Tubing disconnect tool

Metal working – Means to assemble or disassemble – Coupling to conduit

Patent

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Details

29268, B23P 1904

Patent

active

045301425

ABSTRACT:
A hand tool for disconnecting a tubular member from an associated connector fitting by imparting relative separation forces thereon in a direction generally axially of the tubing. The tool includes a frame adapted to engage the fitting to exert a separating force thereon, a bell crank pivotally connected to the frame and having a plunger movably mounted thereon and operable for engaging and releasing the tubing in the vicinity of said fitting. The tool also has a lever pivotally connected to the frame and movable relative to the bell crank for sequentially imparting tube gripping engagement of the tubing by the plunger and bell crank and then pivoting motion to the bell crank to thereby draw the tubing away from the fitting and thus disconnect the same. The plunger has a squeeze block mounted on one end thereof and movable relative to a juxtaposed tube-engaging portion of said bell crank. The plunger also has a follower mounted thereon remote from said squeeze block and operably engageable with the lever such that movement of said lever relative to said bell crank through a first stage of motion advances said squeeze block into engagement with the tubing and squeezes the tubing between the squeeze block and bell crank and imparts in a sequential second stage of motion the pivotal tube stripping motion to said bell crank. A coil compression spring encircles the plunger rod and is disposed between the bell crank and follower. A second coil compression spring is disposed between the bell crank and yieldably biases the bell crank towards an initial position abutting the frame.

REFERENCES:
patent: 2722857 (1955-11-01), Lacey
patent: 3757406 (1973-09-01), Bezar
patent: 3964148 (1976-06-01), Sturtevant
patent: 4050464 (1977-09-01), Hall

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