Process for manufacturing nozzle tip

Claim 2

A process for manufacturing a nozzle tip from a tubular workpiece defining an axial bore and having a distal end and an open proximal end and an exterior surface comprising: (a) exteriorly forming a circumferentially extending indentation in said workpiece between said distal end and said proximal end to form a corresponding indented wall of substantially uniform thickness defining an interior surface having a reduced inside diameter; and (b) removing material from said indented wall to form an integral collar defining a generally cylindrical guide surface having a substantially uniform diameter which is less than the diameter of non-indented portions of the axial bore.

Claim 3

The manufacturing process of claim 1 wherein the workpiece has an axial length and step (a) further results in an increase in the axial length of the workpiece and further comprising: (c) removing material from the proximal end of said workpiece.

Claim 4

The manufacturing process of claim 1 further comprising the step of: (d) removing material from the exterior surface of said workpiece to thereby form a continuously cylindrical exterior surface which extends axially beyond opposing ends of said collar.

Claim 5

The manufacturing process of claim 1 wherein step (a) further comprises rolling said workpiece by applying a rotating engagement force to the exterior surface of the workpiece.

Claim 6

The manufacturing process of claim 1 wherein said workpiece has an interior distal end portion and further comprising the step of: (e) grinding the interior distal end portion of said workpiece so as to form a conical seat after step (a) is completed.

Claim 7

The manufacturing process of claim 1 further comprising the step of: (f) forming at least one orifice in the distal end workpiece after step (a) is completed.

Claim 8

A process for manufacturing a nozzle tip from a tubular workpiece defining an axial bore and having a distal end and an open proximal end and an exterior surface comprising: (a) locating said workpiece on a mandrel of a rolling machine by positioning said workpiece with reference to a pre-established workpiece reference position; (b) rolling said workpiece so as to form a crcumferentially extending indentation in said workpiece between said distal end and said proximal end thereby forming a corresponding indented wall of substantially uniform thickness defining an interior surface having a reduced inside diameter; and (c) grinding the interior surface to form a generally smooth cylindrical guide surface having a substantially uniform diameter which is less than the diameter of non-indented portions of the bore.

Claim 9

A process for manufacturing a nozzle tip from a tubular workpiece defining an axial bore and having a distal end and an open proximal end and an exterior surface comprising: (a) locating said workpiece on a mandrel of a rolling machine by positioning said workpiece with reference to a pre-established workpiece reference position; (b) rolling said workpiece so as to form a crcumferentially extending indentation in said workpiece between said distal end and said proximal end thereby forming a corresponding indented wall of substantially uniform thickness defining an interior surface having a reduced inside diameter; and (c) grinding the interior surface to form a generally smooth cylindrical guide surface having a substantially uniform diameter which is less than the diameter of non-indented portions of the bore.

Claim 10

The manufacturing process of claim 7 further comprising the step of: (d) grinding the proximal end portion of said workpiece to obtain a dimensioned workpiece having a pre-established axial dimension.

Claim 11

The manufacturing process of claim 8 further comprising the step of: (e) grinding the exterior surface of said workpiece to form a generally continuous cylindrical surface which extends axially beyond opposing ends of said interiorly formed guide surface.

Claim 12

The manufacturing process of claim 7 wherein said nozzle has a tapered distal end portion defining a transition with the tubular workpiece and said workpiece reference position is located at said transition.