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. 22, 2020
Filed:
Nov. 09, 2012
Hydac Fluidtechnik Gmbh, Suizbach/Saar, DE;
Frank Schulz, Blieskastel-Bierbach, DE;
Peter Bruck, Althornbach, DE;
HYDAC FLUIDTECHNIK GMBH, Sulzbach/Saar, DE;
Abstract
A hydraulic hybrid system for rotatory applications has an actuator () in the form of a motor pump unit (). The motor pump unit is coupled to a rotatory-operating device () and works as a consumer of hydraulic energy in one operating state of the device () and works as a producer of hydraulic energy in another operating state of the device (). A hydraulic accumulator () can be charged by the motor pump unit () for energy storage in the one operating state and can be discharged for energy release to the motor pump unit () in the other operating state. The hydraulic accumulator is an adjustable hydropneumatic piston accumulator () in which a plurality of pressure chambers () are delimited by active surfaces () of different sizes on the fluid side of the accumulator piston (). An adjusting arrangement () connects a selected pressure chamber () or a plurality of selected pressure chambers () of the piston accumulator () to the actuator () depending on the prevailing pressure level on the gas side of the piston accumulator () and at the actuator ().