| 摘要 |
1469077 Straps L LAWRENCE PRODUCTS Inc 12 Aug 1975 [7 Oct 1974] 33492/75 Heading A4X [Also in Division E1-2] A strap for supporting spectacles, goggles or eye glasses comprises an elongate member 17 having at each end a looped part 19 or 20 which extends through an opening in a retaining member 21 or 22 and is of polyvinyl chloride having a durometer value measured according to the Shore A scale of 65 to 85, the looped part having a uniform crosssection in its unstressed condition and its material and the cross-sectional areas of the material and of the opening in the retaining member 21 or 22 being such that by applying tension to the strap the material in the opening is resiliently attenuated permitting movement of the looped part through the opening to alter the size of the loop. The retaining member has two openings with the ends of the member 17 anchored in one of the openings by an adhesive or by bonding while the member 17 extends adjustably through the other opening which is smaller in cross-section than the material of the member 17 and resiliently grips the member to retain it in adjusted position. In a second embodiment, Fig. 6 (not shown), the ends of the elongate member are rivetted to the body of the member to form the end loops and the retaining member is formed by a coil of wire providing an opening for adjustably gripping both opposed parts of the loop over which the retaining member is adapted to slide to vary the size of the loop. In a third embodiment, Fig. 7 (not shown) endless loops formed by extruding a tube and cutting it transversely are interconnected by a link chain. |
