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. 15, 1998
Filed:
Mar. 03, 1997
Randy R Hayward, Mapleton, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A gear dependent manual modulation transmission control strategy is provided in a machine having an inching control arrangement so that during inching control operation the pressure of the fluid being directed to the selected clutches verses the displacement of the inching pedal can be changed relative to the selected gear ratio. This is accomplished by disposing a solenoid actuated manual modulation valve between a source of pressurized fluid and certain ones of the fluid actuated clutches and a controller operating to change the pressure relationship by changing the magnitude of the signal to the solenoid actuated manual modulation valve upon receiving a signal from a shift lever indicating a different pre-selected gear ratio.