Dual clutch multiple countershaft transmission

Details Dual clutch multiple countershaft transmission Dual clutch multiple countershaft transmission

1981-12-23

1984-07-24

Braun, Leslie A.

Machine element or mechanism

Gearing

Interchangeably locked

74331, 74356, F16H 308

Patent

active

044611889

ABSTRACT:
First and second concentric input shafts are connected to an engine crankshaft through friction clutches, one for each input shaft. Two countershafts carrying forward speed ratio and reverse drive output gears are driven from pinions carried by each of the input shafts. Synchronizer clutches connect the output gears to the respective countershafts. The first forward speed output gear is mounted on its countershaft by way of an overrunning clutch. One forward speed output gear is continuously engaged with the reverse drive output gear and functions as a reverse idler for changing the direction of rotation of the countershaft when reverse drive is selected.

REFERENCES:
patent: 2386540 (1943-10-01), Campodonico
patent: 2386541 (1943-10-01), Campodonico
patent: 2416154 (1947-02-01), Chilton
patent: 2599801 (1949-05-01), Youngren et al.
patent: 2612787 (1952-10-01), Youngren et al.
patent: 2862398 (1958-12-01), Zeidler et al.
patent: 3046807 (1962-07-01), Barth et al.
patent: 3589483 (1971-06-01), Smith
patent: 4000662 (1977-01-01), Wolfe
patent: 4106364 (1978-08-01), Zenker et al.
patent: 4116082 (1978-09-01), Kelbel
SAE Paper No. 810104, "A Fully Automatic Vehicle Transmission Using A Layshaft Type Gear Box", by Harry Webster, Feb. 23-27, 1981.

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