Operation safety device for a portable power tool
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 9, 1993
Grant Date -
N/A
app pub date -
Nov 15, 1991
filing date -
Nov 16, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power miter box includes a power driven blade which is lowered onto a workpiece. A main switch must be actuated manually by an operator to drive the blade. A separate safety switch operates to prevent the blade from being driven until it has been lowered onto the workpiece. The safety switch is operated by relative movement occurring between two guard members which encompass the blade.
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Family
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Cited Art Landscape
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