Apparatus for facilitating gear changing in mechanical gearboxes

Details Apparatus for facilitating gear changing in mechanical gearboxes Apparatus for facilitating gear changing in mechanical gearboxes

1979-07-02

1981-09-08

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

74388R, 91368, 91391R, G05G 918, F15B 910

Patent

active

042877849

ABSTRACT:
A servo-supported gear changing apparatus for mechanical gearboxes. A rotatably and axially displaceable gear selector shaft in a gear selector housing is axially displaced, during a selecting step, to a preselected engagement position, and is turned to engage or disengage the appropriate gear by at least one gear selector mounted on the shaft. At least one torque-transmitting connection between the shaft and its lever has limited play in both directions, allowing in the initial engagement or disengagement stage a relative movement in the turning direction. A control valve then triggers a pressure-operated servo cylinder to perform the major gear changing work.

REFERENCES:
patent: 2893356 (1959-07-01), Murray
patent: 2926539 (1960-03-01), Leonard
patent: 3053102 (1962-09-01), Alfieri
patent: 3074291 (1963-01-01), Alfieri
patent: 3628403 (1971-12-01), Labat

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