Machine element or mechanism – Gearing – Interchangeably locked
Patent
1994-07-07
1996-04-16
Marmor, Charles A.
Machine element or mechanism
Gearing
Interchangeably locked
74477, 477138, F16H 5900
Patent
active
055071970
ABSTRACT:
This assisted selection system comprises an electrohydraulic actuator (12) which controls the input element of the gearbox and may itself be controlled by parameters provided by the engine control computer. The actuator (12) comprises a group of solenoid valves (34, 35, 37, 52, 53) connected to cylinders (15, 16, 41, 42) controlling a fork selecting shaft (13). The cylinders (15, 16) may cause the rotation of the shaft (13) by means of a rocker (14) for selecting the fork corresponding to the chosen ratio, and cause the shaft (13) to move in translation so as to engage the chosen ratio by displacement of the selected fork. This automatic selecting system, which is also applicable to gearboxes of the barrel type, permits, when coupled with the engine control computer, the driver to avoid effecting the declutching and clutching operations, while enabling him to fully master his selection of the speed, if he desires, with no loss due to slip.
REFERENCES:
patent: 3793898 (1974-02-01), Espenschied et al.
patent: 4993285 (1991-02-01), Asayama et al.
patent: 5044216 (1991-09-01), Steeby et al.
patent: 5092200 (1992-03-01), Asayama et al.
Devaud Gerard
Grand Serge
Kwon Peter
Marmor Charles A.
S.A.M.M. Societe d'Applications des Machines Motrices
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