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. 19, 2015
Filed:
Dec. 24, 2012
Valtra Oy Ab, Suolahti, FI;
Kimmo Kurkinen, Suolahti, FI;
Petri Hannukainen, Suolahti, FI;
Valtra Oy Ab, Soulahti, FI;
Abstract
A hybrid drive system for a utility vehicle () which operates with an internal combustion engine () and an electrical generator (), motor () and storage means (). Auxiliary hydraulic functions () may be powered by the electric motor (). An output of the engine () is mechanically coupled to a multi-ratio transmission () which has a hydrostatic driveline () and an output which is mechanically coupled to propulsion means. With the engine switched off, the electric motor powers a hydraulic pump () which generates pressurized fluid to operate auxiliary functions. In addition, the pressurized fluid may be exploited in a secondary propulsion mode to drive a hydraulic motor () in the hydrostatic transmission to propel the vehicle in a low emission, low noise output mode.