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:
Oct. 15, 2019
Filed:
Jan. 19, 2017
Twin Disc, Inc., Racine, WI (US);
Andrew D. Van Hoorn, Franklin, WI (US);
Gerald A. Matranga, Union Grove, WI (US);
Twin Disc, Inc., Racine, WI (US);
Abstract
A heavy-duty industrial transmission is provided that can be implemented in a frac pump system with planetary gearsets with straightforward shift methodologies, slow back-driven speeds, and no recirculating torque in any of the ranges. The heavy-duty transmission has a high number of ranges and may be configured with no reverse range, no countershaft, no overdrive range(s), small and consistent steps of ratios between ranges, and a deep or large reduction ratio of the lowest range, such as at least about a 5:1 reduction. The heavy-duty industrial transmission may have a four-stage planetary arrangement that is configured to provide nine (9) ranges for the transmission that only requires two double pack shifts, with the remaining shifts being single pack shifts.