Transfer case planetary with annulus gear power takeoff

Details Transfer case planetary with annulus gear power takeoff Transfer case planetary with annulus gear power takeoff

1988-12-15

1989-09-05

Braun, Leslie A.

Machine element or mechanism

Power take-off

Intermediate ends of power transmitting line

74789, F16H 378, F16H 344

Patent

active

048627550

ABSTRACT:
An improved power takeoff arrangement for a vehicle four-wheel drive transfer case having high, neutral and low positions. The transfer case input shaft has a integral gear member defining the sun gear of a dual planetary gear assembly having its carrier rings grounded to the transfer case housing. A planetary annulus gear, formed with an inboard axial extension concentrically surrounding the inboard carrier ring, is driven by dual planet pinion gear sets journally supported between the carrier rings. The annulus gear inboard extension is formed with external helical gear teeth adapted to mesh with a power takeoff input gear accessible through an aperture in the housing side wall. The arrangement enables power at a constant relative speed to be transferred from the transfer case input shaft to the power takeoff gear in any of its three positions while obviating unbalanced loading of the dual pinion planetary assembly.

REFERENCES:
patent: 2749756 (1956-06-01), George
patent: 2960880 (1960-11-01), Wagner
patent: 3296895 (1967-01-01), Karlsson
patent: 3406579 (1968-10-01), Fisher et al.
patent: 4440042 (1984-04-01), Holdeman
patent: 4604908 (1986-08-01), Dolan
patent: 4640153 (1987-02-01), Brogdon et al.
patent: 4677873 (1987-07-01), Eastman et al.

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