forms;oi -stop el _ nts that may be provlded on the holder
of ~ a ~storage~recoptacle~according to this invention;
Fig8. 9,~10 and ll aro porspoctive views, partly
broken;~away and~i~n section, and~respectively shDwing tbe
;holdors of;sèorage~rocoptaclos~according to still other
embodiments~of~the invention; and
Fig. 12 is an onlargod, detail sectional view taken
along tho lino XII-XII on Fig. 11.
DESCRIPTION OF THE ~EFERRED E,~BOD~ENTS
Referring to the drawings in detail, and initially
to Figs. 1 and 2 ther~ f, it will be seen that a magnetic tape
cassette storage receptacle 10 of a type to which this invention
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may be advantageously applied generally comprises a housing ll
and a holder 12 which is pivotally connectet with housing 11
for swinging movement relative to the latter between an opened
position (F~g. 2) in which holder 12 projects forwardly from
housing 11 for receiving and relinquishing a cassette 13, and
a closed position (Fig. 1) in which holder 12 cooperates with
hou~iDg ll for enclosing a cassette cradled in the holder.
The housing ll which is preferably molded of a
suita~lc pla~ic re8in i8 shown to include spaced apart,
par-llel side walls 14a and 14b which are substantially
r~ctangular (Figs. 1,2 and 5), and which are 3Oined together
by a back wall 15, a top wall 16, a shelf or abutment 17 directed
forwardly from the lower end portion of back wall 15, and a
cross piece 18 extenting between the lower end portions of
5Lde wa11s 14a and l4b at the front of housing ll. In the
foregoing~housing 11,~ - vertical}y elongated opening 20 is
def~ned~at the front of the housing between the forward edges
of~side~wlls~ 14a and 14b above cros6 piece 18.
As- shown particularly on~Figs.~3 and 4, the holder
12,~which~i$ also preerably molded of a plastic resin, include~
front wall 21 d~mensioned to close opening 20 in the closed
position of holder 12, a bottom wall 22 directed substantially
t right angles to front wall 21 for defining a corner C at
the bottom of the latter, and spaced apare side walls 23a and
23b d~rected upwardly from bottom wall 22 along the oppo3ite
sides of front wall 21. Tbe side walls 23a and 23b of holder
12 are suitably spaced apart to accommodate a magnetic tape
cassette 13 therebetween, and preferably have upper edges
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104Z393
24a and 2~b, respectively, that are inclined downwardly from
front wall 21 and bevelled inwardly
In order to pivotally connect holter 12 with housing
11 in the illustrated receptacle 10, first laterally aligned
pivot members 25 pro~ect outwardly from side walls 23a and 23b
of holder 12 at substantial distances from front wall 21, and
Jecond laterally aligned pivot members 26 also pro~ect outwardly
from~8ide walls 23a and 23b ant are locatet closer to front
wall~21~than pivot m~mherS 25 at a greater distance upwardly
from bottom wall 22
The side w-lls 23a and 23b of holder 21 are movable
between side walls I4a~ and 14b of housing 11, and such side
walls 14a~:and 14b~ are formet;with arcuate slots 27 therein
wh~ich;~extend~generally~vertically~, and~whLcD are adpated to
sl~idably~réceive~the~first~pivot mèmbers 25 extending from
adjaceDt~side~w Ils~Z3-~aD ~23b~of hold r 12 Further,
SDowD in brokeD~lines~on;~F~g ~5, the~inner surfaces of
~ 14a and~l4b of the housing may~have~recesses 2a
extënding--forwardly in respect~to the slot~s 27 and opening at
he rorwar~edg of ~ide~wall5~14a~and 14b for loosely accom-
odating th~e~second pivot m~e:mbers 26 which project from thè
ad~scent sLde walls 23a nd 23b of holder 12
As~shown particularly;on Fig 5, a leaf spring 29 may
éxt-nd rearwardly from, and be secured to bottom wall 22 of
holter 12 so as to be movable with the lattor Spring 29 is
formed so that, in the closed po9ition of holder 12, the free
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1()4Z;~93
end of spring 29 bears downwardly on the shelf or abutment 17
; provided within the lower portion o`f nousing llo
In order to releasably reatin holder 12 in its
closed position (Fig. 1)l storage receptacle 10 is further
shown to include a latch mechanism 31. Such latch mechanism 31
may include a res~ient tongue 32 formed as a forwardly directed
-~.
