Method for making a three-dimensional metal structure

Details Method for making a three-dimensional metal structure Method for making a three-dimensional metal structure

2006-08-29

2006-08-29

Banks, Derris H. (Department: 3725)

Metal deforming

By use of 'flying tool' engaging moving work

With cutting

C029S006200

Reexamination Certificate

active

07096703

ABSTRACT:
The invention provides a method of making a three-dimensional metal structure, the method being characterized by the following steps:making longitudinal cuts in a sheet metal strip by causing the strip to pass between two rollers carrying annular knives whose blades are discontinuous and angularly offset from one roller to the other so as to form parallel rectilinear chords that are interconnected at regular intervals by connecting bridges and by linking legs, two adjacent chords being provided either with U-shaped bridges for connection with two legs of the same orientation, or with S-shaped bridges for connection with two legs of opposite orientations, and the U-shaped bridges are oriented in opposite directions from one chord to the next;slicing the strip transversely by sectioning said chords and said bridges at different longitudinal positions;moving every other precut chord into an offset plane by exerting vertical thrust on the chords carrying the U-shaped bridges so as to cause the legs to pivot and to bring the ends of said chords into vertical alignment with the S-shaped bridges; andstretching the strip in a transverse direction.

REFERENCES:
patent: 1090843 (1914-03-01), Golding
patent: 2434232 (1948-01-01), Singleton
patent: 3111204 (1963-11-01), Phare
patent: 3869778 (1975-03-01), Yancey
patent: 4170122 (1979-10-01), Cowell
patent: 6032503 (2000-03-01), Grippe
patent: 240561 (1925-10-01), None

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