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:
Nov. 23, 1982
Filed:
Jul. 02, 1980
Rudolph J Liedtke, Detroit, MI (US);
F. Jos. Lamb Company, Warren, MI (US);
Abstract
A circuit for indicating angular position of a rotary member comprising a resolver including an amplitude stabilized sine-cosine generator coupled to quadrature windings of the resolver for providing a d.c. signal which varies as a linear function of the position of a rotatable member coupled to the resolver. The d.c. signal is fed to a plurality of comparators for comparing such angular position to a plurality of predetermined angular set points. The comparators are coupled to a priority encoder for indicating angular position of the rotary member. The encoder includes a switch array and a plurality of exclusive-OR gates for programming the encoder to provide a zero output at an arbitrary position of the rotary member. A digital voltmeter calibrated in angles of member rotation is coupled through a plurality of momentary contact push-button switches for normally receiving the d.c. signal indicative of angular rotation, and for alternatively and selectively receiving a signal indicative of a selected one of the set points for facilitating set point adjustment.