extension o~ top wall 16 of housing 11. Tongue 32 is separated
from the ad3acent~top edge portions of side walls 14a and 14b
b~ s 33a and 33b 80 as to permit tongue 32 to be depressed
do~n~ rdly between the top etge portions of walls 14a and 14b,
for examp1e, by the man~al application of pressure on tongue
32 at a pad 34 provided thereon. A latch element 35 (Fig. 2)
is provided~at the free end of resLLient tongue 32 in the form
of~an upwardly directed ra~ed eooth 35 having an upwardly
and rear~rdly sloping front sur~face. The ~ tch 31 i6
completed~by~a~latch~element 36 (~igs. 2,3 and 4) in the
for~of~a~raked tooth tep nding fro~ the back dge of a flange
directed rearw rdly from t~e upper end of front wall 21
of~holder~12.~ ~he-n holder 12 is moved to its closed position
;(Fig.~ latch~tooth 36~at thé top of the holder snaps over
and~engages latch tooth 35 on tongue 32 so as to retain holder
12~in lts closed position. On the other hand, when tongue 32
`is~depressed~by the application of downardly directed pressure
to pad 34, Iatch tooth 35 is moved do~nwardly and thus disengaget
from latch tooth 36 so as to free holder 12 for movement from
its closed position to its opened position.
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As is shown on Fig. 2, the conventional magnetic
tape cassette 13 having a generally rectangular cassette
housing 39 is disposed or cradled between site walls 23a and
~`' 23b of holder 12 with one of the relat~vely long sides of
cassette housing 39 extending along front wall 21, and with a
;relatively short side of the cassette housing resting against
bottom wall 22 of the cassette housing. When holder 12 is h
its opeaed position (Figs. 2 and 5) cassette 13 may be
P~ conveniently wlthdrawn therefrom in the forward and upward
direceion, as indicated by the arrow 40. In order eo ensure
tha`t~flange 37:and latch tooth 36 thereon will not interfere
~ ith such:withdrawal:of the cassette 13 from holder 12, inclined
.. ~ pr ~ ections 41:(Figs. 2 and 5):are formed on front wall 21
a ~s ~ rt~dLstance~below~flange~37 `and act to upwardly deflect
d~acént-~corner~of~cassette hous:ing:39 as the cassette is
from~holder 12.
:In~the;~clo d~pos~ition~of~holder 12 (Fig. 1), pivot
.25;~erga~e:the lower~en~ds:~of~slots 27 for initially
:def ~ ~:-the~`fulcrum~:of~pivotal~;mDvement of holder 12, while
rs~:26 éngage the~upp-r~margins of recesse~ 28 to
;prevene- lifting of~holder 12, and hence disengagemert of latch
too~h~36~from~latch tooth 35, under the ~nfluence of the upwardly
directed~force of spring~29 bearing:on abutment 17.
ivot members 25 are desirably disposed so that the
iulcrum for holder 12 defined by the engagement of such pivot
; members 25 with the lower ends of slots 27 in the closed
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1(~4Z393
posit;on of holder 12 will be space~ rearwardly in respect
to the center of gravity of holder 12 with a cassette in the
latter. Thus, when latch 31 is released by depressing tongue
32, the force of spring 29 in combination with the force of
gravity will cause forward pivotal movement of holder 12 away
from its closed position abo~t the above mentioned fulcrum.
Following the initial pivotal movement of holder 12 from its
clQ~ed pos~t~on, le~f spring 29 will lift off seat or abutment
17 and thus no longer influence the movement of holder 12.
~`; In the course of the forward pivotal movement of
holder 12 away f~ m its closed position, pivot members 26
move downwardly in an arcuate pa~h within recesses 28 and,
when holder 12 attains an intermediate position, pivot members
26 will engage the lower margins of recesses 28. Pivot members
i
26 are desirably located so that, when holter 12 attains the
mentioned intermediate position, the engagement of pivot
members 26 with the lower margins of recesses 28 defines a
fulcrum for further pivotal moement of holder 12 which is
also disposed rearwardly in respect to the center of gravity
of holder 12 with a cassette therein. Therefore, forward
pivotal movement of holder 12 continues about the fulcrum
defined by the engagement of pivot members 26 with the lower
margins of recesses. During such further fo~ard pivotal
movement of holder 12, pivot members 2S move upwardly in arcuate
slots 27 until pivot members 25 en8age the upper ends of the
respective slots and thereby limit the forward pivotal mDvement
-of holder 12 at the opened position thereof (Figs. 2 and 5).
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It will be apparent from the a~ove that, in all
~' positions of holder 12 ranging from its closed position to its
opened position, the fulcru~ for pivotal movement of holter
. .
