Anti-theft device for spectacle frames
AssigneeM W Trading APS
InventorBertil Holmgren
Life of this patent
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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.
Claims7
An anti-theft device for spectacle frames having spaced apart bows which, when unfolded, define a space therebetween, said device comprising:
- a) a body having an elongated sleeve open at one end thereof, said sleeve having a transverse aperture therethrough to receive the bow, said aperture being bounded by two sidewalls and an end wall formed at an angle oblique to one of the side walls,
- b) means for clamping the sleeve to the bow including a slide displaceable longitudinally within said sleeve and a screw received within the slide, said sleeve leaving the defined space free of obstruction, so that the frame may be worn without removal of the device and so that a bow extending through said aperture will tend to be biased against at least two inner walls of said aperture when said slide engages the bow.
Dependencies are inferred from the claim text.