U.S. patent number 3,766,759 [Application Number 05/189,363] was granted by the patent office on 1973-10-23 for locking device.
Invention is credited to Marcus M. Artner.
United States Patent |
3,766,759 |
Artner |
October 23, 1973 |
LOCKING DEVICE
Abstract
A locking device for securing electronic audio entertainment
units to an interior support member within an automobile vehicle
has an elongated partially threaded shaft that extends entirely
through the housing of said unit and the support member, and a
threaded bushing means that receives the threaded portion of said
shaft which extends through the support member. The shaft is
lockable within said housing to prevent rotation of said shaft with
respect to said bushing means without first unlocking said shaft
from within said housing, and said bushing means has a portion
which extends into said housing and is adapted to be secured
against rotation with respect thereto whereby rotation of said
bushing means with respect to said shaft is prevented.
Inventors: |
Artner; Marcus M. (Chicago,
IL) |
Family
ID: |
22697007 |
Appl.
No.: |
05/189,363 |
Filed: |
October 14, 1971 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
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71485 |
Sep 11, 0170 |
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Current U.S.
Class: |
70/58; 248/318;
312/245; 70/230; 248/553 |
Current CPC
Class: |
B60R
11/0211 (20130101); B60R 11/0205 (20130101); Y10T
70/5858 (20150401); Y10T 70/5009 (20150401); B60R
2011/0096 (20130101); B60R 2011/0078 (20130101); B60R
2011/0005 (20130101) |
Current International
Class: |
B60R
11/02 (20060101); B60R 11/00 (20060101); E05b
073/00 (); F16b 041/00 () |
Field of
Search: |
;70/58,101,167,230,259
;211/4,7,8 ;248/203,318 ;312/245,265 ;251/33,41.7,41.76,70
;402/2 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Craig, Jr.; Albert G.
Parent Case Text
This is a continuation of application Ser. No. 71,485, filed Sept.
11, 1970 .
Claims
I claim:
1. A locking device for securing electronic audio entertainment
units to an interior support member within an automobile vehicle,
including in combination: a housing for an entertainment unit
having a pair of opposte and spaced walls, a first wall to be
positioned adjacent the support member, and said pair of housing
walls and said support member having aligned apertures therein, an
elongated threaded shaft to be inserted through said apertures in
said pair of housing walls and said support member, means for
locking said shaft within said housing with said shaft fully
inserted to prevent said shaft from rotating with respect to said
housing, and bushing means to threadedly received on said shaft and
adapted to be extended through said support member and said first
wall with said shaft fully inserted, said bushing means having a
widened flange portion opposite said support member from said first
wall to retain said bushing means by said support member, and
further having another portion adapted to be secured against
rotation with respect to said housing whereby rotation of said
bushing means with respect to said shaft is prevented, wherein said
bushing means includes a pair of bushings to be adjacently received
on said shaft, one of said bushings has said widened flange portion
on a non-adjacent end thereof and the other of said bushings has a
portion to be secured to said housing to prevent said other bushing
from rotating with respect thereto, the adjacent ends of said
bushings have arcuate protrusions, respectively, extending toward
the adjacent bushing with said bushings received on said shaft, and
said protrusions interlocked to secure said one bushing against
rotation with respect to said other bushing.
2. A locking device as claimed in claim 1 wherein said adjacent
ends of the bushings are within said housing whereby said adjacent
ends are generally inaccessible to prevent their defeat by forceful
means.
3. A locking device for electronic audio entertainment units to be
mounted in close proximity to an interior support member of an
automobile vehicle, including in combination: a housing for an
entertainment unit having a pair of opposite and spaced walls, one
of said walls to be secured in abutting relation with the support
member to minimize access therebetween, and said pair of housing
walls and said support member having aligned apertures therein, an
open-ended barrel member to be secured to the other of said housing
walls, a portion thereof being mounted internally and within the
confines of said housing with the open ends of said barrel member
in alignment with the aperture in said wall, an elongated shaft
having a lock cylinder on one end portion thereof and a
circumferentially threaded length at the other end portion thereof,
said shaft to be inserted through said aperture in said other wall,
said barrel member, and said aligned apertures in said one housing
wall and said support member, and said lock cyliner lockable within
the portion of said barrel member located within said housing with
said shaft fully inserted to prevent said shaft from rotating with
respect to said barrel member and to prevent access to said lock
cylinder from outside of said housing, and bushing means threaded
to be received on said circumferentially threaded length of said
shaft and adapted to be extended through said support member and
said one housing wall with said shaft fully inserted, said bushing
means having a widened flange portion opposite said support member
from said one housing wall to retain said bushing means by said
support member, and further having another portion interacting with
said one housing wall to secure said other portion against rotation
with respect to said housing whereby rotation of said bushing means
with respect to said shaft is prevented.
