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:
Dec. 10, 2024
Filed:
Mar. 02, 2021
Applicant:
Caterpillar Sarl, Geneva, CH;
Inventors:
Steven Johnson, Metamora, IL (US);
Adam J. Adeeb, Seaham, GB;
Samantha L. Sergott, Dunlap, IL (US);
Umakanth Sakaray, Dunlap, IL (US);
Assignee:
Caterpillar SARL, Geneva, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01P 7/04 (2006.01); B60K 11/04 (2006.01); B60K 11/06 (2006.01); F01P 5/04 (2006.01);
U.S. Cl.
CPC ...
F01P 7/044 (2013.01); B60K 11/04 (2013.01); F01P 5/04 (2013.01);
Abstract
Two cooling fans acting on different heat exchangers may be driven via parallel circuits from a variable displacement hydraulic pump. At least one of the circuits includes a two position valve operable by a control system to vary the flow resistance of the circuit to share the flow between the two fan motors responsive to the relative heat load on the heat exchangers. The pump displacement is controlled to provide a constant hydraulic output pressure irrespective of the operational state of the or each valve assembly.