Patent Number: 6,612,409

Title: Magneotorheological piston and damper

Abstract: A magnetorheological piston includes a body having a substantially magnetically energizable passageway and a substantially magnetically non-energizable passageway. The substantially magnetically non-energizable passageway has a valveless passageway throat and has a flow cross-sectional area which has a minimum at the passageway throat and which is larger away from the passageway throat. A magnetorheological damper includes a cylinder and the above-described magnetorheological piston, wherein the piston is positioned in, and slideably engages, the cylinder.

Inventors: Lun; Saiman (Centerville, OH), Hofmann; Randall L. (Dayton, OH), Lisenker; Ilya (Miamisburg, OH)

Assignee: Delphi Technologies, Inc.

International Classification: F16F 9/53 (20060101); F61F 009/53 ()

Expiration Date: 09/02/2020