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. 12, 1977
Filed:
Dec. 17, 1975
Applicant:
Inventors:
Boaz Antony Jarrett, Sevenoaks, EN;
Alec Harry Seilly, North Wembley, EN;
Assignee:
Simms Group Research & Development Limited, Birmingham, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310 26 ;
Abstract
An actuating device comprises an elongated member formed from a material having the property of magnetostriction and a winding which can be energized to cause flow of magnetic flux in the member so as to cause a physical change in the dimension. The elongated member is divided into a plurality of magnetic circuits disposed along the length of the member and portions of adjacent magnetic circuits are adjacent each other. The directions of flux flow in adjacent magnetic circuits is such that in said portions of two adjacent circuits, the flux flows are in the same direction.