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:
Jan. 11, 1994
Filed:
Jun. 18, 1992
Applicant:
Inventors:
J David Carlson, Cary, NC (US);
Michael J Chrzan, Raleigh, NC (US);
Assignee:
Lord Corporation, Erie, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
188267 ; 188298 ; 188299 ; 188318 ; 188320 ; 18832214 ; 18832215 ; 18832222 ; 267 6415 ; 26714014 ; 267219 ;
Abstract
Magnetorheological (MR) fluid dampers are optimized. Dimensional relationships involved in the flow of magnetic flux are related to an operational parametric ratio of magnetic flux density in the fluid to the flux density in the steel. A magnetic valve is utilized to change the flow parameters of the MR fluid and, hence, the operational characteristics of the damper. Several embodiments depicting improved piston designs, including spool as well as toroidal configurations, are disclosed. In addition, both single and twin-tube housing designs are presented.