Method to reduce the width of a slot in a pipe or tube

Details Method to reduce the width of a slot in a pipe or tube Method to reduce the width of a slot in a pipe or tube

2006-07-04

2006-07-04

Bryant, David P. (Department: 3726)

Metal working

Method of mechanical manufacture

Multiperforated metal article making

C029S896600, C029S896620, C029S03300H, C029S03300H, C166S233000, C166S074000, C166S056000

Reexamination Certificate

active

07069657

ABSTRACT:
A method for reducing the width of slots spaced about the surface of a pipe or tube. The method comprises subjecting the surface of the pipe or tube to bombardment by a quantity of shot of a pre-determined size and for a pre-determined length of time to cause deformation of the surface of the pipe or tube adjacent to the slots therein so that the width of the slots is reduced to within a pre-determined size range.

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