Foreign material exclusion plug for structural threads with breakaway tab

Patent metadata

Field	Value
Publication number	US-11802584-B2
Application number	US-202016988846-A
Country	US
Kind code	B2
Filing date	Aug 10, 2020
Priority date	Aug 10, 2020
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

A foreign material exclusion plug is disclosed. The foreign material plug includes a cylindrical body, a slot, and a breakaway tab. The cylindrical body includes an externally-threaded cylindrical structure. The slot is formed in the cylindrical body extending into the cylindrical body from a top surface of the cylindrical body. The breakaway tab is connected to the cylindrical body and extends outwards from the top surface.

First claim

What is claimed is:

1. A foreign material exclusion plug, comprising:
a cylindrical body comprising an externally-threaded cylindrical structure having a top surface;
a slot formed in the top surface of the cylindrical body and extending into the cylindrical body; and
a breakaway tab removably coupled to the top surface of the cylindrical body and extending outwards from the top surface of the cylindrical body,
wherein the breakaway tab is oriented such that the breakaway tab crosses over the slot and is integrally connected to the cylindrical body on one of opposing sides and opposing ends of the slot.

2. The foreign material exclusion plug of claim 1 , wherein the breakaway tab is integrally formed with the cylindrical body as a unitary structure.

3. The foreign material exclusion plug of claim 1 , wherein the breakaway tab is adapted to break off from the cylindrical body at a base thereof, the base adjoining the top surface of the cylindrical body.

4. The foreign material exclusion plug of claim 3 , wherein the breakaway tab is adapted to break off from the cylindrical body upon application of a predetermined force, and wherein the predetermined force is one of a lateral force and a torque force greater than a force required to thread the foreign material exclusion plug into a threaded coupler.

5. The foreign material exclusion plug of claim 1 , wherein the slot is adapted to receive at least one of an end of a tool, a coin, and a portion of the breakaway tab broken off from the cylindrical body.

6. The foreign material exclusion plug of claim 1 , further comprising a flange radially extending from the cylindrical body at the top surface.

7. The foreign material exclusion plug of claim 6 , wherein the flange includes one of a cylindrical structure and a frusto-conical structure.

8. The foreign material exclusion plug of claim 6 , wherein the flange includes a thread boss facing at least partially in the cylindrical direction, and wherein an external thread of the externally-threaded cylindrical structure extends to the thread boss.

9. A coupling system, comprising:
a structural threaded coupler including an internally threaded portion comprising an internally-threaded cylindrical structure; and
a foreign material exclusion plug comprising
a cylindrical body comprising an externally-threaded cylindrical structure having a top surface and adapted to thread into the internally-threaded cylindrical structure,
a slot formed in the top surface of the cylindrical body and extending into the cylindrical body, and
a breakaway tab removably coupled to the top surface of the cylindrical body and extending outwards from the top surface of the cylindrical body, the breakaway tab being integrally formed with the cylindrical body as a unitary structure, and being adapted to receive a force to thread the foreign material plug into the structural threaded coupler, and being adapted to break off from the cylindrical body at a base thereof, the base adjoining the top surface of the cylindrical body,

wherein the slot is adapted to receive at least one of an end of a tool, a coin, and a portion of the breakaway tab broken off from the cylindrical body for unthreading the foreign material exclusion plug from the structural threaded coupler,
wherein the breakaway tab is oriented such that the breakaway tab crosses over the slot and is integrally connected to the cylindrical body on one of opposing sides and opposing ends of the slot.

10. The coupling system of claim 9 , wherein the breakaway tab is adapted to break off from the cylindrical body upon application of a predetermined force, and wherein the predetermined force is one of a lateral force and a torque force greater than a force required to thread the foreign material exclusion plug into the structural threaded coupler.

11. The coupling system of claim 9 , wherein the foreign material exclusion plug further comprises a flange radially extending from the cylindrical body at the top surface, and the structural threaded coupler further comprises a flush mount portion adapted to receive the flange.

12. The coupling system of claim 11 , wherein the flange includes one of a cylindrical structure and a frusto-conical structure, and the flush mount portion includes one of a counterbore with a flat bottomed enlargement of the internally threaded portion and a countersink with a conical enlargement of the internally threaded portion.

13. The coupling system of claim 11 , wherein the flange includes a thread boss facing at least partially in the cylindrical direction, an external thread of the externally-threaded cylindrical structure extends to the thread boss, and the thread boss is adapted to engage an internal thread of the internally threaded portion and lock the foreign material exclusion plug in place relative to the structural threaded coupler.

14. The coupling system of claim 13 , wherein the breakaway tab is adapted to break off from the cylindrical body upon application of a force while the thread boss is engaged with the internal thread.

Assignees

• Cons Nuclear Security Llc

Inventors

• Cole Robert N
• Shay Kevin P
• Renfro Austin L

Classifications

• F16B37/14 Primary

  Cap nuts; Nut caps or bolt caps · CPC title

• F16B31/025

  with a gauge pin in a longitudinal bore in the body of the bolt · CPC title

• F16B31/028

  with a load-indicating washer or washer assembly · CPC title

• B23P11/00

  Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  (connecting sheet metal or metal tubes, rods or profiles B21D39/00; riveting B21J; soldering, unsoldering, welding B23K; hand tools for connecting wire or strip B25B25/00; connecting metal parts by adhesives F16B11/00) · CPC title

• F16B37/125 Primary

  the external surface of the insert being threaded · CPC title