4. A locking device for securing equipment units such as, for
example, audio entertainment units to a support member located for
example, in a vehicle, each unit including a first housing wall to
be spaced from the support member and a second housing wall to be
positioned in abutting relation with the support member to minimize
access therebetween, including in combination: an elongated shaft
having a free end portion to be inserted through one of said first
wall and said support member into said unit, elongated bushing
means having a free end portion to be inserted through the other of
said first wall and said support member into said unit, said free
end portion being engageable with said free end portion of said
shaft in the inserted position, a locking arrangement for locking
one of said shaft and said bushing means with respect to one of
said first wall and said support member when said shaft and said
bushing means are in engagement for preventing movement
therebetween and movement with respect to said one of said first
wall and said support member, said locking arrangement including
means operable to locked and unlocked conditions, said means being
located within the confines of said equipment unit between said
first and second housing walls to prevent access thereto from
outside of said unit, the other of said shaft and said bushing
means having a widened flange portion external of said unit and
said support member for retaining the same in an inserted position,
and said free end portion of said bushing means further including
means thereon cooperating with one of said first housing walls and
said support member for preventing movement of said bushing means
relative to said shaft whereby both the selective removal of said
shaft and said bushing means from said mutual engagement and said
inserted position within said unit is prevented.
Description
BACKGROUND OF THE INVENTION
This invention relates to locking devices, and more particularly,
to a locking device for securing electronic type audio
entertainment units to a generally inaccessible rigid support
member within the interior of an automobile vehicle.
Audio entertainment units adapted for mounting within the interior
of an automobile, such as radios and stereo tape players, are often
the object of vandalism and thus, locking devices are needed that
are difficult to defeat during improper removal and yet are readily
removable for servicing and for other proper reasons. Many locking
devices have been devised to accomplish this purpose, but suffer
from one or more of the following disadvantages: (1) the device is
generally exposed whereby it can be defeated by vandal's tools; (2)
the device requires specially designed tools for the installation
and removal thereof; (3) the locking devices are attached to
non-critical operational portions of the entertainment unit housing
which can be removed without destroying the unit; and (4) the
devices are largely constructed of costly hardened metal
alloys.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a
locking device which is readily accessible for proper installation
and removal thereof, but is generally inaccessible for removal by
surreptitious means.
It is another object of the invention to provide a locking device
which can be properly installed and removed from its locking
engagement with said entertainment unit without the use of
specially designed tools.
It is still another object to provide a locking device which is
securable to a generally inaccessible interior support member of
the automobile.
It is yet another object to provide a locking device that uses a
minimum amount of costly alloys and is of low cost and simple
construction.
Further, it is an object to provide a locking device which attaches
to a critical operational portion of the entertainment unit housing
so that the locking device cannot be defeated without first
destroying the entertainment unit.
In a preferred practice of the invention, an elongated partially
threaded shaft is inserted entirely through the thickness of a
housing for an audio entertainment unit and a generally
inaccessible interior support member to be rotatably received by a
threaded bushing means extending from the opposite side of said
support member. The bushing means is comprised of a single-piece
generally tubular bushing having a widened flange portion which
engages the opposite side of said support member to retain said
bushing, and a non-circular portion extending into said housing
which is adapted to be secured against rotation with respect
thereto by a complementarily matched non-circular portion of said
housing to prevent said bushing from rotating with respect to said
shaft. The shaft has a key-actuated lock cylinder on its opposite
end thereof to be locked with respect to said housing with said
shaft fully inserted to prevent said shaft from rotating with
respect to said housing.
