Apparatuses and methods for controlling a variable speed...

Details Apparatuses and methods for controlling a variable speed... Apparatuses and methods for controlling a variable speed...

2004-07-30

2010-12-14

King, Bradley T (Department: 3657)

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Load responsive

C474S008000, C474S011000, C474S021000, C474S037000, C056S011800

Reexamination Certificate

active

07850555

ABSTRACT:
Apparatuses and methods are disclosed for controlling a variable speed transmission including an actuator, a cam follower, and a speed adjustment cam. The actuator is rotatable through a first phase and a subsequent second phase, and includes an actuator cam surface and a variator. The cam follower is movable in response to contact with the actuator cam surface during rotation through the first phase, for actuating a coupler of the transmission between a disengaged position and an engaged position. The variator is movable along the speed adjustment cam during rotation through the second phase for enabling adjustment of a torque transfer mechanism associated with the transmission. By this configuration, control over the coupling of the transmission to a torque input such as a motor and control over the speed of the transmission are both enabled through rotation of a single actuator, and thus can be implemented in a self-propelled machine such as a lawnmower using a single operator-manipulated control.

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