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. 01, 1994
Filed:
Oct. 07, 1993
Unisia Jecs Corporation, Atsugi, JP;
Abstract
In a super magnetostriction type actuator constructed such that a super magnetostriction rod is extended/contracted by application of a magnetic field from a solenoid coil, and a drive object is moved in response to the extension/contraction, a locating member for locating the super magnetostriction rod thermally deforms in correspondence with a thermal expansion of the super magnetostriction rod so as to permit an extension of the super magnetostriction rod due to the thermal expansion thereof. As a result, variation in spring loading and lift with thermal expansion of the super magnetostriction rod can be avoided. Also, the magnetostriction characteristic of the locating member is opposite that of the super magnetostriction rod allowing for greater relative movement of the super magnetostriction rod upon application of a magnetic field.