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Patent
D745815
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Priority
Nov 30 2012
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Filed
May 29 2013
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Issued
Dec 22 2015
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Expiry
Dec 22 2029
TERM.DISCL.
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Assg.orig
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Entity
unknown
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3
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4
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The ornamental design for a ball screw, as shown and described.
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FIG. 1 is a left perspective view of a ball screw;
FIG. 2 is a right perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top view thereof;
FIG. 8 is a bottom view thereof;
FIG. 9 is a cross-sectional view thereof taken along line X-X in FIG. 8; and,
FIG. 10 is a cross-sectional view thereof taken along line XI-XI in FIG. 8.
The broken lines in the drawings illustrate portions of the ball screw which form no part of the claimed design.
Sato, Katsuhiko, Ohno, Toshiaki
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