Masking plug assmebly

Patent metadata

Field	Value
Publication number	US-10639664-B2
Application number	US-201715726846-A
Country	US
Kind code	B2
Filing date	Oct 6, 2017
Priority date	Oct 6, 2017
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

A masking plug assembly includes a lower anvil and an elongate member coupled to a central portion of the lower anvil, where the elongate member includes at least one coupling part. The assembly also includes an upper anvil having a central opening for receiving the elongate member therethrough, where the upper anvil includes at least one complementary coupling part configured to be releasably coupled with the at least one coupling part of the elongate member. The assembly also includes a deformable plug with a central opening for receiving the elongate member therethrough, where the deformable plug is configured to be positioned within the hole of the structure between the lower anvil and the upper anvil, and where the deformable plug is composed of a resilient material such that at least a portion of the deformable plug expands horizontally when compressed vertically between the lower anvil and the upper anvil.

First claim

What is claimed is:

1. A masking plug assembly for protecting a hole in a structure, comprising:
a lower anvil;
an elongate member coupled to a central portion of the lower anvil, wherein the elongate member comprises at least one coupling part;
an upper anvil having a central opening for receiving the elongate member therethrough, wherein the upper anvil comprises at least one complementary coupling part configured to be releasably coupled with the at least one coupling part of the elongate member; and
a deformable plug comprising a central opening for receiving the elongate member therethrough, wherein the deformable plug is configured to be positioned within the hole of the structure between the lower anvil and the upper anvil, and wherein the deformable plug is composed of a resilient material such that at least a portion of the deformable plug expands horizontally when compressed vertically between the lower anvil and the upper anvil, wherein the portion of the deformable plug is an end portion contacting the lower anvil,
wherein the at least one coupling part of the elongate member and the at least one complementary coupling part of the upper anvil are configured such that a distance between the lower anvil and the upper anvil progressively decreases as the at least one coupling part of the elongate member and the at least one complementary coupling part of the upper anvil are progressively coupled together.

2. The masking plug assembly of claim 1 , wherein the deformable plug comprises a frusto-conical portion having an upper diameter and a smaller, lower diameter connected by an angled portion, and a cylindrical portion extending from the lower diameter of the frusto-conical portion.

3. The masking plug assembly of claim 1 , wherein the upper anvil comprises an upper diameter and a smaller, lower diameter, wherein a top side of the deformable plug comprises a chamfer surrounding the central opening of the deformable plug, and wherein an outer diameter of the chamfer is larger than the lower diameter of the upper anvil.

4. The masking plug assembly of claim 1 , wherein the lower anvil and the deformable plug comprise one integral component.

5. The masking plug assembly of claim 1 , wherein the at least one coupling part of the elongate member comprises a series of ribs disposed along the elongate member, and wherein the at least one complementary coupling part of the upper anvil comprises a plurality of ratchet protrusions sized to engage the series of ribs.

6. The masking plug assembly of claim 1 , wherein the at least one coupling part of the elongate member comprises threads disposed around a circumference of the elongate member, and wherein the at least one complementary coupling part of the upper anvil comprises complementary threads disposed around the central opening of the upper anvil and sized to engage the threads of the elongate member via rotation of the upper anvil.

7. The masking plug assembly of claim 1 , wherein the end portion of the deformable plug which expands horizontally extends out of the hole of the structure along an interior surface of the hole.

8. A method for installing a masking plug assembly to protect a hole in a structure, comprising:
positioning a deformable plug within the hole of the structure, wherein the deformable plug comprises a central opening for receiving an elongate member therethrough, and wherein the deformable plug is composed of a resilient material such that at least a portion of the deformable plug expands horizontally when compressed vertically;
inserting the elongate member through the central opening of the deformable plug, wherein the elongate member comprises at least one coupling part;
releasably coupling an upper anvil to the elongate member on a first side of the hole wherein the elongate member is coupled to a central portion of a lower anvil on a second side of the hole, and wherein the upper anvil comprises at least one complementary coupling part configured to be releasably coupled with the at least one coupling part of the elongate member, wherein releasably coupling the upper anvil to the elongate member comprises progressively coupling the at least one coupling part of the elongate member with the at least one complementary coupling part of the upper anvil so as to progressively decrease a distance between the lower anvil and the upper anvil; and
compressing the deformable plug between the lower anvil and the upper anvil such that the deformable plug deforms to seal an interior surface of the hole,
wherein the portion of the deformable plug is an end portion contacting the lower anvil, and wherein compressing the deformable plug between the lower anvil and the upper anvil comprises compressing the deformable plug such that the end portion of the deformable plug expands horizontally and extends out of the hole of the structure along an interior surface of the hole.

9. The method of claim 8 , wherein the lower anvil and the deformable plug comprise one integral component.

10. The method of claim 8 , wherein the interior surface of the hole comprises a countersunk surface, wherein the deformable plug comprises a frusto-conical portion having an upper diameter and a smaller, lower diameter connected by an angled portion, and a cylindrical portion extending from the lower diameter of the frusto-conical portion, and wherein positioning the deformable plug within the hole comprises positioning the deformable plug such that the angled portion of the deformable plug contacts the countersunk surface of the hole.

11. The method of claim 8 , wherein the hole comprises an upper edge and a lower edge, and wherein compressing the deformable plug comprises compressing the deformable plug between the lower anvil and the upper anvil such that the deformable plug deforms to seal the upper edge and the lower edge of the hole.

12. The method of claim 8 , further comprising:
before the deformable plug is positioned within the hole of the structure, inserting the elongate member through the central opening of the deformable plug.

13. The method of claim 8 , wherein progressively coupling the at least one coupling part of the elongate member with the at least one complementary coupling part of the upper anvil comprises progressively coupling a series of ribs disposed along the elongate member with a plurality of ratchet protrusions disposed on the upper anvil, wherein the plurality of ratchet protrusions are sized to engage the series of ribs.

14. The method of claim 8 , wherein progressively coupling the at least one coupling part of the elongate member with the at least one complementary coupling part of the upper anvil comprises rotating the upper anvil such that threads disposed around a circumference of the elongate member are progressively engaged with complementary threads disposed around the central opening of the upper anvil.

15. A masking plug assembly for protecting a hole in a structure, comprising:
a threaded screw comprising a head;
a threaded washer, wherein the threaded washer is sized to engage the threaded screw; and
a deformable plug comprising a central opening for receiving the threaded screw therethrough, wherein the deformable plug is configured to be positioned within the hole of the structure between the head and the threaded washer such that the head and the threaded washer directly contact the deformable plug, and wherein the deformable plug is composed of a resilient material such that at least a portion of the deformable plug expands horizontally when compressed vertically between the head and the threaded washer,
wherein the head of the thr

Assignees

• Boeing Co

Inventors

• Warner Theodore
• Scherer James L

Classifications

• B05B12/26 Primary

  for masking cavities · CPC title

• B29C65/565

  involving interference fits, e.g. force-fits or press-fits (B29C65/66 takes precedence) · CPC title

• B05B12/29

  with adjustable size · CPC title