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Patent
D898557
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Priority
Jul 10 2018
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Filed
Jul 10 2018
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Issued
Oct 13 2020
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Expiry
Oct 13 2035
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Assg.orig
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Entity
unknown
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3
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19
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n/a
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The ornamental design for a self drilling tapping screw, as shown and described.
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FIG. 1 is a perspective view of a self drilling tapping screw showing my new design.
FIG. 2 is a front view thereof.
FIG. 3 is a rear view thereof.
FIG. 4 is a side view thereof.
FIG. 5 is a bottom view thereof.
FIG. 6 is a top view thereof; and,
FIG. 7 is an enlarged view of the self drilling tapping screw taken from the indication circle of FIG. 1.
The broken lines in the drawings illustrate portions of the self drilling tapping screw and form no part of the claimed design.
Chen, Yung Ming
Patent |
Priority |
Assignee |
Title |
3079831, |
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4599024, |
Jan 18 1978 |
Kabushiki Kaisha Yamashina Seikosho |
Entering end portion of drill screw |
4948306, |
Aug 08 1987 |
ADOLF WURTH GMBH & CO KG, A CORP OF FED REP OF GERMANY |
Drill |
5074729, |
Jul 23 1990 |
Kokubu Kagaku Kogyo Co., Ltd. |
Drill screw having cutting edges each forming an arc curving to a head side |
5171186, |
Apr 05 1991 |
ASIA FASTENING US , INC |
Method of manufacture of a long point drill screw |
5382195, |
Dec 22 1992 |
Atlas Bolt & Screw Company |
Method for making a self-drilling and self-tapping screw |
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Date |
Maintenance Fee Events |
n/a
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Maintenance Schedule |
n/a