| 摘要 |
<p>An apparatus for controllably actuating an electrical device in response to movement of a control member is useful, for example, in an industrial vehicle, including a chassis (16), a power supply (14) electrically isolated from the chassis (16), and a steering assembly (18) having a rotatably connected steering wheel (20). The subject apparatus (10) includes a control member (26) mounted on and rotatable with the steering wheel (20). Excitation means (28) is provided for supplying a predetermined excitation signal to receiving means (32) which responsively produce a control signal. Means (34) is also provided for modifying the control signal in response to a predetermined movement of the control member (26). Controllable means (52) actuate and deactuate the electrical device in response to receiving the control and modified control signals. Thus, the apparatus (10) controllably actuates the electrical device while maintaining the modifying means (34) electrically isolated from the power supply (14). The steering wheel (20) is free to rotate without interconnecting wires or slip rings.</p> |
