Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier
Patent
1979-10-26
1982-01-12
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of the amplifier
360 1, 360137, G11B 502, G11B 500
Patent
active
043108628
ABSTRACT:
A magnetic control strip recording device for vehicle control systems. A paving machine (12) lays a strip (10) containing magnetizable material. A wheel (30) rotates in response to the movement of machine (12). Magnets (34), (36) on the wheel and reed switches (38), (40) adjacent the wheel are activated in response to the movement of the wheel. An electromagnet (21) is energized when the reed switches (38), (40) are closed creating a magnetic pattern in the strip (10) of magnetized zones having alternating polarities for adjacent zones. An alternative magnetic pattern may also be produced by opening the optional disabling switch (44). The switches (38, 40) are preferably capacitively coupled to the electromagnet (21) to prevent undue drain on the power supply should the wheel (30) be stopped with one of the switches (38, 40) closed.
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"Australian Trading News"--Journal of the Australian Trade Comissioners--Canada, 1/77.
"Machine Constructs Kerbs, Gutters & Channels"--Unindentified Printed Publication.
Photocopy of a Photograph Showing a GEMCO Curb Laying Machine.
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