Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Running-speed control
Patent
1988-12-12
1990-09-11
Ro, Bentsu
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Running-speed control
318 59, H02P 736
Patent
active
049565893
ABSTRACT:
A work station having a plurality of tools permits selection, operation and speed control of individually selected tools using a common speed control for each tool. Each of the tools includes a tool head such as a cutter, rasp, or other forming or finishing tool supported at the end of a flexible drive shaft rotatable by a motor. A free end portion of the drive shaft includes a holding portion to permit manipulation of the tool but by an operator. A set of berths is located at the work surface with each berth configured to receive respective end portions of the drive shafts. A switch is provided in each berth for electrically connecting each of the motors to the common speed control which is operable by a foot pedal for controlling the speed of a selected tool. Under this arrangement, an operator at the work station can manipulate any one of the work tools without the burden of manipulating the tool speed which is pedal controlled. Thus any selected number of tools are individually operable by a single speed control device.
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