Tracking device with linear motor

Details Tracking device with linear motor Tracking device with linear motor

1983-10-06

1986-09-23

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 57, 369 98, 369219, 74 25, 360101, 360107, 318135, 318254, 318695, 318696, G11B 700, G11B 2102

Patent

active

046139621

ABSTRACT:
A device for tracking a movable body along a linear path parallel to a plane includes a linear motor for driving the body along the linear path. The body is mounted, as by rollers, for movement along a guide, such as a pair of parallel guide rails, supported on a base which also supports the motor. To enhance stability of the body during tracking movement, the rollers or other mounts for the body are urged against the guide by the magnetic action of a flux which is separate from the principal flux used to generate thrust for the linear motor and which provides an attractive force against preferably a pair of members, such as steel plates, of high magnetic permeability fixed to the movable body.

REFERENCES:
patent: Re30118 (1979-10-01), Halfhill et al.
patent: 4034613 (1977-07-01), Halfhill et al.
patent: 4322840 (1982-03-01), Kusaka

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