In an alternative practice of the invention, the bushing means is
comprised of two separate generally tubular bushings adjacently
received along the threaded portion of said shaft. The two bushings
have non-circular or arcuate protrusions, respectively, on their
adjacent ends which are oppositely disposed along said shaft and
extend toward the adjacent bushing so as to present an interlocked
orientation. One of the bushings is non-rotatably mounted
internally to the housing and the other bushing has its arcuate
protrusion extending internally to the housing so that the
interlocking protrusions are inaccessible and the bushings are
non-rotatable with respect to the housing and to the shaft.
Other objects and advantages of the invention will occur to those
skilled in the art as the invention is described in connection with
the accompanying drawing.
THE DRAWING
FIG. 1 is a pictorial view of an entertainment unit secured to a
support member behind an automobile dashboard by means of a locking
device of the present invention, and showing a portion of a bushing
received on the threaded end of a shaft;
FIG. 2 is a partial cross-sectional view taken along the line 2--2
of FIG. 1;
FIG. 3A is a partial cross-sectional view taken along the line 3--3
of FIG. 2;
FIG. 3B is an alternative partial cross-sectional view similar to
FIG. 3A;
FIG. 4 is a perspective view of the bushing of FIGS. 1-3A;
FIG. 5 is a partial cross-sectional view of an alternative
embodiment of the bushing of FIG. 4 and used with the shaft of the
locking device of the present invention;
FIG. 6 is a perspective view of the elongated shaft of the locking
device, and showing a lock cylinder on one end portion thereof
lockable within an encompassing barrel portion to be secured to the
entertainment unit;
FIG. 7 is a perspective view of a part of the bushing of FIG. 5;
and
FIG. 8 is a perspective view of another part of the bushing of FIG.
5.
DETAILED DESCRIPTION
Referring to the drawings in which the same reference characters
are used to indicate similar parts, FIG. 1 shows an electronic type
audio entertainment unit 10, such as a radio or stereo tape player
or other audio type unit, mounted beneath a dashboard 11 within the
interior of an automobile vehicle, and secured to an interior
support member 13 by a locking device 15. The support member 13 is
shown in FIG. 1 as a U-shaped channel bracket but could be in any
convenient form and constructed of any suitable material
sufficiently rigid to reinforce the dashboard and to provide the
structural integrity necessary for supporting a variety of standard
dashboard attachments.
Additionally, it is desirable that the support member 13 be
generally inaccessible for the purposes of preventing access to the
locking device 15 of the present invention. Further, the
entertainment unit 10 could be mounted within the vehicle other
than beneath the dashboard, the dashboard being used herein only to
illustrate one manner in which the entertainment unit 10 is
securable within the vehicle by the locking device 15.
The entertainment unit 10 is illustrated in the drawing as any
popular type tape player, and typically has a housing enclosure
including a front display-control panel 17, two side walls 18, a
top wall 19 and a bottom wall 21. The internal operational parts of
the entertainment unit 10 are not shown as they are not closely
related to the present invention except from the standpoint of
being electrically insulated therefrom and providing the spacial
requirements for the passage of the locking device 15 entirely
through the housing of the unit 10 in the manner to be fully
described hereinafter. Also, while it is important that the shaft
23 not interfere with the operation of the entertainment unit 10,
it is desirable that the shaft 23 protrude through a main portion
of the unit housing so as not to be readily detachable by forceful
means.
FIG. 2 shows a preferred embodiment of the locking device 15
wherein an elongated shaft or bolt 23 extends entirely through the
housing of the unit 10, through the dashboard 11 and on through the
support member 13 to be engaged opposite the support member 13 by
suitably threaded bushing means such as the single-piece generally
tubular bushing or sleeve 25. The bushing 25 acts as a lock nut for
the shaft 23 much like a standard lock nut-bolt combination type
fastener. The elongated shaft 23 has a lock cylinder 27 on one end
portion thereof which is lockable within the unit housing in a
particular fashion to be set forth in detail, and another end
portion thereof which has a circumferentially threaded length 29
for engaging the bushing 25.
For the purpose of receiving the shaft 23 through the housing, the
top wall 19 and bottom wall 21 are respectively provided with
aligned apertures 31 and 33. Ideally, the top and bottom walls 19
and 21 are parallel and oppositely spaced from each other as shown
in the drawing, and any internal chassis members or plates, such as
indicated at 34 in FIG. 2, are provided with suitable apertures for
the passage of the shaft 23, the essence being to provide an
aligned and continuous passageway through the thickness of the
housing for receiving the shaft 23 of the locking device 15.
