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:
Jul. 15, 2025
Filed:
May. 18, 2022
Maxell Izumi Co., Ltd., Matsumoto, JP;
Keiichiro Kamijo, Matsumoto, JP;
Katsutoshi Kochiyama, Matsumoto, JP;
MAXELL IZUMI CO., LTD., Matsumoto, JP;
Abstract
An electric tool is configured that oil pressure can be rapidly increased while suppressing the load on a motor. The electric tool includes a main body in which a cylinder part, a hydraulic pump for feeding hydraulic oil to the cylinder part and an electric motor are disposed, and a tool head operated by a pressing force of a piston in the cylinder part. The hydraulic pump has a swash plate cam, a first plunger, a second plunger, a check valve and a relief valve, and until the pressure reaches the first pressure, a first liquid feeding amount of the first plunger is increased than a second liquid feeding amount of the second plunger.