Multiple stage gearbox shiftable under load

Details Multiple stage gearbox shiftable under load Multiple stage gearbox shiftable under load

1985-04-22

1987-02-10

Braun, Leslie

Machine element or mechanism

Gearing

With fluid drive

74720, F16H 4700

Patent

active

046415491

ABSTRACT:
A change spur gear of reducer unit design features two paths of force. The first path of force comprises a unit which provides gearing to high speed, a hydrodynamic torque converter and, following it, a multiple shift gear. The second path of force comprises as well a unit which provides gearing to high speed, on the high speed shaft of which there is a hydrodynamic servoclutch arranged. The secondary vane wheel connects through appropriate reducers with the transmission output. In shifting from one gear to another, the servoclutch is filled first, then the respective shift detent is disengaged under no load, the servoclutch is adjusted to the slip corresponding with the next gear thereby enabling a no-load shifting of the detent of the next gear. Upon emptying of the servoclutch, the engine moment is again assumed by the first path of force without any interruption of the traction force.

REFERENCES:
patent: 2397634 (1946-04-01), Voytech
patent: 3065653 (1962-11-01), Suri
patent: 3176544 (1965-04-01), Baumeister
patent: 3555931 (1971-01-01), Polzer
patent: 3671814 (1972-06-01), Dick
patent: 3683719 (1972-08-01), Gros
patent: 3749209 (1973-07-01), Weinrich et al.
patent: 4041809 (1977-08-01), Dick et al.
patent: 4169414 (1979-10-01), Muller
patent: 4391096 (1983-07-01), Polzer et al.
patent: 4471670 (1984-09-01), Muller

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