Breakaway threaded fasteners
AssigneeHubbell Incorporated
InventorCharles L York, III
Life of this patent
Estimating the term…
Abstract
A breakaway threaded fastener is provided that includes a hollow stud, a pin, and a cap. The stud has a hollow cavity, a closed end, an open end with an upper surface, a wall, and an outer surface, which includes an external thread. The pin is in the hollow cavity with a first end at the closed end of the hollow stud and a second end proximate the open end of the hollow stud. The cap has another hollow cavity with a closed end, an open end, an inner surface, and an internal thread. The cap is threadably engaged to the open end of the hollow stud via the internal and external threads so that the second end of the pin abuts the inner surface of the cap with a gap remaining between the upper surface of the hollow stud and the inner surface of the cap.
Claims20
A breakaway threaded fastener, comprising:
- a hollow stud having hollow cavity, a closed end, an open end with an upper surface, a wall, and an outer surface, the outer surface having an external thread;
- a pin in the hollow cavity, the pin having a first end at the closed end of the hollow stud and a second end proximate the open end of the hollow stud;
- and
- a cap having another hollow cavity with a closed end, an open end, an inner surface, and an internal thread,
- the cap being threadably engaged to the open end of the hollow stud via the internal and external threads so that the second end of the pin abuts the inner surface of the cap with a gap remaining between the upper surface of the hollow stud and the inner surface of the cap,
- wherein the internal and external threads and the gap are configured so that the cap rotates no more than ¼ turn with respect to the hollow stud after contact between the top end of the pin and the bottom surface of the cap.
A breakaway threaded fastener, comprising:
- a hollow stud having hollow cavity, a closed end, an open end with an upper surface, a wall, and an outer surface, the outer surface having an external thread;
- a pin in the hollow cavity, the pin having a first end at the closed end of the hollow stud and a second end at the open end of the hollow stud, the second end being below the upper surface of the hollow stud;
- a cap having another hollow cavity with a closed end, an open end, an inner surface, and an internal thread, the cap being threadably engaged to the open end of the hollow stud via the internal and external threads so that the second end of the pin abuts the inner surface of the cap at a contact plane that is below the upper surface of the hollow stud.
Dependencies are inferred from the claim text.