Granted Patent B2

US 10,406,591 · App. 14/815,118 · Granted Sep 10, 2019

Inventors: Robert Schellin (Stoughton, WI); Dennis Richard Mevissen (Waconia, MN); Attila Stephens (Madison, WI)

Assignee: Nelson Global Products, Inc.

B21J5/02B21D26/033B21D39/04B21D39/046B21D39/203B21D39/206B21J5/04B23P11/022F01N1/00F16L27/026F16L27/04B21D26/02Y10T29/49805

Abstract

Claims (31)

1. A method for forming a spherical decoupler conduit joint, the method comprising the steps of:

at least partially restraining a first conduit blank in a first forming die, and the first forming die defines a tubular recess portion and a spherical recess portion;

at least partially restraining a second conduit blank in a second forming die, and the second forming die defines a tubular recess portion and a spherical recess portion;

inserting a flexible material in the first conduit blank;

compressing the flexible material to force the flexible material against the first conduit blank to; force a portion of the first conduit blank outward into engagement with the tubular recess portion of the first die, and another portion of the first conduit blank outward into contact with the spherical recess portion of the first forming die to form an outer slider portion having a tubular portion and a spherical portion;

inserting a flexible material in the second conduit blank;

compressing the flexible material to force the flexible material against the second conduit blank to; force a portion of the second conduit blank outward into engagement with the tubular recess portion of the second die, and another portion of the second conduit blank outward into contact with the spherical recess portion of the second forming die to form an inner slider having a tubular portion and a spherical portion;

inserting the tubular portion of the inner slider into the tubular portion of the outer slider to form a subassembly;

inserting a third conduit blank into the outer slider;

inserting a fourth conduit blank into the inner slider;

placing the subassembly, the third conduit blank, and the fourth conduit blank into a third die, and the third die defines a recess substantially matching the shape of the subassembly;

inserting a flexible material into the third conduit blank and the fourth conduit blank;

compressing the flexible material against the third conduit blank to; expand at least a portion of the third conduit blank outward into engagement with at least a portion of the outer slider to form a connection inlet, and against the fourth conduit blank to expand at least a portion of the fourth conduit blank outward into engagement with at least a portion of the inner slider to form a connection outlet; and

removing the spherical decoupling conduit joint from the third die.

2. The method of claim 1 , wherein the first die and the second die are joined as a single die.

3. The method of claim 1 , and further comprising the step of:

forming an inlet connector shape on the inlet connection.

4. The method of claim 1 , and further comprising the step of:

forming an outlet connector shape on the outlet connection.

5. The method of claim 1 , and wherein the step of:

at least partially restraining a first conduit blank in a first forming die comprises the steps of:

restraining a portion of the first conduit blank to prevent axial movement of the conduit blank within the first die; and

permitting slidable movement of a slidably unrestrained portion of the first conduit blank to permit axial movement of the slidably unrestrained portion of the first conduit blank during the step of compressing the flexible material.

6. The method of claim 1 , and wherein the step of:

at least partially restraining a second conduit blank in a second forming die comprises the steps of:

restraining a portion of the second conduit blank to prevent axial movement of the conduit blank within the second die;

permitting slidable movement of a slidably unrestrained portion of the second conduit blank to permit axial movement of the slidably unrestrained portion of the second conduit blank during the step of compressing the flexible material.

7. The method of claim 1 , and further comprising the step of:

defining the spherical portion of the outer slider to limit pivoting movement of the inlet connection.

8. The method of claim 1 , and further comprising the step of:

defining the spherical portion of the inner slider to limit pivoting movement of the outlet connection.

Assignments (9)

Continuity (1)