Method for producing expanded metal profiles

Details Method for producing expanded metal profiles Method for producing expanded metal profiles

2011-05-03

2011-05-03

Chang, Rick K (Department: 3726)

Metal working

Expanded metal making

C029S006200, C029S896600, C072S181000, C072S186000, C072S187000, C072S302000, C072S334000, C072S339000

Reexamination Certificate

active

07934300

ABSTRACT:
A method for producing expanded metal profiles, consisting of subjecting a metal strip of width less than the development of the profile to be produced to the following operations: —forming longitudinal slits in at least that longitudinal band which is to form the central web of the profile, —bending the edges of the slits, —profiling said strip, —transversely stretching that band containing the slits, —pressing areas of said central web in correspondence with said stretched band to displace them external to the plane of said web, characterised by subjecting the bent edges to drawing to obtain radiused edging having the tangent to the free edge forming an angle not less than 90° to the surface of the strip.

REFERENCES:
patent: 1796978 (1931-03-01), Bates
patent: 3298081 (1967-01-01), Terrell et al.
patent: 3763616 (1973-10-01), Pastorelli
patent: 1 308 560 (1973-02-01), None
patent: WO 01/42583 (2001-06-01), None

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