Metal deforming – Tool and/or tool holder – Having unitary tool-face
Patent
1983-01-24
1984-10-16
Larson, Lowell A.
Metal deforming
Tool and/or tool holder
Having unitary tool-face
72480, 72705, 294 97, B21D 106
Patent
active
044767056
ABSTRACT:
A tool for straightening indentations in sheet metal has a pair of substantially L-shaped rods, one leg of one of the rods being mounted concentrically within a corresponding leg of the other of the rods for movement axially along and rotatable about the common axis. The second leg of the outer rod has a recess shaped for receiving the corresponding second leg of the inner rod so that in a first position the second leg of the inner rod may be nestled within the second leg of the outer rod to provide a cross-sectional profile less than the composite of the two rods and both may be inserted and removed as a unit into and from a hole formed in the sheet metal. The inner rod may thereafter be rotated 180 degrees about the common axis and locked in position for applying a pulling force against the sheet metal. A spring detent locking pin secures the rods in the pulling disposition and also in the insertion/removal disposition of the rods. The detent is a prong-like spring member disposed within an axial bore of the pin and has a pair of spaced protrusions extending beyond the diameter of the pin through a bore extending diametrically through the pin.
REFERENCES:
patent: 3582126 (1971-06-01), Bladholm
patent: 3645160 (1972-02-01), Artioli et al.
patent: 4289017 (1981-09-01), Guidry
Larson Lowell A.
Ruderman Alan
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