Keyboard controlled multi-function power tool with visual displa

Details Keyboard controlled multi-function power tool with visual displa Keyboard controlled multi-function power tool with visual displa

1989-05-19

1992-04-14

Shoop, Jr., William M.

Electricity: motive power systems

Plural diverse motor controls

Running-speed control

388809, H02P 700

Patent

active

051051303

ABSTRACT:
A multi-function hand-held power tool includes an electric motor for driving a tool holder and control means for energizing the motor in accordance with a selected combination of operating conditions under which the tool is to be used. Located on the housing of the tool is a keyboard for inputting to the control means information to define the selected combinations of conditions. The keyboard has a first single key for selecting a tool function, for example drilling, from a defined range of tool functions, a second single key from selecting a required workpiece material for example wood, from a defined range of workpiece materials, and two further keys for selecting, from a defined range, another parameter, for example drill size, appropriate to the selected tool function. A visual display also located on the tool housing is energizable to show symbols indicative of the selected combination of operating conditions.

REFERENCES:
patent: 4237408 (1980-12-01), Frecks
patent: 4412158 (1983-10-01), Jefferson et al.
patent: 4513381 (1985-04-01), Houser, Jr. et al.
patent: 4571687 (1986-02-01), Fukuyam et al.
patent: 4636961 (1987-01-01), Bauer
patent: 4673318 (1987-06-01), Hornung et al.
patent: 4689534 (1987-08-01), Gerber et al.
patent: 4791344 (1988-12-01), Yoshida et al.

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