Deere & Company

Brian J Althoff

Nathan Joseph Horstman

Sean Patrick West

Reginald M Bindl

John R Mahrenholz

Donald Orville Johannsen

Todd R Simms

Bradley C Dauderman

Russell R Reeg

Stephan E Bohner

Lawrence William Bergquist

Chris J Schaub

Zachary T Flatley

Denis J Roling

James Luong

Kyle S Droessler

Stephan Ernst Bohner

James Hung Luong

Donald O Johannsen

An active track-chain sag management system for usage in conjunction with crawler vehicles having tracked undercarriages includes a movable track-engaging member positioned for physical engagement into a track-chain of the tracked undercarriage, an electric drive assembly controllable to adjust a track-tensioning position of the movable track-engaging member relative to the track-chain, and a controller operatively coupled to the electric drive assembly. The controller is configured to command the electric drive assembly to repeatedly adjust the track-chain sag of the track-chain by varying the track-tensioning position of the movable track-engaging member during operation of the tracked undercarriage.

Active track-chain sag management systems for crawler vehicles

A hydraulic flushing system comprises a hydraulic machine including a case drain, a gearbox having a cavity, and a flushing valve. The case drain is included in a hydraulic pump or a hydraulic motor. The flushing valve is fluidly connected to the case drain, fluidly connected to the cavity, and fluidly positioned between the case drain and the cavity. The flushing valve is configured to selectively allow hydraulic fluid to flow from the case drain to the cavity.

Hydraulic flushing system and method

A coupler pin couples an output sleeve of rotary unit to an input member of a rotary sensor with interference fits. The coupler pin has a first part and a second part. A key groove is formed in an inner surface of a coupling bore in the output sleeve. The first part is received by the coupling bore, and the first part has a key member which is received by the key groove. The second part has a key slot formed therein. The input member has a key. The key has a slip fit with a first part of the key slot and has an interference fit with a second part of the key slot. The key projects inwardly from a wall of a coupling bore in the input member. The second part is divided into a plurality of sections by axially extending cross-cuts.

Coupler assembly

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Dubuque, IA, United States of America

Brian J Althoff