Inertia damper using ferrofluid

Details Inertia damper using ferrofluid Inertia damper using ferrofluid

1977-06-13

1978-10-31

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 74, 310 93, 335 47, 335 51, H02K 3700

Patent

active

041236750

ABSTRACT:
A viscous-fluid inertia damper, which damper comprises a housing composed of a nonferromagnetic material and having a chamber therein, a seismic mass containing a permanent magnet disposed in the housing chamber and in a closely spaced-apart relationship with the internal wall surface of the chamber, means to couple the housing to a dynamic element whose energy is to be dampened, and a ferrofluid of selected viscosity in the remaining volume of the chamber, the ferrofluid distributed generally uniformly in the volume, the magnetic saturation of the ferrofluid by the magnetic field of the permanent magnetic levitating the seismic mass in the damper, and the viscosity of the ferrofluid in the magnetic field providing a means to dissipate energy from the dynamic system through viscous shear forces in the ferrofluid disposed between the wall surface of the chamber and the seismic mass.

REFERENCES:
patent: 2603103 (1952-07-01), Sohon et al.
patent: 2764721 (1956-09-01), Johnson
patent: 3447006 (1969-05-01), Bair
patent: 3681525 (1972-08-01), Wada et al.
patent: 3790831 (1974-02-01), Morreale
patent: 3962595 (1976-06-01), Eddens
patent: 4034941 (1977-07-01), Godet
patent: 4049985 (1977-09-01), Sudler
"Magnetic Fluids Engineering Kit & Applications Sketches", Ferro Fluidics Corp., Burlington, MA.

Affiliated with

Also associated with

Rating

Inertia damper using ferrofluid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Inertia damper using ferrofluid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inertia damper using ferrofluid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1836679