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:
May. 29, 2001
Filed:
Jun. 30, 1999
Jeffrey W. Akers, Columbia, MO (US);
James Michael Zerkus, Houston, TX (US);
Other;
Abstract
A method for post-production precision modification and enhancement of pre-existing shape memory alloy (SMA) forms to precisely alter their chemical composition and properties and produce greater accuracy and versatility. The present process includes carefully controlled electrodeposition or electroless deposition of alloying agents such as Nickel, Copper, or other elements on the surface of the pre-existing SMA form to produce the desired shape memory properties, followed by application of a protective coating, then high temperature heat treatment in combination with gentle physical kneading to speed up the homogenization process (thermal diffusion) and produce rapid diffusion of the plated metal throughout the form. The present method may also use the skin effect of AC current for localized heat treatment of the SMA form and neutron activation tracer analysis for in-line quality control and diagnostics. The process can also be used to impart shape memory properties to non-SMA alloy forms. Another aspect of the invention is an article of manufacture produced by the process.