The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 1981
Filed:
Mar. 09, 1979
James Chapman, Airdrie, GB;
James W Ratz, Bloomington, MN (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
The servo apparatus includes a series resistor string connected in parallel with the body of the servo slidewire resistor. Upscale and downscale travel limit voltage points, corresponding to upscale and downscale travel limit positions for the slidewire contact, are established along the resistor string. The limit voltages on the limit voltage points are separately compared with the slidewire contact voltage, and appropriate motor drive signal interrupting signals are produced when the slidewire contact voltage exceeds the upscale limit voltage or drops below the downscale limit voltage. The interrupting signals effect their motor drive signal interrupting action by reversing the output polarity of motor drive comparators which produce the motor drive signals under the control of an error amplifier which compares the apparatus input voltage to the slidewire contact voltage.