1975-07-03
1976-07-20
Frazier, Roy D.
F16B 2500
Patent
active
RE0289078
ABSTRACT:
The disclosure relates to a threaded bushing which, upon entering and turning in the initially smooth bore of the work piece, will form through its own male thread the corresponding internal thread within the wall of the work piece bore. The bushing is formed with one or more exterior bevels or grooves which extend axially over at least several threads and intersect such threads to form spoon or cup-shaped frontal areas where each bevel or groove merges into a respective thread.
REFERENCES:
patent: 2347360 (1944-04-01), Muenchinger
patent: 3209383 (1965-10-01), Carlson
patent: 3451080 (1969-06-01), McIntyre et al.
Eibes by Carl-Herwig
Eibes by Christian
Eibes nee Waschau by Ursula
Eibes, deceased Carl B. H.
Wagner nee Eibes, all legar heirs by Maria-Theresia
Frazier Roy D.
Holko Thomas J.
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