Providing control signals for machine operations

Details Providing control signals for machine operations Providing control signals for machine operations

1974-09-16

1978-12-26

Moffit, James W.

Dynamic magnetic information storage or retrieval

Recording on or reproducing from an element of diverse utility

83367, 90 13C, 234 63, 346 33MC, G11B 2500

Patent

active

041319184

ABSTRACT:
There is described a method of guiding a machine as it moves relative to a surface, which is preferably the surface of a workpiece on which the machine is working, by selectively magnetizing a layer of magnetic material provided at or close to the surface so as to define a path of movement, producing guidance signals during the relative movement by detecting the selective magnetization, and using the guidance signals to automatically guide the relative movement, so that the defined path is followed. Data other than guidance data may be provided on the layer by selective magnetization.

REFERENCES:
patent: 2735335 (1956-02-01), Shaw
patent: 3307162 (1967-02-01), Fink
patent: 3409853 (1968-11-01), Guerth
patent: 3486607 (1969-12-01), Hacker et al.
patent: 3575255 (1971-04-01), Wickstrom
patent: 3609678 (1971-09-01), Fayling
patent: 3628624 (1971-12-01), Wesener

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