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:
Apr. 20, 1976
Filed:
Feb. 21, 1974
Sidney J Audifferd, Jr, Washington, IL (US);
James L Schmitt, Washington, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A control system for a drive train having an engine-driven power input member and auxiliary equipment associated therewith, a power output member, a hydraulically-operated slippable clutch coupling the power input member and power output member, the control system including a control valve operable in a first fluid flow condition to provide a maximum predetermined pressure level for fully engaging the clutch and a second fluid flow condition to provide an adjusted pressure level lower than the predetermined pressure level for partially engaging the clutch, and an override valve for selectively establishing either the first or second fluid flow conditions of the control valve and providing convenient changeover between the two power apportioning conditions of operation.