Transmission shifting mechanism with spring loaded ball screw

Details Transmission shifting mechanism with spring loaded ball screw Transmission shifting mechanism with spring loaded ball screw

1994-07-27

1995-10-24

Marmor, Charles A.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

74 8915, 74375, 192 84C, 192109A, F16H 5904

Patent

active

054600600

ABSTRACT:
A transmission shifting system for axially displacing a shift fork in response to an electrical signal using a ball ramp actuator to load a spring disposed between the ball ramp actuator and the shift fork where an electrical coil is energized to induce an electromagnetic field in a drive flange connected to a rotating driveshaft which causes the ball ramp actuator to axially expand thereby preloading the spring and causing a jaw clutch to be axially displaced by the shift fork to rotationally engage a transmission gear.

REFERENCES:
patent: 2214901 (1940-09-01), Griffin
patent: 2307676 (1943-01-01), Harlan
patent: 2492205 (1949-12-01), Warner
patent: 3611823 (1971-10-01), Richards et al.
patent: 4291586 (1981-09-01), Buetemeister
patent: 4425814 (1984-01-01), Dick
patent: 4428248 (1984-01-01), Broucksou et al.
patent: 4449416 (1984-05-01), Huitema
patent: 4494419 (1985-01-01), Inui et al.
patent: 4498350 (1985-02-01), Ross
patent: 5408898 (1995-04-01), Steeby et al.

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