Indicator system for a power tool comprising dual purpose cam sh

Details Indicator system for a power tool comprising dual purpose cam sh Indicator system for a power tool comprising dual purpose cam sh

1981-08-07

1984-04-17

Bray, W. D.

Cutting by use of rotating axially moving tool

With control means energized in response to activator...

To control tool rotation

74393, 82 29R, 408 6, 408 16, B23B 3904

Patent

active

044431376

ABSTRACT:
An electronic power tool provided with a microprocessor operated speed control system and having a multiple gear reduction drive mechanism is provided with a gear ratio indicator system employing a dual purpose cam shaft for coordinating the mechanical gear shifting and electrical microprocessor systems. The cam shaft is provided with a first cam element for performing the gear shifting function and a second cam element, operably interconnected with the first cam element for automatically moving a switch between positions corresponding to the gear engagement selected. The switch is electrically interconnected with the microprocessor to communicate the gear ratio selected thereto.

REFERENCES:
patent: 4208930 (1980-06-01), Hermann

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