Special receptacle or package – With structural locking modification
Patent
1991-07-11
1994-03-01
Gehman, Bryon P.
Special receptacle or package
With structural locking modification
206309, 206387, 206449, 292107, 292209, 312 956, G11B 3304, B65D 8557
Patent
active
052899144
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND
The invention relates to a safety device for cassettes and more particularly for such a cassette for a compact disc, a cassette tape (audio and video tape) or the like, which comprises two hingedly interconnected rectangular cassette halves, said safety device being intended for mounting on the outside of the cassette encircling the cassette to prevent opening thereof and being provided with a lock member for locking engagement with the cassette, having magnetically operated latch means.
Safety devices of this type are used in the retail trade for blocking the cassette so that it cannot be easily opened to prevent theft of the compact disc or the cassette tape, or such theft in any case cannot take place without considerable difficulties. Several different embodiments of the safety device have been developed during recent years, and an intense development work is still going on for the purpose of making the device cheap considering the fact that it has to be used in a great number at each shop and thus it is important to keep the total costs at the lowest possible level, to make the device difficult to open and to make the device easy to handle so that the use thereof is not experienced by the sales people as an added inconvenience. In other words an appropriate anti-theft device is one which can be accepted by the shop owner as well as the sales people and provides effective means for preventing or at least substantially reducing theft of such theft-prone goods as compact discs and cassette tapes.
The invention has been proposed as part of this development and in order to satisfy said wants and demands in the best possible manner the safety device of the type referred to above according to the invention has obtained the characteristics of the claims.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to explain the invention in more detail an embodiment thereof will be described below reference being made to the accompanying drawings in which
FIG. 1 is a side view, partly a vertical cross-sectional view, of one embodiment of the safety device of the invention,
FIG. 2 is a side view of the opposite side of the safety device,
FIG. 3 is an end view of the safety device,
FIG. 4 is a plan view of the safety device,
FIG. 5 is a side view of a rotary bolt forming part of the lock means,
FIG. 6 is a longitudinal cross-sectional view of the lock housing of the lock means,
FIG. 7 is a plan view of the lock housing,
FIG. 8 is a fragmentary vertical cross-sectional view of the lock means when it is in the engaged position, and
FIG. 9 is a view corresponding to FIG. 8 but shows the lock means in disengaged position.
DETAILED DESCRIPTION
The safety device diclosed in the drawings is intended for a cassette for a compact disc. It is injection molded of plastics material, for example polycarbonate, which is a strong and for the purpose well suited plastics material. Preferably, the plastics material is crystal-clear. The device is formed as a flat rectangular frame having three walls 10, 11 and 12 which form narrow sides of the frame, a wall 13 at one flat side of the frame, forming an opening 14, and two triangular corner portions 15 and 16 and a rail 17 at the other flat side of the frame, said triangular corner portions connecting the walls 10, 11 and 11, 12, respectively, the rail 17 being located at the narrow side having no wall. At the open narrow side of the frame the wall 13 is retracted in the longitudinal direction of the walls 10 and 11 in relation to the rail 17 for productional reasons, and for the same reasons apertures 18 and 19 congruent with the corner portions, are provided in the wall 13. The cassette is inserted into the safety device by being pushed into the frame through the open narrow side to the left in FIG. 1. When the cassette is located in the frame it is encircled by the frame along three edges and at the two flat sides by the wall 13 at one flat side and by the corner portions 15 and 16 and the rail 17 at the other flat side.
In order to lock the frame to the cassette there is pro
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patent: 4964510 (1990-10-01), Loyd
Gehman Bryon P.
M W Trading APS
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