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1. WO1999006731 - MAGNETORHEOLOGICAL FLUID DEVICES EXHIBITING SETTLING STABILITY

Publication Number WO/1999/006731
Publication Date 11.02.1999
International Application No. PCT/US1997/012871
International Filing Date 04.08.1997
Chapter 2 Demand Filed 02.02.1999
IPC
F16F 9/53 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
CPC
F16F 9/535
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
535Magnetorheological [MR] fluid dampers
Applicants
  • LORD CORPORATION [US]/[US] (AllExceptUS)
  • CARLSON, J., David [US]/[US] (UsOnly)
Inventors
  • CARLSON, J., David
Agents
  • WAYLAND, Randall, S.
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) MAGNETORHEOLOGICAL FLUID DEVICES EXHIBITING SETTLING STABILITY
(FR) DISPOSITIFS A FLUIDE MAGNETORHEOLOGIQUE PRESENTANT UNE STABILITE DE DECANTATION
Abstract
(EN) A magnetorheological (MR) device (20) including settling stability. The MR fluid device (20) includes a housing (22) including a hollow (30), a moving element (26) contained within the hollow (30), the housing (26) and moving element (26) cooperating to form a working section (36) and a chamber (32) within the hollow (30), a MR fluid (38) contained within the working section (36) and the chamber (32), a coil (40) or the like for generating a magnetic field to act upon the MR fluid (38) contained within the working section (36) to cause a rheology change therein, and a magnet (25) or electromagnet (31) generating a low-level magnetic field to act upon a substantial portion of the MR fluid (38) contained in the chamber (32) to minimize settling of the particles in the MR fluid. Linear and rotary acting embodiments are included.
(FR) L'invention concerne un dispositif magnétorhéologique (MR) (20) présentant une stabilité de décantation. Le dispositif à fluide MR (20) comprend un logement (22) présentant une partie creuse (30), un élément mobile (26) contenu à l'intérieur de la partie creuse (30), le logement (22) et l'élément mobile (26) coopérant pour former une partie de travail (36) ainsi qu'une chambre (32) à l'intérieur de la partie creuse (30), un fluide MR (38) contenu à l'intérieur de la partie de travail (36) et de la chambre (32), une bobine (40) ou analogue destinée à produire un champ magnétique agissant sur le fluide MR (38) contenu à l'intérieur de la partie de travail (36) afin d'y provoquer un changement de réhologie, et un aimant (25) ou électroaimant (31) produisant un champ magnétique de faible intensité destiné à agir sur une partie substantielle du fluide MR (38) contenu dans la chambre (32) pour réduire au minimum la sédimentation des particules dans le fluide MR. On a également prévu des modes de réalisation à fonctionnement linéaire et rotatif.
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