Linkage for controlling two independent power units

Details Linkage for controlling two independent power units Linkage for controlling two independent power units

1975-10-14

1977-09-20

Scott, Samuel

Machine element or mechanism

Mechanical movements

Rotary to or from reciprocating or oscillating

F16H 2512

Patent

active

040488624

ABSTRACT:
A linkage is provided to simultaneously control two independent hydraulic drive motors for a vehicle, each having a control arm movable between a high speed position and a low speed position. The linkage comprises a control shaft having a pair of spaced-apart cam elements mounted thereon which engage each of the control arms to pivot them in opposite direction as the shaft is rotated. The linkage is also movable in an axial direction which thereby insures that both control arms reach corresponding high or low speed positions. For instance, if one control arm should reach a respective position prior to the time the other control arm reaches its corresponding position, further rotation of the shaft and cam elements therewith also results in axial movement thereof thus insuring that such other control arm reaches its corresponding position.

REFERENCES:
patent: 313565 (1885-03-01), Whitbeck
patent: 2641418 (1953-06-01), Miller
patent: 2903895 (1959-09-01), Larsen
patent: 3170330 (1965-02-01), Reinecke
patent: 3662611 (1972-05-01), Knoll
patent: 3886789 (1975-06-01), Brookfield

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