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US 4,432,559 AGranted
Hydraulic chuck having ring collet
OwnerRobert Rasmusseninventor
Life of this patent
Estimating the term…
Abstract
A hydraulic chuck for engagement of the outside of tubes. A set of ring collets are provided to grip the tube and hold it while the tube is tested, expanded, or otherwise worked on. Seals are provided to prevent fluid flow between the tube and the chuck. A piston is actuated to engage and release the ring collets, and to engage the seal when the collets are engaged.
Claims7
A hydraulic chuck device, comprising:
- a piston having a central axis and an annular extention along said axis with an inner diameter sized to receive a tube;
- seal cone means positioned adjacent said extension to cooperatively define a seal cavity adjacent said tube;
- seal means located in said cavity to prevent passage of fluid between said piston and said tube;
- ring collet means attached to said seal cone means and positioned to engage said tube upon compression of said ring collet means;
- body means slideably mounting said piston to permit movement of said piston with respect to said body means along said axis, said body means having tube seat means for restraining axial movement of said tube in one axial direction;
- nose cone means fixedly mounted on said body means and attached to said ring collet means such that movement of said body means with respect to said piston operates said ring collet means;
- power means for moving said piston with respect to said body means to activate said seal means and said ring collet means;
- and
- said tube seat means fixedly mounted on said body means and slideably mounted through said piston, said tube seat means being positioned to contact the end of said tube to prevent axial movement of said tube in one axial direction.
6 more elements
Dependencies are inferred from the claim text.