Brakes – Internal-resistance motion retarder – Magnetic fluid or material
Patent
1980-02-01
1982-02-09
Reger, Duane A.
Brakes
Internal-resistance motion retarder
Magnetic fluid or material
188379, F16F 700, F16F 600
Patent
active
043146236
ABSTRACT:
A vibration isolator utilizes a force of magnetic repulsion which is produced by a pair of permanent magnets disposed so that poles of a like polarity oppose to each other. The vibration isolator includes an upper and a lower, annular magnet assembly which are axially magnetized and which are disposed coaxially on a common axis so that their opposing surfaces present poles of a like polarity. The respective magnet assemblies are covered, except for the opposing surfaces, by yoke members of a magnetizable material, whereby a magnetic flux is concentrated across the opposing surfaces of the magnetic assemblies to produce an increased force of magnetic repulsion therebetween. Bearing sleeves are disposed in the central region of each of the magnet assemblies. A connecting shaft has its opposite ends loosely fitted in the respective bearing sleeves, whereby one of the magnet assemblies is coupled to the other so as to be axially movable independently from each other.
REFERENCES:
patent: 3088062 (1963-04-01), Hudimac
patent: 3770290 (1973-11-01), Bottalico
Kokka Kogyo Kabushiki Kaisha
Reger Duane A.
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