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:
Aug. 10, 1993
Filed:
Jan. 27, 1992
Steven F Chmiel, Milwaukee, WI (US);
Rexnord Corporation, Stearns Division, Milwaukee, WI (US);
Abstract
A multi-level motor load sensing circuit senses first, second and third ranges of auxiliary winding voltage and provides a load-too-high signal for the first range, a load-OK signal for the second range, and a load-too-low signal for the third range, and provides an output which transitions from the load-too-high signal to the load-OK signal to the load-too-low signal as auxiliary winding voltage increases from the first range to the second range to the third range, and which transitions from the load-too-low signal to the load-OK signal to the load-too-high signal as auxiliary winding voltage decreases from the third range to the second to the first range. The output transitions twice during each of rising and falling values of auxiliary winding voltage between the first and third ranges. Hysteresis with improved tracking is also provided.