Score and tool for forming the score

Details Score and tool for forming the score Score and tool for forming the score

1975-04-11

1977-03-22

Larson, Lowell A.

Metal deforming

With cutting

By composite tool

113 15A, B21D 5138

Patent

active

040129357

ABSTRACT:
A score having improved anti-fracture characteristics formed by a scoring punch including inclined sides merging at a flat bottom face. At least one of the sides is formed with a horizontal ledge parallel to the flat scoring face and located in vertical spaced relation from the face.

REFERENCES:
patent: 3765352 (1973-10-01), Schubert et al.
patent: 3900128 (1975-08-01), Brown

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