Plug gauge and associated method for sealing the same

Patent metadata

Field	Value
Publication number	US-11346644-B2
Application number	US-201916293866-A
Country	US
Kind code	B2
Filing date	Mar 6, 2019
Priority date	Mar 6, 2019
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

A plug gauge includes a housing defining an internal volume and a longitudinal axis AH. The housing includes an opening into the internal volume. The plug gauge also includes a contact element at least partially received in the opening. The plug gauge further includes a plunger at least partially received in the internal volume. The plunger is biased into engagement with the contact element to urge the contact element radially outward from the housing through the opening. The plug gauge additionally includes a sealing member between the contact element and the housing.

First claim

What is claimed is:

1. A plug gauge comprising:
a housing defining an internal volume and a longitudinal axis A H , said housing comprising an opening into said internal volume;
a contact element at least partially received in said opening;
a plunger at least partially received in said internal volume, said plunger being biased into engagement with said contact element to urge said contact element radially outward from said housing through said opening; and
a sealing member between said contact element and said housing.

2. The plug gauge of claim 1 wherein a gap is defined between said housing and said contact element, and wherein at least a portion of said sealing member is in said gap.

3. The plug gauge of claim 1 wherein a gap is defined between said housing and said contact element, and wherein said sealing member is packed into said gap.

4. The plug gauge of claim 1 wherein said sealing member circumferentially surrounds said contact element.

5. The plug gauge of claim 1 wherein said sealing member is an O-ring.

6. The plug gauge of claim 1 wherein said sealing member is fixedly connected to at least one of said housing and said contact element.

7. The plug gauge of claim 1 wherein a first portion of said sealing member is fixedly connected to said housing and a second portion of said sealing member is fixedly connected to said contact element.

8. The plug gauge of claim 1 wherein said sealing member is an annular diaphragm seal.

9. The plug gauge of claim 1 wherein said sealing member comprises an elastomeric material.

10. The plug gauge of claim 1 wherein said sealing member comprises polytetrafluoroethylene.

11. The plug gauge of claim 1 wherein said sealing member comprises a metallic material.

12. The plug gauge of claim 11 wherein said metallic material comprises brass.

13. The plug gauge of claim 1 wherein said sealing member comprises mesh.

14. The plug gauge of claim 1 further comprising:
a second contact element at least partially received in a second opening in said housing, wherein said plunger is biased into engagement with said second contact element to urge said second contact element radially outward from said housing through said second opening; and
a second sealing member between said second contact element and said housing.

15. The plug gauge of claim 14 wherein said second opening is diametrically opposed from said opening.

16. The plug gauge of claim 14 further comprising a second set of contact elements, each contact element, of said second set of contact elements, being received in a corresponding opening, of a second set of openings, in said housing.

17. A method for inhibiting ingress of debris into a plug gauge comprising a housing comprising an opening, a contact element at least partially received in said opening, and a plunger biased into engagement with said contact element to urge said contact element outward from said housing through said opening, said method comprising:
placing a sealing member between said contact element and said housing.

18. The method of claim 17 further comprising fixing a first portion of said sealing member to said housing.

19. The method of claim 18 further comprising fixing a second portion of said sealing member to said contact element.

20. The method of claim 18 wherein said fixing comprising at least one of welding, adhering, and brazing.

Assignees

• Boeing Co

Inventors

• Albrecht Mark
• Chan Kwok Tung
• Backhaus Gary

Classifications

• F16J15/3228

  formed by deforming a flat ring · CPC title

• G01B3/26 Primary

  Plug gauges · CPC title

• F16J15/3284

  characterised by their structure; Selection of materials · CPC title

• F16J15/3268

  Mounting of sealing rings · CPC title

• F16J15/104

  characterised by structure · CPC title