Method and apparatus for controlling a device

Details Method and apparatus for controlling a device Method and apparatus for controlling a device

1992-10-01

1995-02-14

Ruggiero, Joseph

Boots, shoes, and leggings

198301, 364479, G06F 1546

Patent

active

053901053

ABSTRACT:
A method of controlling an apparatus with a control signal responsive to a feedback signal comprises: detecting when a feedback signal is not being received; determining whether a control signal is being provided; and adjusting the control to the apparatus depending on whether the control signal is being provided. An apparatus for performing this method comprises a programmed computer and a control signal feedback circuit for providing to the programmed computer a signal indicating whether a valid control signal is being provided.

REFERENCES:
patent: 3452774 (1969-07-01), Stanton
patent: 4053747 (1977-10-01), Davis
patent: 4057715 (1977-11-01), Jones et al.
patent: 4353482 (1982-10-01), Tomlinson et al.
patent: 4751648 (1988-06-01), Sears, III et al.
patent: 4779186 (1988-10-01), Handke et al.
patent: 4916631 (1990-04-01), Crain et al.
patent: 5010473 (1991-04-01), Jacobs
Halliburton Services general technical data brochure on the Automatic Proppant Control System (number G-9156 (Rev.)) publsihed in the United States more than one year ago; Date Unknown.

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