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公开(公告)号：US20060143765A1
公开(公告)日：2006-07-06
申请号：US11350963
申请日：2006-02-09
Applicant: P. Halstead , Garry McNabb , David Wright
Inventor： P. Halstead , Garry McNabb , David Wright
CPC classification number: B21F15/08 , A42B3/20 , Y10S72/702 , Y10T29/49826 , Y10T29/49888
Abstract: A method of making a face mask including the steps of providing a plurality of lengths of Grade 2, commercially pure titanium wire, having a diameter of from about 0.21 to about 0.24 inches; forming each length at room temperature to a desired bend angle by bending the member at room temperature using rotary bending apparatus to a first bend angle that is from about 1.25 to about 1.35 times greater than the desired bend angle; and welding each of the thus formed lengths to at least one other of the lengths in an ambient, oxygen containing environment.
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