Abstract: A proximity sensor including a structure suspending at least one lens above a circuit board, light emitters operable to project light beams through the lens along a common projection plane, light detectors operable to detect amounts of light arriving through the lens at the detector, wherein an object in the projection plane reflects light from an emitter to one or more of the detectors, and wherein each emitter-detector pair, including one of the emitters and one of the detectors, when synchronously activated, is expected to generate a greater detection signal at the activated detector than the other detectors, were they to be synchronously activated with any of the emitters, when the object is located at a specific 2D location in the projection plane corresponding to the emitter-detector pair, and a processor identifying gestures performed by the object based on amounts of light detected by the detector of each emitter-detector pair.

Abstract: An anti-theft alarm tag comprises two parts (10,12) which shall be located on opposite sides of a product (11) with a pin (14) on one part (12) extending through the product and locked together with the other part (10). Said one part forms a housing comprising a bottom (15) and a cover (16) and enclosing an alarm device (20) and a circuit board (18) with an electronic circuit controlling the alarm device. The pin is connected to the cover or the circuit board and extends through the bottom with slide fit, contact means (39) being switched for activating the alarm device by deformation of the cover or the circuit board, respectively, following an attempt to separate the two parts of the alarm tag.

Abstract: An anti-theft device comprising a container formed by a box (10) and a lid (11) hinged together. A lock slide (15) inside the box can be displaced between a disengaged position and an engaged position. A flange (22) on the lid forms an L-shaped slot. A first limb (23A) of the slot is perpendicular to a free edge of the flange and opens in the edge to receive a projection on the lock slide in the disengaged position thereof. A second limb (23B) of the slot extends transversely of the first limb to receive the projection when the lock slide is in the engaged position. A latch mechanism (26, 28) latching the lock slide in the engaged position can be actuated by a special tool to unlatch the lock slide and allow displacement thereof to the disengaged position.

Abstract: An anti-theft alarm tag comprises two parts (10,12) which shall be located on opposite sides of a product (11) with a pin (14) on one part (12) extending through the product and locked together with the other part (10). Said one part forms a housing comprising a bottom (15) and a cover (16) and enclosing an alarm device (20) and a circuit board (18) with an electronic circuit controlling the alarm device. The pin is connected to the cover or the circuit board and extends through the bottom with slide fit, contact means (39) being switched for activating the alarm device by deformation of the cover or the circuit board, respectively, following an attempt to separate the two parts of the alarm tag.

Abstract: An anti-theft device comprising a container formed by a box (10) and a lid (11) hinged together. A lock slide (15) inside the box can be displaced between a disengaged position and an engaged position. A flange (22) on the lid forms an L-shaped slot. A first limb (23A) of the slot is perpendicular to a free edge of the flange and opens in said edge to receive a projection on the lock slide in the disengaged position thereof. A second limb (23B) of the slot extends transversely of the first limb to receive the projection when the lock slide is in the engaged position. A latch mechanism (26, 28) latching the lock slide in the engaged position can be actuated by means of a special tool to unlatch the lock slide and allow displacement thereof to the disengaged position.

Abstract: Anti-theft device for spectacle frames comprising a housing (10) forming an opening (18) to receive therein one bow (34) of the spectacle frame. By clamping means (26) in the housing this can be fastened to the bow. The clamping means has a rotatable operating member, which is accessible in a socket (14) provided on the housing, and can be actuated only by using a special tool. The housing is dimensioned to allow, when fastened to the bow, that the spectacle frame is tried on and that the bow is folded. It is divided into two parts in a plane through the socket. A washer (23) provided with an alarm element for affecting a magnetic, acoustic or electromagnetic field, is pushed onto the socket receiving said socket in an opening in the washer for keeping the two parts of the housing together, and is locked against withdrawal from the socket.

Abstract: An alarm tag made of two parts, one of which is provided with a pin (13) attached to the one part (12) to be located on one side of the product (11) with the pin extending through the product into locking engagement with the other part (10) located on the opposite side of the product. A resonance chamber (29), mounted in the one part (12), having a central outlet (30) is provided for activating the alarm device. A cover (19) is mounted on the one part (12) over the resonance chamber, and includes a central portion in register with the outlet (30), and bars (36) extending radially from the central portion (35) to the periphery of the cover, the bars defining slots (37) between adjacent bars.

Abstract: An alarm tag is provided having two parts, one of which has a pin attached thereto and extending through the part and into locking engagement with the other part. One part has means for activating an alarm device, the alarm device being either in the other part or an external alarm which interacts with the tag through an alarm field. Further, one part has a contact element operatively related to the other part such that disturbing the pin causes the contact to activate the alarm when the parts are separated.

