Hand tool driven by DC battery with multiple level battery condition indicator
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United States of America Patent
Stats
-
Mar 8, 1994
Grant Date -
N/A
app pub date -
Feb 10, 1992
filing date -
Feb 15, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A hand tool driven by a DC battery comprises a tool driving section having a motor, a DC source connected to the tool driving section, a plurality of LEDs connected to the DC source, an LED turning-off section for sequentially turning off the LEDs in accordance with the power remaining in the DC source, and an LED flickering section for causing flickering of at least one illuminated LED, when the driving section is overloaded.
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Cited Art Landscape
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