Electricity: motive power systems – Battery-fed motor systems
Reexamination Certificate
2007-08-14
2007-08-14
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Battery-fed motor systems
C180S199000, C180S202000
Reexamination Certificate
active
10548499
ABSTRACT:
This invention is a “four-direction moving” structure that can move in all four directions without turning first. It contains two groups of wheels that are arranged perpendicular to one another, i.e. four rows of wheels form a quadrate. Within each group, the wheels turn in the same direction. The conventional circular wheels are replaced with circular eccentric or elliptical or noncircular (e.g. polygonal) wheels so that one group of wheels will not impede movement when the other group of wheels is turning by virtue of the longer diameter of the turning wheels.
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Hamre, Schumann, Mueller and Larson, P.C.
Ro Bentsu
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