Pneumatic pressure relief test plug

Details Pneumatic pressure relief test plug Pneumatic pressure relief test plug

2009-03-26

2009-10-06

Brinson, Patrick F (Department: 3754)

Pipes and tubular conduits

With closures and plugs

Inflatable

C138S090000, C137S224000, C137S226000

Reexamination Certificate

active

07597118

ABSTRACT:
The present invention provides a pneumatic test plug that seals a portion of a pipe section having a generally cylindrical internal pipe wall. In general, the pneumatic test plug includes an inflation valve mounted in the bladder wall of an inflatable bladder. The inflation valve includes a main air passageway through which air is introduced into the bladder and a separate release channel. The separate release channel includes an inlet disposed toward an interior end of the inflation valve and an outlet in fluid communication with an exterior environment outside the bladder. When in a sealed position, a sealing portion of the bladder engages the interior end of the inflation valve and sealingly closes the inlet of the release channel. When the sealing portion is elastically deflected by overinflation of the bladder, the sealing portion uncovers the inlet of the release channel to allow air to escape from the interior area of the bladder through the release channel to the exterior environment.

REFERENCES:
patent: 3241571 (1966-03-01), Garcia
patent: 3291156 (1966-12-01), Corsano
patent: 3494504 (1970-02-01), Jackson
patent: 3613936 (1971-10-01), Kaiser et al.
patent: 3667640 (1972-06-01), Morrow
patent: 4303101 (1981-12-01), Tholen
patent: 4312708 (1982-01-01), Leslie
patent: 4493344 (1985-01-01), Mathison et al.
patent: 4542642 (1985-09-01), Tagliarino
patent: 4585033 (1986-04-01), Westman
patent: 4614206 (1986-09-01), Mathison et al.
patent: 4658861 (1987-04-01), Roberson, Sr.
patent: 4820474 (1989-04-01), Leslie et al.
patent: 5035266 (1991-07-01), Benson et al.
patent: 5076328 (1991-12-01), Lyon
patent: 5131433 (1992-07-01), Sion et al.
patent: 5181977 (1993-01-01), Gneiding et al.
patent: 5209266 (1993-05-01), Hiemsoth
patent: 5234034 (1993-08-01), Lyon
patent: 5348085 (1994-09-01), Benson
patent: 5353841 (1994-10-01), Mathison et al.
patent: 5413136 (1995-05-01), Prescott
patent: 5771937 (1998-06-01), Collins
patent: 5778923 (1998-07-01), Marston
patent: 6116286 (2000-09-01), Hooper et al.
patent: 6230327 (2001-05-01), Briand et al.
patent: 6427714 (2002-08-01), Freigang et al.
patent: 6502603 (2003-01-01), Lane, Jr.
patent: 6513549 (2003-02-01), Chen
patent: 6901966 (2005-06-01), Onuki et al.
patent: 7013926 (2006-03-01), Storey et al.
patent: 7021337 (2006-04-01), Markham
patent: 7325574 (2008-02-01), Beckey
patent: 7404412 (2008-07-01), Milanovich et al.
G.T. Water Products, Inc.; SAFE-T-SEAL Test Plugs product information (5 pgs.) http://www.gtwaterproducts.com/safe.html (cited visited Nov. 7, 2008).
G.T. Water Products, Inc.; New Innovations (2 pgs.) http://www.gtwaterproducts.com
ew.html (cited visited Nov. 7, 2008).
Cherne Industries Inc.; Pneumatic Plugs—Single-Size Test-Ball® (¾″ through 6″) product information (1 pg.) www.cherneind.com.
Cherne Industries Inc.; Pneumatic Plugs—Single-Size Test-Ball® (8″ through 12″) product information (1 pg.) www.cherneind.com.
Cherne Industries Inc.; Pneumatic Plugs—Clean-Seal® Plugs product information (1 pg.) www.cherneind.com.
Cherne Industries Inc.; Pneumatic Plugs—Long Test-Ball® & MS2® Test-Ball product information (1 pg.) www.cherneind.com.
IPS Corporation; Multi-Size Pneumatic Pipe Plugs product information (1 pg.).

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