Sleeve with relief cavity for flanged tube assembly
AssigneeParker-Hannifin Corporation
InventorPhillip A. LANDIS
Life of this patent
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Abstract
A flanged tube assembly includes a rigid tube (10) and a sleeve (12) disposed about an axial end portion of the tube. The axial end portion (18) of the tube (10) includes a flange portion (24) that is formed by the tube wall (36) being radially outwardly deformed over an axial end surface of the sleeve. The sleeve (12) has a radially inner surface (28), and a portion of the tube wall (36) inside of the sleeve (12) is deformed to engage and conform to the radially inner surface of the sleeve, thereby forming a non-welded connection between the sleeve and the tube. The radially inner surface of the sleeve proximal the flange defines a relief cavity (56) that receives the deformed portion of tube wall when the tube wall is deformed during the formation of the flange (24).
Claims16
A flanged tube assembly, comprising:
- a tube having a longitudinal axis, an axial end portion, a radially inner surface, and a radially outer surface, wherein the radially inner surface and the radially outer surface together define a tube wall therebetween, and wherein the radially inner surface defines a fluid passage for conveying fluid through the tube;
- a sleeve disposed on the radially outer surface of the tube at the axial end portion of the tube;
- and
- the axial end portion of the tube including a flange portion that is formed by the tube wall being radially outwardly deformed over an axial end surface of the sleeve;
- wherein the sleeve has a radially inner surface, and a portion of the tube wall inside of the sleeve is deformed to engage and conform to the radially inner surface of the sleeve, thereby providing a non-welded connection between the sleeve and the tube;
- and
- wherein the radially inner surface of the sleeve proximal the flange portion defines a relief cavity that receives the deformed portion of tube wall when the tube wall is deformed during the formation of the flange portion.
A method of making a flanged tube assembly, comprising:
- providing a tube having a longitudinal axis, an axial end portion, a radially inner surface, and a radially outer surface, wherein the radially inner surface and the radially outer surface together define a tube wall therebetween, and wherein the radially inner surface defines a fluid passage for conveying fluid through the tube;
- providing a sleeve having a radially inner surface, wherein the radially inner surface of the sleeve proximal the flange portion includes a relief cavity;
- disposing the exemplary sleeve about the axial end portion of the tube;
- deforming the axial end portion of the tube with a forming tool in a direction radially outwardly and axially toward the sleeve to form a flange against an axial end surface of the sleeve;
- wherein the deforming includes directing material of the axial end portion of the tube into the relief cavity defined by the proximal portion of the radially inner surface of the sleeve.
Dependencies are inferred from the claim text.