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. 22, 1988
Filed:
Aug. 13, 1987
Steven F Chmiel, Milwaukee, WI (US);
PT Components, Inc., Milwaukee, WI (US);
Abstract
A motor starting circuit (10) is provided for disconnecting the start winding (14) of a single phase AC induction motor from an AC source (18) after a time delay. A start switch (22) in series with the start winding (14) controls energization and disconnection of the start winding (14). Turn-on of the start switch (22) is controlled by a turn-on switch 28 connected in parallel across the start switch (22) and not across the start winding (14). Turn-off of the start switch (22) is controlled by a cut-out switch (50) which in turn is controlled by an RC timing circuit (58, 60) connected across the AC source (14). A restart switch (64) may be added without changing the remaining circuitry. The restart switch (64) controls charging of the timing capacitor (60) and causes reconnection of the start winding (14) to the AC source (18) when motor speed drops below a given cut-in speed.