Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1988-03-16
1994-06-21
Gorski, Joseph M.
Metal working
Method of mechanical manufacture
Assembling or joining
29450, 29786, 29788, 29790, 901 6, 901 7, B23P 1700, B21D 5356
Patent
active
053218795
ABSTRACT:
A method and apparatus for carrying out the method in which a clamp made from a flat blank is plastically deformed into circular shape, is locked in its closed condition, is transferred from the deformation station to a transfer station where it is placed over the object to be fastened and is thereafter tightened onto the object. In order to maintain the clamp in predetermined position on the object before being tightened, the clamp is additionally plastically deformed into a slightly non-circular shape differing from the circular shape of the object and is again elastically deformed into its original circular shape before being placed over the object so that return of the clamp to its slightly non-circular configuration will provide sufficient frictional engagement to hold the clamp in predetermined position.
REFERENCES:
patent: 2738747 (1956-03-01), Derrick
patent: 2837949 (1958-06-01), Lodholm
patent: 3475793 (1969-11-01), Oetiker
patent: 4003238 (1977-01-01), Oetiker
patent: 4398720 (1983-08-01), Jones et al.
patent: 4425781 (1984-01-01), Oetiker
patent: 4633698 (1987-01-01), Oetiker
patent: 4803768 (1989-02-01), Golla
Craig, Jr. Paul M.
Gorski Joseph M.
Hans Oetiker AG Maschinen - und Apparatefabrik
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