Deere & Company

Eric T Lammers

Allan N Schott

Joel R Brummer

Blake A Metz

David G Reid

Roman Cisek

Scott R Wiens

Brian E Biles

A power take-off (PTO) arrangement is provided for transferring power between a work vehicle and an implement. The PTO arrangement includes a PTO shaft having a PTO flange; and a PTO transmission unit having an input shaft coupled to the work vehicle, an output shaft coupled to the PTO shaft, and a gear set coupling the input shaft to the output shaft such that the power is transferred at a speed ratio selected from at least two speed ratios. A PTO speed control system has a sensor arrangement proximate to the PTO shaft and configured to sense data associated with the PTO flange and generate a PTO flange output signal based on the PTO flange data and a control unit and configured to selectively enable and disable operation of the PTO arrangement based on the PTO flange output signal and the selected speed ratio.

PTO speed control system for work vehicle

A power take-off (PTO) transmission unit transfers power between an input shaft and an output shaft. A gear set selectively couples the input shaft to the output shaft. A shift device includes a shift rail with ends forming inner pistons within chambers. The shift rail is configured to translate between first, second, and third positions based on the pressures of the chambers. Inner pistons nest within the outer pistons in the chambers. A shift fork and shift collar translate with the shift rail to, in the first position, engage the gear set such that power is transferred at a first speed ratio; in the second position, engage the gear set such that power is transferred at a second speed ratio; and in the third position, engage the gear set to provide a neutral mode in which the output shaft is free to rotate relative to the input shaft.

Power take-off arrangement for work vehicle

A seal installation guide sleeve for installing a radial lip seal onto a shaft. The radial lip seal includes a flexible sealing lip. The guide sleeve includes a cylindrical lip engaging surface, and includes an annular flange portion extending from the cylindrical lip engaging surface. The guide sleeve also includes a plurality of tabs extending from the annular flange portion. The guide sleeve is pre-installed in the radial lip seal such that the flexible sealing lip engages the cylindrical lip engaging surface, thereby protecting the flexible sealing lip from damage as the radial lip seal is installed onto the shaft.

Seal installation guide sleeve

A high speed gearbox includes a housing which encloses a rotating gear and a volume which contains oil and air. The gear has an outer first surface exposed to the volume and has a second surface exposed to the environment. A vent arrangement includes first and second passages formed in the gear. The second passage extends axially part way into the gear and has an outer end exposed to the second surface. The first passage extends radially from the first surface to the second passage. A check valve is mounted in the second passage and permits one-way flow of air from the volume to the environment.

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Cedar Falls, IA, United States of America

Eric T Lammers