Speed forward, 12 speed reverse powershift transmission

Details Speed forward, 12 speed reverse powershift transmission Speed forward, 12 speed reverse powershift transmission

1990-09-06

1991-11-12

Hermann, Allan D.

Machine element or mechanism

Gearing

Interchangeably locked

74331, F16H 308

Patent

active

050637932

ABSTRACT:
The present invention provides a 24 forward speed, 12 reverse speed transmission for use in a work vehicle, e.g., an agricultural or industrial tractor. The transmission uses 10 clutches, with six arranged in a speed section and four in a range section. The speed section arrangement can provide six forward and three reverse speeds, while the range section can provide four ranges. Optionally, the transmission may be provided with a selectively engageable power take-off shaft and a selectively engageable front wheel drive take-off. The entire structure provides a very small speed change requirement between the diffrent gear ratios.

REFERENCES:
patent: 3102432 (1963-09-01), Gerst
patent: 3181385 (1965-05-01), Siler
patent: 3318167 (1967-05-01), Frost
patent: 3675508 (1972-07-01), Blank
patent: 3916710 (1975-11-01), Sisson et al.
patent: 4392391 (1983-07-01), Jameson et al.
patent: 4549443 (1985-10-01), White
patent: 4589295 (1986-05-01), Jerry et al.

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