Self-tapping screw
AssigneeTycoons Group Enterprise Co., Ltd.
InventorPang-Hsiu Yen
Life of this patent
Estimating the term…
Abstract
A self-tapping screw includes a screw head, a screw shank having a shank body extending from the screw head along an axis, a self-tapping thread extending helically around an outer peripheral surface of the shank body and having a plurality of cutting edges continuously connected to one another and extending outwardly, radially and taperingly from the outer peripheral surface of the shank body, and a supporting unit including a plurality of supporting teeth each disposed between two adjacent ones of the cutting edges, and a plurality of concave surfaces respectively adjacent to the supporting teeth and extending inwardly from the outer peripheral surface of the shank body.
Claims6
A self-tapping screw comprising:
- a screw head having a tool groove for a driving tool to engage detachably therewith;
- a screw shank including a shank body extending from said screw head along an axis, and a drilling end section extending outwardly and taperingly from one end of said shank body which is distal to said screw head;
- a self-tapping thread extending helically around an outer peripheral surface of said shank body and having a plurality of cutting edges continuously connected to one another and extending outwardly, radially and taperingly from said outer peripheral surface of said shank body;
- and
- a supporting unit including a plurality of supporting teeth spaced apart from each other along the axis, and a plurality of concave surfaces respectively adjacent to said supporting teeth and extending inwardly from said outer peripheral surface of said shank body, each of said supporting teeth being disposed between two adjacent ones of said cutting edges, and extending radially, outwardly and taperingly from said outer peripheral surface of said shank body, each of said concave surfaces defining a connecting groove.
Dependencies are inferred from the claim text.