US 10,648,598 B2Granted

Ferrule for a conduit fitting

AssigneeSwagelok Company

InventorsPeter C. Williams, Donald E. Negrelli, Mark D. Bearer

Life of this patent

Estimating the term…

Loading patent…

Abstract

A ferrule for a conduit fitting includes an interior wall extending along a central axis through the ferrule between first and second end portions of the ferrule, so that the ferrule can be installed over a conduit end. The first end portion of the ferrule includes an axially outer first end driven surface disposed at a first angle between 70° and 90° with respect to the central axis, and an axially inner first end camming surface disposed at a second angle between 0° and 40° with respect to the central axis. The second end portion of the ferrule includes an axially outer second end driven surface disposed at a third angle substantially equal to the first angle, and an axially inner second end camming surface disposed at a fourth angle substantially equal to the second angle.

Claims20

Dependent claims

A ferrule for a conduit fitting, the ferrule comprising:

an interior wall extending along a central axis through the ferrule between first and second end portions of the ferrule, so that the ferrule can be installed over a conduit end;
the first end portion of the ferrule including an axially outer first end driven surface disposed at a first angle between 70° and 90° with respect to the central axis, and an axially inner first end camming surface disposed at a second angle between 0° and 40° with respect to the central axis;
the second end portion of the ferrule including an axially outer second end driven surface disposed at a third angle substantially equal to the first angle, and an axially inner second end camming surface disposed at a fourth angle substantially equal to the second angle;
wherein the ferrule further comprises a central boss portion extending radially outward to define a radially outermost surface at an axial center point of the ferrule, first and second hinge portions defining first and second outer circumferential recesses disposed between the first and second end portions and the central boss portion, and an interior circumferential notch disposed between the first and second hinge portions at the axial center point of the ferrule.

1 more element

A fitting assembly comprising:

a first fitting component including an interior bore for receiving a conduit end and a camming mouth defining a fitting component camming surface;
a second fitting component joinable with the first fitting component and including an interior bore for receiving the conduit end therethrough and an annular interior shoulder that forms a drive surface;
and
a ferrule comprising an interior wall extending along a central axis through the ferrule between first and second end portions of the ferrule, so that the ferrule can be installed over the conduit end, the ferrule further including a first hinge portion axially inward of the first end portion and a second hinge portion axially inward of the second end portion;
wherein when the fitting assembly is assembled with the first end portion of the ferrule engaging the first fitting component and the second end portion of the ferrule engaging the second fitting component, and the fitting assembly is completely installed on a conduit end, the first hinge portion of the ferrule hinges radially inward to collet the conduit end and the second hinge portion of the ferrule hinges radially inward to prevent compression of the second end portion of the ferrule against the conduit end;
and
wherein when the fitting assembly is assembled with the second end portion of the ferrule engaging the first fitting component and the first end portion of the ferrule engaging the second fitting component, and the fitting assembly is completely installed on a conduit end, the second hinge portion of the ferrule hinges radially inward to collet the conduit end and the first hinge portion of the ferrule hinges radially inward to prevent compression of the first end portion against the conduit end.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/428,194Filed 9 Feb 2017 · us provisional application
Published: US 2017/0254451 A17 Sep 2017
Granted: 12 May 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

F16L 19/065
In which radial clamping is obtained by wedging action on non-deformed pipe ends: the wedging action being effected by means of a ring
F16L 19/10
With metal rings which bite into the wall of the pipe: the profile of the ring being altered
F16L
Pipes