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:
Jan. 27, 2026
Filed:
Jul. 24, 2024
Caterpillar Inc., Peoria, IL (US);
Pengfei MA, Naperville, IL (US);
Allan S. Thunes, Apex, NC (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A hydraulic pump circuit for a hydraulic system on a work machine may include a variable displacement pump in fluid communication with a hydraulic system via a supply line on a work machine. The variable displacement pump may be configured to provide hydraulic fluid flow to the hydraulic system. The hydraulic pump circuit may also include a stroke actuator in fluid communication with the supply line via a restriction orifice and may be configured for controlling the displacement volume of the variable displacement pump. The hydraulic pump circuit may also include a control valve configured for controlling the stroke actuator to upstroke and de-stroke the pump. The hydraulic pump circuit may also include a cutoff valve arranged and configured to de-stroke the pump when a threshold pressure develops within the hydraulic system.