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:
Nov. 23, 1993
Filed:
Sep. 25, 1992
Hsing Chen, Chiu-Kang Li, Hsichu City, TW;
Horng-Show Koo, Fan-Po Tsun, Fu-Hsing Hsiang, Chang-Hua Hsien, TW;
Fu-Hsiang Chen, Fan-Po Tsun, Fu-Hsing Hsiang, Chang-Hua Hsien, TW;
Other;
Abstract
A temperature sensitive controlling device comprises a casing inside which powders of at least two shape memory alloys are disposed with a shaft movably received therein. The mix of different shape memory alloy powder provides a characteristic curve more desired than its component shape memory alloys and by adjusting the ratio between the component powders, the curve can be adjusted as one expects so that when the powders are subject to temperature variation, the shaft is moved as desired. A method for manufacturing such a temperature sensitive controlling device is also provided. The method comprises the steps of melting material metals of a given ratio together to form a shape memory alloy, atomizing the molten alloy by an inert gas flow to form a first kind of powder, providing at least a second kind of powder with the similar way, mixing these powders together in accordance with a specific ratio, disposing these powers in a casing and then sealing the casing and inserting therein a movable member to be moved by the powders when the powders are subject to temperature variations.