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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.:

US 12636628 B1

PDFFull Text
Date of Patent:
May. 26, 2026

Filed:

Nov. 24, 2021

Electrically driven oilfield blender system

Applicant:

Twin Disc, Inc., Racine, WI (US);

Inventor:

Edwin E. Wilson, Colleyville, TX (US);

Assignee:

Twin Disc, Inc., Racine, WI (US);

Attorney:

Boyle Fredrickson, S.C.

Primary Examiner:

Claire X Wang

Assistant Examiner:

Patrick M Mccarty

Int. Cl.
CPC ...
B01F 35/32 (2022.01); B01F 23/50 (2022.01); B01F 23/53 (2022.01); B01F 27/90 (2022.01); B01F 35/33 (2022.01); B01F 35/71 (2022.01); B01F 35/75 (2022.01); E21B 43/26 (2006.01); B01F 101/49 (2022.01);
U.S. Cl.
CPC ...
B01F 35/3204 (2022.01); B01F 23/51 (2022.01); B01F 23/53 (2022.01); B01F 23/59 (2022.01); B01F 27/90 (2022.01); B01F 35/32045 (2022.01); B01F 35/331 (2022.01); B01F 35/7176 (2022.01); B01F 35/71775 (2022.01); B01F 35/7544 (2022.01); E21B 43/2607 (2020.05); B01F 2101/49 (2022.01);
Abstract

An electrically driven oilfield blender system is configured to utilize electric motors as electric prime movers to prepare frac slurry and move the frac slurry to an oilfield pressure pumping system or pressure pumper that pumps the frac slurry into a subterranean formation. Each of the prime mover electric motors may operate at a fixed or constant rated speed and may be connected to a transmission that can drive a device such as a feed pump for a mixing tub or an auxiliary device at a variable speed. An electro-hydraulic motor start system includes an electric motor that powers a hydraulic pump. The hydraulic pump drives hydraulic motors that pre-rotate the prime mover electric motors to their rated speeds before they are energized.

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