Ball screw
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Description
The broken lines in the drawings illustrate portions of the ball screw which form no part of the claimed design.
Claims
The ornamental design for a ball screw, as shown and described.
Referenced Cited
Patent History
Patent number: D745815
Type: Grant
Filed: May 29, 2013
Date of Patent: Dec 22, 2015
Assignees: Kuroda Precision Industries Ltd. (Kawasaki-shi, Kanagawa), Y.M. Laboratory Co., Ltd. (Kawasaki-shi, Kanagawa)
Inventors: Toshiaki Ohno (Kimitsu), Katsuhiko Sato (Sagamihara)
Primary Examiner: Ian Simmons
Assistant Examiner: Harold Blackwell, II
Application Number: 29/456,132
Type: Grant
Filed: May 29, 2013
Date of Patent: Dec 22, 2015
Assignees: Kuroda Precision Industries Ltd. (Kawasaki-shi, Kanagawa), Y.M. Laboratory Co., Ltd. (Kawasaki-shi, Kanagawa)
Inventors: Toshiaki Ohno (Kimitsu), Katsuhiko Sato (Sagamihara)
Primary Examiner: Ian Simmons
Assistant Examiner: Harold Blackwell, II
Application Number: 29/456,132
Classifications
Current U.S. Class:
D8/51