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. 05, 2025
Filed:
Apr. 07, 2023
Amotech Co., Ltd., Incheon, KR;
Byung Soo Kim, Incheon, KR;
Jong Hwa Shin, Incheon, KR;
AMOTECH CO., LTD., Incheon, KR;
Abstract
Provided is a hollow swivel actuator including: a lower housing in which a driving motor is arranged; and an upper housing in which three gear trains and three pinion gear units for reduction are arranged at intervals of 120 degrees. A rotor worm gear for transferring an output of the driving motor is coupled through gear engagement to a ring gear integrally formed on a rotational table to transfer reduced rotational power therebetween. The hollow swivel actuator obtains a great reduction ratio by: primary reduction between the rotor worm gear of the driving motor and first to third worm wheels of the first to third gear trains; secondary reduction between first to third worm gears and fourth to sixth worm wheels of the first to third pinion gear units; and tertiary reduction between the ring gear and the first to third pinion gears, thereby achieving a large torque increase.