Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1986-04-18
1987-04-21
Braun, Leslie
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74769, 74765, F16H 5710
Patent
active
046586725
ABSTRACT:
A multi-speed power shift transmission providing a total of six speeds including forward and reverse gears with a minimum of friction elements. The transmission uses one compound planetary assembly of the Ravigneaux type coupled to a simple planetary assembly. The planetary assemblies are joined by two simple interconnections which transfer power between the planetary sections. The transmission uses three brakes and two clutches to provide the total of six (6) speed changes. Connection of the planetary carrier of the compound planetary assembly to the ring gear of the simple planetary assembly and a primary sun gear of the compound planetary assembly to the sun gear of the simple planetary assembly provides four forward speeds and two reverse speeds. This interconnection arrangement between the two planetary assemblies also provides favorable power splitting across the planetary sections which will permit a reduction in the size of gear elements and other transmission components.
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New John Deere Industrial Transmission, SAE Paper 790524, by J. R. Harvey, John Deere Product Engineering Center, Waterloo, Iowa, Apr. 1979.
Information brochure published by Detroit Diesel Allison and dated 11/1983.
John Deere Power Shift Transmission, SAE Paper 739 A, by K. J. Harris and J. K. Jensen, John Deere Waterloo Tractor Works, Waterloo, Iowa, Sep. 1963.
Braun Leslie
Deere & Company
Wright Dirk
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