Multi-purpose spade
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United States of America Patent
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Nov 22, 2011
Grant Date -
Dec 9, 2010
app pub date -
Jun 5, 2009
filing date -
Jun 5, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A multi-purpose spade includes a central plate, first and second edge plates, and a retreating crescent blade. The central plate is generally concave. The retreating crescent blade is formed along the tip portions of the central plate and the first and second plates. The inner edge portions of the first and second plates are connected to corresponding side portions of the central plate with a predetermined angle so as to form two crest portions on the front surfaces along the side portions of the central plate. The multi-purpose spade may further comprise an extending blade configured to be connected to the retreating crescent blade.
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