The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 1984
Filed:
Nov. 23, 1981
Francis W Johnson, Burlington, CA;
Tridon Limited, Burlington, CA;
Abstract
The invention provides an improvement in hose clamps of the type employing a worm screw mounted in a housing which is fastened to a metal band and engages in slots in the band. A thin backing layer 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 of a thickness such 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 band material, so that it can be applied without protruding from edges and form a dangerous knife edge, and is fixed to the band by means of a resilient adhesive 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.