Maryland's Defense Patent Database

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Venting cap system

Patent image
NSWCIHD

A venting cap system includes a first open-ended sleeve and a second open-ended sleeve. The first open-ended sleeve is made from a first material that melts at a selected temperature. The first open-ended sleeve has an internal region commencing at a first end and an externally-threaded region commencing at a second end. The second open-ended sleeve is made from a second material that does not melt at the selected temperature. The second open-ended sleeve is coaxially fitted in the first open-ended sleeve. The second open-ended sleeve includes a first end that is flush with the first end of the first open-ended sleeve. The second open-ended sleeve partially overlaps part of the externally-threaded region. The coefficients of linear expansion of the first material and the second material are about equal.

Inventors: 
Cannon, Thomas C.
Patent Number: 
Technical domain: 
Machines and Processing
FIle Date: 
2012-01-27
Grant Date: 
2013-08-13
Grant time: 
564 days
Grant time percentile rank: 
10
Claim count percentile rank: 
7
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY