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:
Feb. 06, 1979
Filed:
Sep. 16, 1977
Kenneth D Schreyer, Clarence, NY (US);
Columbus McKinnon Corporation, Tonawanda, NY (US);
Abstract
A coupling shackle for field/factory assembly of lengths of chain, rope, cables, or the like/or attachments thereto; said coupling shackle comprising a generally U-shaped unit comprising an overlay/underlay assembly of two or more relatively nested complemental-configured U-shaped members which are traversed and interconnected at their leg ends as by means of a bolt or pin or the like. Said members may be first stamped or otherwise cut out of sheet/plate stock and then bent into U-shaped configurations; the bowed intermediate portions thereof being subsequently U-shape sectionally formed. The open end leg portions at opposite sides of the unit are apertured and side-by-side mounted upon the structurally cooperating interconnecting bolt or pin. Preferably, a bearing sleeve member embraces the bolt or pin intermediately of the legs of the U-shaped members; the sleeve member being of outside-diameter-stepped-down form at its opposite ends so as to accommodate thereon said leg portions which are formed with differently shaped successively smaller diameter apertures. Thus, when the shackle is under tension loadings the bowed portions of contiguous members yield into mutually reinforcing shapes; and the loadings thereon are transmitted to the bolt or pin member in such manner as to reduce the shear stress concentrations thereon.