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UNIVERSAL JOINT

  • US 3,663,044 A
  • Filed: 05/04/1970
  • Issued: 05/16/1972
  • Est. Priority Date: 05/04/1970
  • Status: Expired due to Term
First Claim
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1. In a universal joint for connecting two parts, a pair of diametrically opposed lugs extending from one of said parts toward the other part, a second pair of diametrically opposed lugs extending from said other part toward the first part, adjacent lugs being 90* apart when the parts are aligned, a gimbal ring between said parts, and pivotal connections between said gimbal ring and said lugs, the four portions of said gimbal ring in the vicinity of said pivotal connections being substantially uncurved forming a substantially square configuration, whereby the torsional shear stress created at the corners of said gimbal ring by axial forces between said parts will be reduced.

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