Vibration isolation apparatus

Details Vibration isolation apparatus Vibration isolation apparatus

1982-03-10

1984-02-21

Butler, Douglas C.

Brakes

Internal-resistance motion retarder

Magnetic fluid or material

188379, 2671401, F16F 600, F16F 700, F16F 1300

Patent

active

044324413

ABSTRACT:
A vibration isolation apparatus includes upper and lower, axially magnetized permanent magnets, which are disposed on a common axis and present poles of a like polarity on their opposing surfaces. The magnetic repulsion acting between the magnets maintains the upper one of them in suspension, on which is placed an instrument or member which is to be isolated from oscillations. In their central region, the magnets carry upper and lower bearing members which are disposed on the common axis and through which a connection shaft of a magnetizable material extends. The upper end of the connection shaft is provide with a flange, which is tightly fitted into a cylindrical opening formed in a threaded shank mounted on the upper magnet, thereby defining air damper to suppress a free oscillation of the upper magnet.

REFERENCES:
patent: 3088062 (1963-04-01), Hudimac
patent: 3770290 (1973-11-01), Bottalico
patent: 4314623 (1982-02-01), Kurokawa

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