|Numéro de publication||WO2002042586 A1|
|Type de publication||Demande|
|Numéro de demande||PCT/IL2001/001066|
|Date de publication||30 mai 2002|
|Date de dépôt||20 nov. 2001|
|Date de priorité||23 nov. 2000|
|Numéro de publication||PCT/2001/1066, PCT/IL/1/001066, PCT/IL/1/01066, PCT/IL/2001/001066, PCT/IL/2001/01066, PCT/IL1/001066, PCT/IL1/01066, PCT/IL1001066, PCT/IL101066, PCT/IL2001/001066, PCT/IL2001/01066, PCT/IL2001001066, PCT/IL200101066, WO 0242586 A1, WO 0242586A1, WO 2002/042586 A1, WO 2002042586 A1, WO 2002042586A1, WO-A1-0242586, WO-A1-2002042586, WO0242586 A1, WO0242586A1, WO2002/042586A1, WO2002042586 A1, WO2002042586A1|
|Exporter la citation||BiBTeX, EndNote, RefMan|
|Citations de brevets (8), Classifications (4), Événements juridiques (7)|
|Liens externes: Patentscope, Espacenet|
LOCKING DEVICE FOR PORTABLE COMPUTERS
FIELD OF THE INVENTION
The present invention relates to devices for securing portable articles, such
as computers, against theft. More specifically, the invention concerns securing
devices adapted to become arrested against a dedicated slot formed at a side wall
of portable computer casings and a cable adapted to be tied to a stationary object.
BACKGROUND OF THE INVENTION
Theft of portable ("lap-top") computers has become a serious problem.
Several attempts have been made to prevent the simple "snatching" of the
computers off, for example students working in public libraries or in study rooms
during moments of inattention.
The most popular method is to secure a locking device against a dedicated
slot formed (by the manufactures) in the computer casing. A steel cable, extending
from the locking device is tied to a stationary body such as around a table leg.
Among the locking device that were developed are those disclosed in U.S.
Patents Nos. 5,579,657; 5,447,044; 5,327,752 and in PCT Application PCT/IL98/00039 published under WIPO No. 98/32939.
The prior art devices have in common the feature that a T-shaped member
is first inserted into the slot, turned by about 90° which prevents the extraction
thereof, and the following insertion of a pin member that prevents the rotation of
the T-member back to the initial position. The structures developed and the operation thereto, although effective
for their function, were rather complicated because of the basic principle of
operation as described.
It is therefore an object of the invention to propose a locking device
based on a different technical principle, to yield a more simple and
straightforward construction and operation.
It is a further object of the invention to employ a tongs fashion of
movement for attaining the locking against the dedicated slot.
SUMMARY OF THE INVENTION
Thus provided according to the invention is a locking device,
particularly for portable computers, having an external wall formed with a
dedicated slot. The device comprises a casing with a first, fixed, leg projecting from the casing and terminating by a rib portion directed
laterally in a first direction. A second, moveable leg is provided, projecting from the casing and extending along-side of the first leg, terminating by a
rib or engagement directed laterally in a second, generally opposite
direction. The second leg is manipulatable between an unlocking position wherein the rib portions of both legs are positioned in alignment allowing
the insertion thereof into the slot, and a locking position wherein the
second leg is displaced away from the aligned position whereby the rib portions of both legs become arrested within the said slot. Means are
provided for imparting the displacement of the second leg. Preferably, the second leg is pivotally mounted, and drivingly coupled to the
operating member of a push-in type lock via a slidably supported member
formed with a rack of gear teeth meshing with complementary gear teeth
formed around at least a portion of the pivotal mounting of the second leg.
BREIF DESCRIPTION OF THE DRAWINGS
Further constructional features and advantages of the invention will be
more clearly understood in the light of the ensuing description of a preferred
embodiment thereof, given by way of example only, with reference to the
accompanying drawings, wherein-
Fig. 1 illustrates the basic instruction of a locking device featuring the
principles of the present invention, in a ready-to-use position;
Fig. 2 shows the device of Fig. 1 in the snap-open, locking position;
Fig. 3 is a cross-sectional view showing the operating mechanism;
Fig. 4 is view taken along line IV-IV of Fig. 3;
Fig. 5 is sectional view taken along line V-V of Fig. 3;
Figs. 6a-6c show a sequence the locking stages.
Fig. 7a and 7b illustrate (partly) a modified embodiment of the
invention, namely employing a rotary (cylinder) type lock, in the unlocked and
the locked positions, respectively;
Fig. 8 is a front view of the cylinder lock of Figs. 7a and 7b;
Figs. 9a and 9b show a modification of embodiment of Figs. 7a and 7b;
Figs. 10a and 10b illustrate a further embodiment; and Figs. 11a and lib illustrate a still further embodiment of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The locking device generally denoted 10 having a casing 12 is shown
as generally block-shaped, but may of course take any other outer convenient
To the casing 12 a looped tying cable 14 is attached in any known
Further provided are a first, fixed leg 16 and a second, pivotable leg
18, extending in parallel juxtaposition. Leg 16 may be integrally formed with
the casing 12, or rigidly mounted thereto. Leg 18 is pivotable about about
axle 22 (see Figs 3 and 5).
