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. 10, 1984
Filed:
Sep. 29, 1981
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
336100 ; 181202 ; 181208 ; 188379 ;
Abstract
A static induction apparatus including a vessel for containing a main body of the static induction apparatus, a plurality of reinforcing support members secured to side plates of the vessel and a sound reducing structure. The sound reducing structure includes a plurality of sound reducing members supported between the reinforcing support members and each including a sound insulating panel composed of high damping metal plate, a resilient plate formed of thin metal sheet material interposed between the sound insulating panel and the reinforcing members, and a weight member secured to the vicinity of the boundary between the sound insulating panel and the resilient plate.