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1. CA2637511 - FLUID DAMPER

Office
Canada
Application Number 2637511
Application Date 09.02.2007
Publication Number 2637511
Publication Date 16.08.2007
Grant Number
Grant Date 22.05.2012
Publication Kind C
IPC
F16F 9/53
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
F16F 9/20
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
10using liquid only; using a fluid of which the nature is immaterial
14Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
16involving only straight-line movement of the effective parts
18with a closed cylinder and a piston separating two or more working spaces therein
20with the piston-rod extending through both ends of the cylinder
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 CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY
Inventors MURAKAMI, TAKAHIRO
ARASEKI, HIDEO
Priority Data 2006-032724 09.02.2006 JP
2006099661 31.03.2006 JP
2006100220 31.03.2006 JP
Title
(EN) FLUID DAMPER
(FR) AMORTISSEUR A FLUIDE
Abstract
(EN)
A fluid damper which is capable of operating while automatically changing the damping force according to the movement of a piston without installing a sensor detecting the displacement of the piston and a controller controlling the supply of electric power. The fluid damper, in which the damping force is automatically changed according to the movement of the piston, comprises a fluid (8) having magnetism, a piston (2) of magnetic material, a cylinder (3) sealing the fluid (8) with magnetism and storing the piston (2), a piston rod (4) passed through the cylinder (3) and supporting the piston (2), magnetic field generating device (6) installed on the outside of the cylinder (3), first yoke member (5) disposed around the cylinder (3), and second yoke member (7) disposed around the piston rod (4) and on the outside of the cylinder (3). Thereby, a magnetic circuit can be partially formed.