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. 24, 2019
Filed:
Sep. 09, 2016
Danfoss Power Solutions G.m.b.h & Co. Ohg, Neumünster, DE;
Reinhardt Thoms, Holzbunge, DE;
Danfoss Power Solutions G.m.b.H & Co. OHG, Neumünster, DE;
Abstract
A Control unit of a hydraulic unit comprises a control piston slidable arranged in a control cylinder to provide a hydraulic fluid under servo pressure at a first outlet of the control unit suitable for the displacement of the hydraulic unit. The servo pressure is proportional to a sum of the inner forces of the hydraulic unit and the operational forces act on the control unit. The hydraulic fluid provided at the outlet is fed by a charge pressure supply at charge pressure at an inlet of the control unit. The control piston has a blind bore in the direction of a longitudinal axis of the control unit, in which a pressure relief valve is arranged functioning as a pilot-control unit having a two-sided pressure relief piston arranged in the blind bore and slidable relative to the control piston by means of an actuator.