Tube expander

Details Tube expander Tube expander

1977-03-16

1977-12-27

Larson, Lowell A.

Metal deforming

By relatively receding work-engaging tool-faces

Embodying three or more tools

308 3R, B21D 4102

Patent

active

040647307

ABSTRACT:
The expander is constructed from an irregular, truncated polyhedral pyramid in which surfaces bounded by parallel edges alternate with surfaces of trapezoidal contour. The latter have T-shaped longitudinal grooves each receiving respectively the T-shaped foot portion of double T-contoured guide elements and being secured to the groove from axial ends of the pyramid.

REFERENCES:
patent: 1671697 (1928-05-01), Burke
patent: 1719720 (1929-07-01), Olsen
patent: 2943667 (1960-07-01), Ewing et al.

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