The fixed leg 16 is formed with a nose-like rib portion (or separate
mounted engagement member) 16a (best seen in Fig. 6c) directed
downwards, and the pivotable leg 18 is formed with a similar rib portion (or
engagement member) 18a directed upwards.
The total width W of both ribs lying side-by-side is less than the length
of slot S schematically shown to represent the dedicated slot at a computer C
casing back wall.
As seen in Fig. 2, the locking operation is effected by a tongs-type
relative movement of the two legs after the rib portions 16a and 18a have
been inserted into the slot S (shown in phantom lines). This type of movement is attained in the present example by pushing
home the button 20a of a push-in lock device 20, although other driving
mechanisms may be used, as exemplified in Figs. 7-11.
In more detail and as shown in Figs. 3 and 5, leg 18 is rotatable about
fixed axle 22. The leg 18 is coupled via a section of gear wheel teeth 24, to a
gear rack 26, forming part of a U-shaped carriage member 28. The carriage
is freely slidable within a suitable shaped cavity 30 formed in the casing 12.
Operator pin 20b of the lock 20 is coupled to the carriage member 28, e.g. by
bolt 36 and lock pin 38.
Another, circular cavity 32 is formed to accommodate the body of the push-in lock 20, which is further secured by set screw 34.
The operation of the locking is now self-explanatory in view of Figs.
6a-6c. Firstly, the legs 16 and 18 are freely inserted into the slot S while being in the non-spaced-out position of Fig. 1.
Then, by pushing the button 20a of the locking device 20 home, the
carriage member 28 is forced to the left (Fig. 6c). Upon such movement, gear rack teeth 26, engaged by gear wheel teeth 24, cause rotation of leg 18
clockwise about axle 22, whereby the rib portions 16a and 18a of the
respective legs become spread apart and located behind the computer casing
wall bearing the slot S.
For unlocking the device 10, it is necessary to use the key (not shown)
of the push-in locking device 20, upon which the operator 20b jumps back
into the initial position, imparting thereby linear movement of the carriage 28 and the resulted pivoting of the leg 18 in the opposite direction. Retrieval of
both the legs from the slot S is now enabled.
As seen in Fig. 7a, the push-in locking device 20 of the preceding
embodiment is replaced by a rotary, key-operated lock 120. Carriage 128 is
coupled to rotatable spindle 140 of the lock 120 via screw thread 142 of a
pitch large enough so that rotation by 90° of the cylinder mechanism 142
(Fig. 8) using key 144 (as customary for commercially available locks) will
result in the progress of the carriage 128 to the extent requested for spacing
apart the legs 16 and 18 (not shown).
Fig. 9a shows a variation of the carriage displacement mechanism of Fig.
7a. Hence, the spindle 240 is coupled to the carriage 228 through a
comb-like member 246.
In Fig. 10a, the rotating movement of the spindle 340 is converted into
the linear displacement of the carriage 328 by a worm transmission,
comprising a helical recess 350 engaged by a pin 352.
Fig. 11a shows a cam arrangement comprising a first inclined surface
460 forming part of the spindle 440 engaging a second, complimentary
inclined surface 462 forming part of the carriage 428, one being attracted to
the other for keeping contact with each other by a tension coil spring 464.
In all other respects the operation of the device for computer
securement is the same as described in conjunction with the first above
described embodiment. While the above description contains many specificities, these should
not be construed as limitations on the scope of the invention, but rather as
exemplification of the preferred embodiments. Those skilled in the art will
envision other possible variations that are within its scope. Accordingly, the
scope of the invention should be determined not by the embodiments
illustrated, but by the appended claims and their legal equivalents.
|Brevet cité||Date de dépôt||Date de publication||Déposant||Titre|
|WO1995010680A1 *||13 oct. 1994||20 avr. 1995||Kensington Microware Limited||Computer physical security device|
|WO1996024736A1 *||7 févr. 1996||15 août 1996||Kensington Microware Limited||Computer physical security device|
|WO1998032939A1||26 janv. 1998||30 juil. 1998||Meir Avganim||Portable computers lock|
|US5327752||9 sept. 1993||12 juil. 1994||Kensington Microwave Limited||Computer equipment lock|
|US5447044||25 mai 1994||5 sept. 1995||Manufacturing Technology Resources Inc.||Apparatus for locking a notebook computer on a computer support|
|US5579657||24 août 1995||3 déc. 1996||Makous; Joseph||Anti-theft device for small portable equipment and method|
|US5875657 *||7 mars 1997||2 mars 1999||Qualtec Data Products, Inc.||Lock with removable cable adapter|
|US5983679 *||17 nov. 1998||16 nov. 1999||Micro Security Devices, Inc.||Portable anti-theft locking anchor|
|Classification coopérative||E05B73/0082, E05B73/0005|
|30 mai 2002||AL||Designated countries for regional patents|
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