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:
Apr. 26, 1988
Filed:
Oct. 07, 1985
John A Simpson, Mountain View, CA (US);
Keith Melton, Cupertino, CA (US);
Tom Duerig, Fremont, CA (US);
Raychem Corporation, Menlo Park, CA (US);
Abstract
There is disclosed a method of preassembling a composite coupling. The coupling has at least one heat-recoverable driver member and at least one metallic insert. The driver member is made from a nickel/titanium-based shape memory alloy having a transformation hysteresis defined by M.sub.s, M.sub.f, A.sub.s and A.sub.f temperatures. The method includes the steps of overdeforming the driver member by applying a stress sufficient to cause nonrecoverable strain in the driver member so that the A.sub.s and A.sub.f temperatures are temporarily raised to A.sub.s' and A.sub.f', respectively; removing the stress; engaging the driver member and insert; and then warming the driver and insert to a temperature less than A.sub.s'. There is also disclosed a composite coupling processed by this method.