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:
Feb. 17, 2026
Filed:
Oct. 08, 2024
Hawe Hydraulik SE, Aschheim, DE;
HAWE Hydraulik SE, Aschheim, DE;
Abstract
A hydraulic system for the pitch angle adjustment of a rotor blade of a wind turbine) includes a variable displacement pump, a hydraulic accumulator, a dynamic valve, a control valve, a tank and a pitch cylinder. The variable displacement pump is connected to the control valve via a first connecting line and the control valve is connected to the tank via a second connecting line and to a piston side of the pitch cylinder via a third connecting line and to a rod side of the pitch cylinder via a fourth connecting line. In a first switching position, the first connecting line is connected to the third connecting line and in a second switching position, the first connecting line is connected to the fourth connecting line and the second connecting line is connected to the third connecting line.