; ~ 12 is desirably spaced rearwardly from the center of gravity
~ of the h'older with a cassette therein Thus, upon the releae
~, ~
of latch 31, holder 12 is automatically moved by the force
of gravity from its closed position to its opened position
~ .~
3~ ` It will further,be seen that, in the storage receptacle 10,
' the fulcrum for pivotal movement of holder 12 is desirably
hifted forwardly in respect to housingll, in the course of
the~forward pivotal movement of holder 12 from its closed
position to its opened position
. ~' . r ~
As is shf~wn particularly on Fig 9, the conventLonal
etlc tape cassette 13 to be contained in a storage
`receptacIe~according~to this invention is of~the type in
which~the cassette housing~39 contains tape supply and
tahlup reeI~dLspo d in side-by-sLde relatLon and having
reel~hubs~42~expo3ed at op nings 43 in th~ cassette housing
The reel~hubs~are~shown to~;have inwardly directed projections
or~splines~44~by which the respective reels are rotatably
coupled~w~th reel trive shafts of a tape~recording and/or
reprod~ucing~apparatus when the cassette 13 is in use In
accordànce with the present inventionl a storage receptacle
for containing the described cassette 13 is provided with
means by which the reel hubs 42 are held against rotation,
whereby to avoid loosenlng of the tape within cassette housing
. - ,
39 during the storage of cassette 13 in the s~rage receptacle
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Referring now to Fig~; 4,6 and 7, it will be seen
that such means for preventing rotation of the reel hubs of a
.
cassette 13 stored in the receptacle 10 according to this
invention includes flexibly resilient stop elements 45 projecting
` :
inwardly from side wall 23b of holter 12 at locations spaced
~. .
ap~et aLong the latter so as to extend into openings 43 and
- engage the respective reel hubs 42 of a cassette 13 when the
~'~
latter ~s cradled or disposed ~1 holtee 12. In the embodiment
of the i m enti~n shown on Figs. 4,6 and 7, the flexibly
res~ilient stop elements 45 are in the form of tabs normally
trnding at right angles from the opposite ends of an
elongated -trip 46 of a suitably flexibly resilient plastic
resin. ~The strip 46 is shown to be disposed against the outer
surface of aide wall 23b and isecured to the latter at locations
spaced from the ends of strip 46, as by lugs 47 on wall 23b
that are upset in~corresponding holes formed in strip 46
Fure~her,~sIde~wall 23b of holder 12 is formed with spaced
;apàrt~openings 48 throu p which the flexibly resilient stop
ele~ents~or~eabs~45 can~extend into holder 12 from the
respective~ends of~strip 46 As is shown on Fig 7, when a
cassette 13 i8 being slidably inserted in the direction of the
arrow~49 between waIls 23a and 23b of holder 12, the cassette
hDusing 39 deflects stop elements or tabs 45 into openings 48
;with consequent ~lexing of the respective end portions of
strip 46 so tb~tthe resiliently flexible stop elements or
tabs 45 do not interfere with the slidable insertion of cassette
13. When cassette 13 is fully inserted or cradled in holder
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1()42393
12, the openings 43 of its housing 39 register with openin~s
48 in side wall 23b so that stop elements 45 can then return
to their normal positions shown on Fig. 6, in which normal
positions stop elements or tabs 45 extend into the respective
reel hu~s 42 and engage be~we~en projections or splines 44 of
such reel hubs for holding the latter against rotation.
~' Referring now to Figs. 8A-8D, it will be seen
~ that the resiliently flexible stop elements for preventing
,, rotation of the supply and takeup reels of a cassette cradled
in holder 12 may have various fonms other than those described
~ above with reference to the embodiment of Figs. 4,6 and 7.
; `Thus, for exa~ple, as shown on Fig. 8A, an endless loop of
flexibly resilient plastic resin is first flattened, and then
the end portions o the flattened loop are formed to extend
at right angles to the remainder of the flattened loop and
:: :
~ ~ thereby define the tabs or stop elements 45a extending from
:~:
opposlte dnds of the strip 46a. The tabs 45a and strip 46a
on,Fig. 8A are each formed of two layers of the flexibLy
,
resilient material that are movable relative to each other
-~ so as to decrease the resistance o tabs 45a to the insertion
or removal of a cassette in the respective holder. In the
arrangement sh~n on Fig. 8B, the tabs 45b extending from the
~ opposite ends o the flexibly resilient strip 46b are bifurcated
,~ or providet with medial slots to increase the flexibility thereof.
,'' In the arrangement shown on Fig. 8C, the tabs or stop ele~ents
45c extending from the opposite ends of the strip 46c are
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` substantially V-shaped so that, when such ~abs 45c are engaged
: in the reel hubs of a cassette, one or the other of the s~des
~ .
of each V-shaped stop element will be angled in opposition
to the direction of turning of the respective reel for unwinding
the tape therefrom, and thus will provide increased resistance
to such ~nwinding rotttion. In the arrangement shown on Fig. 8D,
each of the tabs or stop elements 45d exterding from the ends
of strip 46d i8 formed with a centra} thickened poreion or
po-t 45'~d for:increasing the rigidity of the tab when engaged
in - rè~pective r~l hub of a ca~8ette.: It will be apparent
that~the arrangements shown on Figs. 8A-8D may be mounted on
the ~older }2 of a storage recepeacle according to this
tion in~the stme manner as~:the stop elements 45 and
iated~serLp 46:described~;above'wLth reference to Figs.
an~ 7. Of~course,; in:~the case of the arr ngement shown
o`n'.~Figs~.~;:8C~and~8D~:in~which~:the: r--pece~ive stop elements
45c~;and~45d~are~relatively:~st~ff, the:~deflection of such stop
out~o};th-~path of a~cassètte~during ;the lnsertlon
'or:rèmoval of~the l~atter~i=s~achieved pr ~ arily by flexing of
~ 'ad~:acent~end~portions~;of the~strip 46c or.46d.
Referring~now:to Fig.~:9, it will be seen that, in
another embodiment:of~this invention, the holder 12A of a
storag:e receptacle which may be otherwise similar to the
previously describet holder 12 ls provided with stop elements
:in the form of clu8ters of flexibly resilient'or rub~ery
pins 145 extending from two circular bases 146a ant 146b
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:~ which are cemented or otherwise suitably secured in spaced
: .
~ circular holes 148a and 148b, respectively, formed in site
.
; ~ wall 23b of the holter. Thus, when a cassette 13 is being
inserted in holder 12A, the clusters of flexibly resilient
.. ` pins 145 are deflected by the cassette housing 39 until the
latter is fully lnserted in holder 12A, whereupon the pins
.
~ 14S r.eturn to their normal positions ant engage in the reel
. .
hubs 43 between the pro3ections or splines 44 of the latter
or:preventing rotation of the reeLs of the cassette 13
cradIed in holder 12A.
: In the holder I2B according to another embodiment
:of thLs invention, the stop elements for preventing rotation
o the;reels of ~cassette cradled in a holder 12B (Fig. 10)
are~again consti`tutet by two clusters of flexibly resilient
pins~245,~which, in~this case, extend from a common base plate
246. Such base~plaee 246~has bevelled edges 246' so as to
bè`-of~dovet-iI cross-section. Side wail 23b of holder 12B
s`~s~own:to have a recess 248 in its: inner surface which is
adapted~to rèceive~base~;plate 246~and which has undercut edges
248' so as~:to:be of complementary dovetail cross-sectinn. Thus,
base plate 246 can be slidably inserted in recess 248 and
retained in~the latter.
In all of the foregoing embod~ments of the invention,
th.e resiliently flexible stop elements have been shown to
be formed independently of the holder 12,12A or 12B~ and thus
can be formed of a plastic resin which ~ more flexible than
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that of the respective holder. However, as shown on Figs. 11
and 12, stop elements 345 for preventing rotation of the reels
in a cassette cradled in a holter 12C may be formet integrally
with the latter. More specifically, it wilL be seen that the
stop elements or tabs 345 formet integrally with side wall
23b of holder 12C are provided with the requisite resilient
flexibility by being ~oined to wall 23b at thin cross-sections
: ~ ~
345'~(Fig. l2~ formlng resilienely flexible hinges between stop
ele~nt~345 and side wall 23b. Further, as shown, the inner
surface:of side wall 23b is preferabl~ formed w~th recesses
;348 a~d~acent stop elements 345 and into which the stop
elements can fold:or nest~when being deflected in response
.eo~ ~the~inser`tion;~of~a~c~sseete 13~into holder 12C.
Although~illustrative embodiments of~this invention
.have-been:~dèscribed:~in~dètail herein with~refer~ence to the
ing drawings,~it is~ to~be~understood that the
iJ~not~limited~to~tnose~ preci-e~embodiments, and
~ "va ~ us~:c ~ es:~and~ w difications: may:be effected therein
skilled:in~ e~art~without:departing from the scope or
spirit of this:~nv~ntion~:as:defined in:the appended claims.
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