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. 05, 2023
Filed:
May. 23, 2022
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Masayuki Ishizuka, Kanagawa, JP;
Mitsuhiro Tamura, Kanagawa, JP;
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A reduction gear includes a reduction mechanism and a component which constitutes the reduction gear and in which a cavity portion is provided. The reduction mechanism is not provided in the cavity portion. The component includes a reinforcement structure which is provided to partially fill an inside of the cavity portion and forms a void, which is filled with air or fluid, in the cavity portion. The cavity portion includes only one opening with respect to a space in which the reduction mechanism is accommodated or with respect to an external space, or the cavity portion is provided so as to form a closed space inside the component.