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:
Apr. 25, 2017
Filed:
Feb. 09, 2016
Wacker Neuson Production Americas Llc, Menomonee Falls, WI (US);
Scott Grahl, Campbellsport, WI (US);
Michael Jenkins, Menomonee Falls, WI (US);
Wacker Neuson Production Americas LLC, Menomonee Falls, WI (US);
Abstract
A hydrostatically power self-propelled concrete finishing trowel has at least two coolers in a cooling system of the machine's hydraulic circuit. In the most typical case in which the first cooler is a closed loop oil cooler, the second cooler may take the form of an open loop oil cooler disposed in a flow path connecting one or more low-pressure outlets of the hydrostatic drive system to a reservoir. The closed loop oil cooler actively drops the temperature within the trowel's hydrostatic drive system, while the open loop oil cooler supplements that cooling by reducing the oil temperature in the reservoir.