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:
Sep. 23, 2025
Filed:
Feb. 02, 2022
Kito Corporation, Yamanashi, JP;
Tatsuru Yamamoto, Yamanashi, JP;
Takuma Isshiki, Yamanashi, JP;
KITO CORPORATION, Nakakoma-gun, JP;
Abstract
To provide a single-phase induction motor control method and apparatus and an electric chain block which are capable of appropriately judging an overload of a single-phase induction motor even when the single-phase induction motor is in a condition where energization of an auxiliary coil is repeated. Provided is a method of controlling a single-phase induction motor including a main coil ML, an auxiliary coil AL, a capacitor C, and an SSR (solid-state relay) power circuit, in which the main coil ML is supplied with an electric current from a single-phase alternating-current power supplythrough the SSR power circuit, and when the load is heavy, the auxiliary coil AL is energized. An overload is judged based on the ratio of energizing time during which the auxiliary coil AL is energized within a predetermined time.