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US 7,065,854 B2Granted
Abutting clinch-joining method
OwnerSten R. Gerfastinventor
Life of this patent
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Abstract
An in-expensive method to join metals or other materials by a slug that is compressed or clinched into a punched or machined substantially rectangular slot in two adjoining pieces. The final assembly is flat and of the same thickness as the clinched material. It could be used to advantage in a mitered frame type assembly.
Claims7
Butt-joining clinch method comprising:
- In two abutting metal strips punching a substantially rectangular slot into both abutments, wherein said slots have two rounded edges produced by both a punch and a die, using one knock-out-slug from said punching, re-inserting said slug into the center of both said abutments, clinching said slug into said slots thereby securely butt-joining said strips.
Butt-joining method comprising:
- In two abutting metal strips punching a substantially keystone shaped slot into both abutments, wherein said slots have two rounded edges produced by both a punch and a die, inserting into said two slots a deformable slug, clinching said slug into said slots, thereby securely butt-joining said strips.
Dependencies are inferred from the claim text.