Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
George D. Waite0
Date of Patent
November 11, 2008
0Patent Application Number
114307330
Date Filed
May 9, 2006
0Patent Primary Examiner
Patent abstract
The hydraulic pressure relief tool opens a check valve in the male portion of a hydraulic line coupler. The male portion has a locking ball receiving groove. The tool includes a male coupler holder and a coupler retainer that are pivotally connected together. The male coupler has a U-shaped groove. The sides of the groove slide in the ball receiving groove. The male coupler engaging surface on the retainer is moved across the U-shaped groove to lock the coupler to the tool. A fluid deflector housing covers a portion of the U-shaped groove. A check valve opener is mounted in a threaded passage in the housing. A valve engaging surface on the opener is advanced to open the check valve.
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