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:
Aug. 17, 1999
Filed:
Mar. 11, 1997
Denso Corporation, Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
An electromagnetic device includes a solenoid stator comprised of a plurality of magnetic plates stacked spirally and regulated to prevent displacement. The stator is constructed by spirally disposing around its central axis a plurality of magnetic plates each having a uniform thickness and being bent in a curved shape. A support body of the device is so assembled to the stator as to abut its bottom face and a through hole. The support body has a disk part having an outer diameter generally corresponding to that of the stator and a cylindrical part extending upwardly from the central part of the disk part. The top end part of the cylindrical part is fixedly joined to the stator by laser welding. A push rod coupled with an armature is disposed slidably in a hole of the support body. The bottom face of a cap housing abuts the peripheral part of the top face of the stator to press the peripheral part from the upperside.