In order to complete the provisions for securing the unit 10 to the
support member 13, the support member 13 is provided with an
aperture 35 in a bottom wall 13a, and the dashboard 11 is provided
with an aperture 37. The apertures 35 and 37 are aligned with the
apertures 31 and 33 of the unit 10 to form a continuation of the
passageway through which the shaft 23 passes for engagement with
the bushing 25. Also, any other intermediate members in addition to
the dashboard 11 that are positioned between the unit 10 and the
support member 13 would obviously be provided with similar aligned
apertures.
The lock cylinder 27 is a core-like member having a set of
key-actuated tumblers 38 aligned along the length thereof, which
tumblers are extendable from and retractable into a pair of
suitable lengthwise openings 39 of the cylinder 27, only one of
which is shown in FIG. 6, when actuated by a key 40 inserted into a
standard key-fitting slot 41. The lock cylinder 27 is made an
integral part of the threaded portion 29 of the shaft 23 as by
receiving an adjacent end of the threaded portion 29 internally
thereof and being joined thereto by pin 42. Alternatively, the
cylinder 27 and the threaded portion 29 of the shaft 23 could be
made as a single piece.
With the shaft 23 inserted through the aligned apertures 31, 33, 35
and 37 so as to be engageable by the bushing 25, the lock cylinder
27 is substantially internal to the housing of the unit 10 and is
encompassingly received and lockable within an open-ended barrel
member 45. The barrel member 45 is secured to the bottom wall 21 of
the unit housing, and the lock cylinder is lockable within the
barrel member 45 to provide a means of preventing the shaft 23 from
rotating with respect to the unit housing.
For securing the barrel member 45 to the bottom wall 21, the barrel
member has a circumferentially threaded annular section 46 which is
to be received through the aperture 33, an enlarged head or flange
portion 47 of slightly larger diameter than the diameter of the
aperture 33 for limiting the insertion of the barrel member
therethrough, and a suitably threaded nut 48 adapted to be received
on the annular section 46 with the section 46 extended through the
aperture 33 for tightening against the bottom wall 21 opposite the
head portion 47 thereof. Additionally, the annular section 46 may
be provided with a non-circular periphery on one portion thereof,
and the aperture 33 provided with a complementarily matched
non-circular periphery in order that the barrel member 45 will be
non-rotatable with respect to the unit housing. When so mounted,
the open ends of the barrel member 45 are in alignment with the
aperture 33.
For locking the lock cylinder 27 within the barrel member 45, the
barrel member further includes internal keyways 49 recessed within
and extending lengthwise of the annular section 46, a pair of which
is to be aligned opposite of the openings 39 and the extendable
tumblers 38 of the lock cylinder 27 for receiving the tumblers 38
when the key 40 actuates the tumblers to their extended position.
Other locking configurations could as well be utilized, but the
particular one set forth is simple and effective to prevent the
rotational movement of the shaft 23 with respect to the barrel
member 45 and to the housing of the entertainment unit 10.
For limiting the extent of allowable insertion of the shaft 23 and
lock cylinder 27 into the housing of the unit 10, the free end of
the lock cylinder containing the key slot 41 is shaped as a
slightly enlarged head or flange portion 27a which strikes against
the head portion 47 of the barrel member 45. If desired, the head
portion 47 could be provided with a slight recess within which to
receive all or a portion of the head portion 27a of the cylinder 27
so as to provide a relatively flush mounting in the bottom wall
21.
Prior to locking the shaft 23 within the unit housing, the threaded
portion 29 of the shaft 23 is rotatably engaged by the threaded
bushing 25. For this purpose, the bushing 25 is internally threaded
substantially along its entire length as indicated at 51 in FIG. 4,
but any length of internal threads that would satisfactorily engage
the shaft 23 would suffice. Further, the bushing 25, as shown in
FIGS. 2-4, includes an enlarged head or flange portion 53 of
slightly larger diameter than the diameter of the aperture 35 in
the support member 13 for retaining the bushing 25 by the support
member 13, and an elongated annular section 55 which contains the
internally threaded length 51.
The bushing 25 is designed to be non-rotatable with respect to the
shaft 23 and the housing of the entertainment unit 10 with the
shaft 23 fully inserted through the unit housing and the support
member 13. This is necessary to prevent the detachment of the unit
10 from the support member 13 by simply removing the bushing 25.
