IP Library › Granted Patent US 12669144
Granted Patent B2
US 12669144 · App. 18/385,359 · Granted Jun 30, 2026

Threaded fastener

Inventor: Yu-Min Chen (Kaohsiung, TW)
F16B33/02F16B19/05F16B19/1045
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Quick Facts
Patent No.
US 12669144
App. No.
18/385,359
Granted
Jun 30, 2026
Kind
B2
Abstract

A fastener includes a bolt including a head and a threaded shank including a bare section proximate the head, an end section having a wider end and having a plurality of alternate grooves and ridges, an intermediate section proximate the end section and having a spiral trough, and a threaded section between the intermediate section and the bare section; and a hollow member including a head member and a malleable shank having a plurality of holes. The end section is tapered toward the intermediate section at an angle of 3-degree to 8-degree.

Claims (4)

1 . A fastener, comprising;

a bolt including a head and a threaded shank including a bare section proximate the head, an end section having a plurality of alternate grooves and ridges, an intermediate section proximate the end section and having a spiral trough, and a threaded section between the intermediate section and the bare section; and

a hollow member including a head member and a malleable shank having a plurality of holes;

wherein the end section is tapered toward the intermediate section at an angle of 3-degree to 8-degree.