Multi-speed transmission

Details Multi-speed transmission Multi-speed transmission

1987-09-25

1989-02-21

Wright, Dirk

Machine element or mechanism

Gearing

Interchangeably locked

74745, 74331, F16H 308, F16H 302

Patent

active

048054712

ABSTRACT:
A multi-speed transmission having a main section for providing a plurality of gear ratios and a range section for selectively mulitplying a gear ratio provided by the main section in which the reverse idler gear is not located on a separate idler shaft. The reverse idler gear is mounted on the range countershaft. This is made possible by overlapping or rotating the plane containing the main countershaft and main shaft with respect to the plane containing the range countershaft and the main shaft. The reverse idlere gears are positioned to be driven by a set of gears on the main countershafts and they drive a gear on the main shaft. The same relationship exists for a multiple countershaft transmission with a reverse idler gear on each range countershaft.

REFERENCES:
patent: 3088336 (1963-05-01), Fodrea
patent: 4065981 (1978-01-01), Whateley et al.
patent: 4461188 (1984-07-01), Fisher
patent: 4693129 (1987-09-01), Pierce

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