Accordingly, the aperture 31 in the top wall 19 of the unit housing
has a pair of oppositely aligned protruding tabs 57, FIG. 3A
extending inwardly from the periphery of the aperture 31, and the
bushing 25 has a pair of open-ended and oppositely aligned grooves
or channels 59 for respectively receiving the tabs 57 whereby the
bushing 25 is prevented from rotating with respect to the shaft 23
and the housing of the entertainment unit 10.
The grooves 59 are shown in the drawing as extending entirely
through the thickness of the annular section 55 but could be
provided at some depth less than the thickness thereof; and
similarly, either one groove 59 or three or more grooves 59 could
be matched to receive a corresponding number of complementary tabs
57. As shown in FIG. 3A, the tabs 57 cooperate with the edge
portions of the grooves 59 to prevent any rotation movement of the
bushing 25 so long as the tabs are received therein.
It is readily apparent that the particular embodiment shown is but
one of many ways in which the bushing 25 could be made
non-rotatable with respect to the housing of the entertainment unit
10, for example, the tabs 57 could be provided on the bushing 25
and the grooves 59 in the periphery of the aperture 31 of the top
wall 19. Any non-circular periphery of the annular section 55 when
matched with a complementary non-circular periphery of the aperture
31 will be effective to yield the advantages of the applicant's
novel locking device 15, for example, as shown in FIG. 3B, the
grooves in the bushing 25 are enlarged and the periphery of the
aperture 31 includes two straight edges to provide the necessary
complementarily matched non-circular fit between opposite and
spaced portions of an alternative bushing 25' and the unit
housing.
When it is not possible to mount the entertainment unit 10 directly
beneath the dashboard 11 due to some obstruction, as is quite often
the case in the crowded interiors of some modern vehicles, the
bushing 25 must have an annular section 55 which is long enough to
extend from the support member 13 to within the unit housing via
the aperture 31 of the top wall 19. Therefore, the length of the
annular section 55 and the lengths of the grooves 59 therein are
variable and can be made to accommodate a range of mounting
distances between the dashboard 11 and the entertainment unit 10.
Any mounting of the unit 10 other than directly beneath the
dashboard 11 will obviously result in a gap between the top wall 19
and the dashboard 11, which gap affords access to the bushing 25
and shaft 23 to expose the locking device 15 to a possible
detachment by forceful means such as cutting with a blade or flame
type device. Therefore, it is necessary to construct the bushing 25
of an extremely hardened metal or metal alloy such as a tool steel
which is not readily susceptible to defeat by such forceful means.
As shown in FIGS. 3A and 3B, the bushing 25 prevents the shaft 23
from being severed or materially weakened.
Additionally, the grooves 59 effectively divide the annular section
55 into a pair of oppositely diposed sections 55a and 55b
comprising portions of a circle. To prevent these sections from
possibly being pried apart enough to defeat the locking device 15
and thus allow access to the relatively vulnerable shaft 23
normally protected by the bushing 25, the sections 55a and 55b are
reinforced by a section of flexible high-strength plastic sleeve or
tubing 61 having a very high ultimate tensile strength. The tubing
61 is provided around the bushing 25 internal to the housing of the
unit 10 when the parts of the locking device 15 are assembled;
additionally, the tubing 61 provides electrical insulation from the
operational parts of the unit 10. Similarly, the length of the
annular section 55 within the housing should be sufficiently
lengthy that the top wall 19 thereof could not be depressed or
deformed enough to disengage the non-circular configuration of the
sections 55a and 55b fom the complementarily matched non-circular
aperture 31 of the top wall 19.
Another obvious modifiaation to the preferred embodiment of the
present invention would be to provide for the apertures 31 and 33
of the top and bottom walls 19 and 21, respectively, to be situated
in two parallel spaced and opposite frame or chassis members (not
shown), as where the entertainment unit 10 would not have
sufficient housing enclosure or the enclosure would be constructed
of some low strength and relatively brittle plastic material.
