Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1974-03-28
1976-01-27
Lanham, C. W.
Metal working
Method of mechanical manufacture
Assembling or joining
2924354, B21D 3900
Patent
active
039343308
ABSTRACT:
A metallic rivet is secured to work containing a work bore, the rivet having a head at one side of the work and an axially extending shank extending through the bore, the shank having a terminal protruding at the opposite side of the work. The method includes:
A. applying back-up force to the rivet head tending to urge the head toward the work, and
B. delivering an impact to the rivet shank terminal in a direction tending to urge said terminal toward said bore, but with sufficient impact velocity as to radially expand and axially shorten the bulk of said terminal, thereby to form an upset engaging said opposite side of the work while the head remains in close adjacency to said one side of the work.
REFERENCES:
patent: 2515674 (1950-07-01), Tisie
patent: 2539419 (1951-01-01), Harcourt
patent: 2797596 (1957-07-01), Seely
patent: 3432925 (1969-03-01), Woolley
patent: 3557442 (1971-01-01), Speller
patent: 3574918 (1971-04-01), Focht
patent: 3581373 (1971-06-01), Murdoch et al.
patent: 3609851 (1971-10-01), McMaster et al.
patent: 3747194 (1973-07-01), Christensen
Duzan James R.
Haefliger William W.
Lanham C. W.
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