| 摘要 |
<p>Improvement in hose clamps of the type employing a worm screw (20) mounted in a housing (34) which is fastended to a metal band (10) and engages in slots (18) in the band. A thin backing layer (24) is laminated to the metal band of the clamp on the face that engages the article to be clamped, for example, to prevent extrusion of hose materials through the slots. This backing layer is much thinner than the band material, so that it will be stretched by the screw thread lands, but is thick enough that it will not break or crack under such treatment. It is slightly narrower than the bank material, so that it can be applied without protruding from edges and form a dangerous knife edge, and is fixed to the bank by means of a resilient adhesive (22) that will permit the required deformation without separation. The screw thread lands can now be made deep enough for positive engagement in the slots and even protrude slightly from the other side. This improved clamp can be manufactured by a continuous process of drawing a strip of metal from one coil, stamping runs of slots in it, drawing a backing strip from another coil, laminating the two strips together by means of a thin double sided adhesive tape that is interposed between them, cutting the resulting laminate into suitable band lengths, and then mounting the housing and screw thereon.</p> |
