Sander

Details Sander Sander

2007-06-13

2009-02-03

Eley, Timothy V (Department: 3724)

Abrading

Precision device or process - or with condition responsive...

With indicating

C451S356000, C451S357000

Reexamination Certificate

active

07485026

ABSTRACT:
A sander can include a housing, an indicator coupled to the housing, and a motor assembly in the housing. The motor assembly can include an output member. A platen can be driven by the output member. A DC generator can be driven by the output member. The DC generator can generate an output signal with a voltage that is related to a rotational speed of the motor. A controller can operate the visual indicator based on the voltage of the output signal. According to additional features, the DC generator can provide electrical power to operate the indicator. An electric power input can be electrically coupled to the motor. The visual indicator can be electrically isolated from the electric power input.

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