Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Plural – diverse motor controls
Patent
1974-01-15
1976-01-20
Schaefer, Robert K.
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Plural, diverse motor controls
180 65, B62D 1104
Patent
active
039341810
ABSTRACT:
The control system includes a plurality of light responsive devices and a mask structure having a part which is movable with respect to the devices to control the transmission of light thereto. The movable part of the mask structure may be a ball-like member, which is universally supported in a spherical receptacle which supports the light responsive devices. Four light responsive devices may be used, with the mask structure having a portion with a variable width slot associated with each device, so that as the ball-like member is pivoted universally to control the light transmitted through the slots to the devices, electrical signals are produced which represent the movement. The light responsive devices have an electrical characteristic which changes with the light applied thereto to produce electrical signals, and are connected in a control circuit so that signals therefrom control apparatus, such as drive units for controlling the movement of a device. The ball-like member can control switches connected in the circuit to control the direction of operation of the drive units.
REFERENCES:
patent: 3370293 (1968-02-01), Green
patent: 3582744 (1971-10-01), Coffey
patent: 3613813 (1971-10-01), Biddle
patent: 3811047 (1974-05-01), Ihragal
Redman John W.
Schaefer Robert K.
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