In assembling the locking device 15 as described thusfar, the
barrel member 45 is first secured to the bottom housing wall 21
within the aperture 33, the tube 61 is slipped over the shaft 23
and the combination thereof inserted through the aperture 33 and
the barrel member 45, the busing 25 is inserted through the support
member 13, the dashboard 11, and the complmentarily non-circular
shaped aperture 31 in the top housing wall 19, and the shaft 23 is
then rotatably threaded into the bushing 25 until the lock cylinder
27 is fully inserted and lockable within the barrel member 45.
An alternative embodiment of the bushing 25 for the locking device
15 is shown in FIGS. 5, 7 and 8 wherein the threaded bushing means
is comprised of two separate generally tubular bushings or sleeves
63 and 65. Bushings 63 and 65 are designated as outer and inner
bushings, respectively due to their position with respect to the
top housing wall 19 in their assembled orientations. The two
bushings 63 and 65 cooperate in a particular manner to comprise the
same type bushing means as does bushing 25 of the preferred
embodiment, namely, the bushings 63 and 65 lock with respect to the
housing enclosure of the entertainment unit 10 and do so internally
of said housing in order to prevent the defeat thereof by forceful
means.
The outer bushing 63 is insertable through the apertures in the
support member 13, the dashboard 11 and the top wall 19 and is
threaded internally, as indicated at 67 in FIG. 7, so as to be
engaged by shaft 23. The bushing 63 has an enlarged head or flange
portion 68 similar to the head portion 53 of the bushing 25, and
has an annular section 69 which has been approximately halved along
a substantial portion of its lengthwise axis to present an arcuate
protrusion 69a having edge faces 69b lying in the outting plane.
The internally threaded length 67 is contained along the inner side
of the arcuate protrusion 69a and within the annular section
69.
The inner bushing 65 has an enlarged head or flange portion 71
which may be shaped as shown in FIG. 8 or it may be any other
convenient shape provided the size thereof is sufficient to contain
suitable means by which the bushing 65 can be stationarily secured
with respect to the housing of the unit 10. As shown in FIGS. 5 and
8, the head portion 71 is provided with apertures 73 for receiving
a corresponding number of mountng posts 75, which posts are made
stationary with respect to the unit housing as by being secured to
the top wall 19 in some convenient manner. The bushing 65 is
slidably mounted on the posts 75.
The inner bushing 65 also includes an annular section 76 extending
from the head portion 71, which annular section 76 is threaded
internally, as indicated at 77 in FIG. 8, and has been
approximately halved along a substantial portion of its lengthwise
axis to present an arcuate protrusion 76a having edge faces 76b
lying in the cutting plane, thus complementarily matching the shape
of the arcuate protrusion 69a of the outer bushing 63.
In assembling the locking device 15 used with the alternative
bushing means as described above, the inner bushing 65 is mounted
within the unit housing on its mounting posts 75 and the outer
bushing 63 is inserted through the support member 13, the dashboard
11 and the top wall 19 so that a substantial portion of the arcuate
protrusion 69a is internal to the unit housing. Next, the shaft 23
is inserted through the bottom wall 21 and the previously secured
barrel member 45 to be rotatably threaded into the inner bushing 65
until the inner end of the shaft 23 enters into the arcuate
protrusion 76a. Thereafter, the shaft 23 is further inserted
causing the bushing 65 to slide along its mounting posts 75 in a
direction toward the top wall 19. The outer bushing 63 is rotated
so that its arcuate protrusion 69a is disposed to receive the shaft
oppositely from the arcuate protrusion 76a, and the shaft 23 is
simultaneously rotatably threaded through the oppositely disposed
arcuate protrusions 69a and 76a to provide a means for holding the
two bushings 63 and 65 in locking engagement.
It is readily apparent that the two adjacently mounted bushings 63
and 65 are prevented from rotational movement with respect to each
other by the engageable interacting faces 69b and 76b, and that the
inner bushing 65 is prevented from rotating with respect to the
unit housing by the mounting posts 75.
The principles of the present invention have been illustrated in
connection with the securement of entertainment units within the
interior of an automobile vehicle but it is at once obvious that
the applicant's locking device can as well be successfully used for
securing a variety of machines, e.g., mobile communication
equipment, to a variety of mounting structures in various
locations.
It is to be understood that while the present invention has been
shown and described with reference to the preferred embodiments
thereof, the invention is not limited to the precise forms set
forth, and that various modifications and changes may be made
therein without departing from the spirit and scope of the present
invention.
* * * * *