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:
May. 31, 2022
Filed:
Mar. 24, 2021
Nabtesco Corporation, Tokyo, JP;
Toshiya Akami, Tokyo, JP;
NABTESCO CORPORATION, Tokyo, JP;
Abstract
A hydraulic drive device according to an embodiment includes a main pump and a single pressure gauge. The main pump controls discharge flow rates of a first hydraulic oil and a second hydraulic oil discharged into two or more first pressure oil supply passage and second pressure oil supply passage with a single swash plate. The main pump is a swash plate variable displacement type split flow hydraulic pump. The pressure gauge measures an intermediate pressure of the discharged fluid at a merging point between the first pressure oil supply passage and the second pressure oil supply passage. The discharge flow passage is controlled based on a pressure value obtained by the pressure gauge.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile