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:
Mar. 19, 2019
Filed:
Oct. 28, 2011
Mark D. Michaud, Austin, TX (US);
Gary J. Sroka, Missouri City, TX (US);
Ronald E. Benson, Spring, TX (US);
Lane Winkelmann, New Ulm, TX (US);
Mark D. Michaud, Austin, TX (US);
Gary J. Sroka, Missouri City, TX (US);
Ronald E. Benson, Spring, TX (US);
Lane Winkelmann, New Ulm, TX (US);
REM Technologies, Inc., Brenham, TX (US);
Abstract
A wind-turbine gearbox system includes an input gear stage having mating gear surfaces finished to a surface roughness of less than 0.25 micron and at least one bearing supporting the input gear stage. A lubrication circuit is arranged to deliver lubricant to the input gear stage and the bearing during operation of the wind-turbine and includes an inline filter for removal of particles of less than 2 micron from the lubricant prior to delivery. A lubricant for use in the system may have a relatively low viscosity compared to conventional wind turbine gearbox lubricants.