Malleable press fittings

Patent metadata

Field	Value
Publication number	US-11060652-B2
Application number	US-201715852462-A
Country	US
Kind code	B2
Filing date	Dec 22, 2017
Priority date	Dec 22, 2017
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

A cast body for a pipe fitting includes a first body end and a second body end disposed opposite from the first body end. The body defines an axis extending from the first body end to the second body end, an inner body surface defining a fitting bore that extends through the body, and an outer body surface spaced from the inner body surface at a predetermined wall thickness. At a first location on the axis, the inner body surface is a first distance and the outer body surface is a third distance from the axis, and at a second location on the axis that is proximate to the first body end, the inner body surface is a second distance from the axis that is greater than the first distance and the outer body surface is a fourth distance from the axis that is less than the third distance.

First claim

That which is claimed is:

1. An unmachined cast body for a pipe fitting, the cast body comprising:
a first body end and a second body end disposed opposite from the first body end, the cast body defining an axis extending from the first body end to the second body end, the cast body defining a midpoint between the first body end and the second body end, a centerline of the cast body defined at the midpoint perpendicular to the axis, a first distance from the centerline to the first body end being equal to a second distance from the centerline to the second body end,
an inner body surface defining a fitting bore extending through the cast body from the first body end to the second body end, and
an outer body surface spaced from the inner body surface, the outer body surface defining a first groove between the centerline and the first body end, the outer body surface defining a second groove between the centerline and the second body end, the outer body surface defining a first frustoconical shape and a second frustoconical shape, the first frustoconical shape intersecting the second frustoconical shape at the centerline, the outer body surface defining a first shoulder extending radially inward from the first frustoconical shape to the first groove, the outer body surface defining a second shoulder extending radially inward from the second frustoconical shape to the second groove, the first frustoconical shape extending from the centerline to the first shoulder, the first frustoconical shape tapering inwards towards the axis as the first frustoconical shape extends from the centerline towards the first shoulder, the second frustoconical shape extending from the centerline to the second shoulder, the second frustoconical shape tapering inwards towards the axis as the second frustoconical shape extends from the centerline towards the second shoulder, the cast body comprising a first neck extending from the first groove to the first body end and a second neck extending from the second groove to the second body end, the outer body surface defining a third frustoconical shape of the first neck extending between the first groove and the first body end, the third frustoconical shape tapering inwards towards the axis as the third frustoconical shape extends from the first groove towards the first body end, the outer body surface defining a fourth frustoconical shape of the second neck extending between the second groove and the second body end, the fourth frustoconical shape tapering inwards towards the axis as the fourth frustoconical shape extends from the second groove towards the second body end, and
wherein the inner body surface tapers inward toward the axis from the first body end to the centerline and from the second body end to the centerline,
wherein a fifth frustoconical shape is defined by the first body end extending between the outer body surface and the inner body surface, the fifth frustoconical shape extending radially inward and axially outward from the outer body surface to the inner body surface relative to axis,
wherein a sixth frustoconical shape is defined by the second body end extending between the outer body surface and the inner body surface, the sixth frustoconical shape extending radially inward and axially outward from the outer body surface to the inner body surface relative to axis,
wherein the first frustoconical shape defines a first slope, the third frustoconical shape defines a second slope, and the fifth frustoconical shape defines a third slope,
wherein a value of the first slope is different from a value of the second slope, and
wherein a value of the third slope is different from the value of the first slope and the value of the second slope.

2. The cast body of claim 1 , wherein at a first location on the axis, the inner body surface is a first distance from the axis, wherein at a second location on the axis that is spaced from the first location and proximate to the first body end, the inner body surface is a second distance from the axis that is greater than the first distance, wherein at the first location, the outer body surface is a third distance from the axis, and wherein at the second location, the outer body surface is a fourth distance from the axis that is less than the third distance, wherein the inner body surface tapers from the second distance to the first distance, wherein the outer body surface tapers from the fourth distance to the third distance, and wherein the taper of the inner body surface and the outer body surface is configured so that solidification of the cast body during a casting process is controlled.

3. The cast body of claim 1 , wherein at a first location on the axis, the inner body surface is a first distance from the axis, wherein at a second location on the axis that is spaced from the first location and proximate to the first body end, the inner body surface is a second distance from the axis that is greater than the first distance, wherein at the first location, the outer body surface is a third distance from the axis, and wherein at the second location, the outer body surface is a fourth distance from the axis that is less than the third distance, and wherein the first location on the axis is at the centerline.

4. The cast body of claim 1 , wherein a wall thickness is defined between the inner body surface and the outer body surface, wherein the wall thickness is greatest at the centerline, and wherein the wall thickness is smallest proximate to the first body end and the second body end.

5. The cast body of claim 1 , wherein the inner body surface is defined radially inward from the outer body surface with respect to the axis.

6. The cast body of claim 1 , wherein:
a wall thickness is defined between the outer body surface and the inner body surface; and
the wall thickness of the first neck is greater than the wall thickness at the first groove.

Assignees

• Anvil Int Llc
• Asc Eng Solutions Llc

Inventors

• Belen Jordan Cameron
• Mcnamara Matthew William
• Kirby Mark David
• Schell Ty

Classifications

• B21D39/048

  using presses for radially crimping tubular elements · CPC title

• B21D39/046

  Connecting tubes to tube-like fittings · CPC title

• F16L39/005

  for concentric pipes · CPC title

• F16L13/142 Primary

  with a sealing element inserted into the female part before crimping or rolling · CPC title

• F16L39/06

  of the multiline swivel type, e.g. comprising a plurality of axially mounted modules · CPC title