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:
Dec. 02, 2003
Filed:
Oct. 08, 2002
Saiman Lun, Centerville, OH (US);
Ilya Lisenker, Miamisburg, OH (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A magnetorheological piston includes a magnetorheological-piston coil and a magnetorheological-piston core. The magnetorheological-piston coil has a longitudinal axis. In one expression, the magnetorheological-piston core includes at least two separate core pieces, wherein each of the core pieces is a powder-metal core piece, and wherein the coil is positioned to circumferentially surround at least a portion of at least one of the core pieces. In another expression, the magnetorheological-piston core includes separate upper core, center core, and lower core pieces. The center core piece is located longitudinally between the upper core and lower core pieces and has a circumferential surface positioned radially inward from the inner-diameter portion of the coil. The coil is longitudinally positioned between the upper core and lower core pieces. In one example, each of the upper core, center core, and lower core pieces is a powder-metal core piece.