Abstract: An anti-theft box displays goods that are attractive by theft in shops and department stores. The anti-theft box includes a cassette (10) having a lid (11). An element is provided on or in the anti-theft box for wireless activation of an alarm device if the anti-theft box is carried through an exit of a shop or a department store. A lock mechanism is provided on the inside of the lid, which includes a lock slide (15) provided with lock bolts (16), which can be displaced in plane parallel fashion in order to bring the lock bolts into and out of locking engagement with the cassette (10). A latch mechanism (36) is provided to latch, in an engaged position thereof, the lock side with the lock bolts in the engaged position and can be actuated to a disengaged position by means of a special tool to allow displacement of the lock bolts from the engaged position.

Abstract: An anti-theft device to be applied to a shoe and provided with a sensor element (52) of an alarm system comprises two clamp plates (11, 12) which can be tightened against each other by a screw mechanism to be attached to the shoe straddling the edge of the upper leather thereof which defines the insert opening for the foot, and a device for preventing operation of the screw mechanism for displacement of the clamp plates from the tightened position, which can be actuated by means of a special tool only.

Abstract: The invention relates to an anti-shop lifting device, intended to be passed onto and locked to a bottle-neck having an external circumferential bead. The device comprises an outer socket (15) which can be shifted in relation to an inner socket (10) between two end positions and is locked by latch means (24) in one end position. A number of retainers (21) distributed peripherally on the inner surface of the outer socket, when the outer socket is in said one end position extend into the inner socket through openings (13) in the wall of said inner socket to an engaged position in which the retainers engage behind the bead of the bottle-neck in order to prevent the anti-shop-lifting device form being withdrawn. The latch means (24) is biased to latching position but can be actuated by means of an external element (13) to a disengaged position against the bias in order to allow movement of the retainers from the engaged position and thus withdrawal of the anti-shop-lifting device from the bottle-neck.

Abstract: Safety device to be mounted on a parallelepipedic box comprises a frame (10) constructed to encircle the box and having an insert opening (11) for the box and a blocking element (13) displaceably and pivotably mounted to the frame, the blocking element being adjustable between a blocking position and an off position to prevent in the blocking position the box inserted into the frame from being withdrawn from the frame. A spring blade (22) clamped at one end thereof in the blocking element extends in the displacement path of the blocking element to engage at the other, free end thereof behind a shoulder (25) on the frame and thus to prevent displacement of the blocking element in the blocking position, wherein positive engagement is established between the blocking element and the frame in order to prevent the blocking element from pivoting.

Abstract: A lock mechanism including a lock member which is normally held in an engaged position to be magnetically operated from said engaged position to a disengaged position, said lock member comprising a spring blade and an engagement member projecting therefrom transversely to the flat side of the spring blade at one end thereof, the spring blade being fixedly secured at the other end thereof, and a safety device for CD boxes having such a lock mechanism.

Abstract: A theft prevention device to be mounted on a parallelepipedic box, the device including a frame with an insert opening for enclosing the box. The frame is provided with a hook shaped lock tongue, displaceably and pivotally mounted to the frame. The hooked shaped lock tongue may be moved from an engaged position on the frame where it blocks the insert opening, to a position where it can be disengaged to not block the insert opening to allow removal of the box from the frame. A latch having a rotary bolt holds the hook shaped lock tongue in the engaged position. This latch can be adjusted to free the lock tongue, for it to be moved from the engaged position where it can be disengaged from the frame.

Abstract: Safety device for a cassette for a compact disc, a cassette tape or the like, which comprises two hingedly interconnected rectangular cassette halves. The safety device can be mounted on the outside of the cassette encircling the cassette to prevent opening thereof and is provided with a lock member for locking engagement with the cassette, which includes a rotary bolt (22) enclosed in a lock housing (20), to be adjusted between engaged position and disengaged position from the outside of the lock housing. A spring blade (30) of magnet material is provided as a latch member for the rotary bolt, the spring blade being arranged to prevent in a latching position rotation of the rotary bolt from the engaged position and being operable against spring bias by magnetic attraction from the outside of the lock housing from the engaged position unlatching the rotary bolt to allow rotation thereof to the disengaged position.

Abstract: The invention relates to an anti-theft device for spectacle frames, which consists of an elongate body (10, 11) to be clamped to one bow of the spectacle frame, said body comprising a sleeve (10) open at one end thereof and having a transverse aperture (12) to receive therein the bow. Furthermore, said body is provided with a sensor (33) affecting an anti-theft system. A slide (15) displaceable longitudinally of the sleeve can be adjusted for engagement and disengagement of the bow by a screw (18) locked against axial displacement in the sleeve. The screw can be operated manually when the anti-theft device is to be mounted and demounted by a special tool only, which can be inserted into the sleeve through the open end thereof to engage an engagement element (22) of the screw located inside the sleeve.

Abstract: A depth charge igniter has a circumferential water pressure actuated shear pin between the cover and movable plunger adopted to hit a percussion cap, which shear pin may be adjustably engaged along its circumferential length to set a predetermined detonation depth.

Abstract: Ventilation device with a vent pivotally mounted in a frame and restrained against opening forces by a locking mechanism and also connected to the frame by a hydraulic brake or damper designed to gradually reduce the opening speed of the vent at least towards the end of the opening movement.