Metal working – Method of mechanical manufacture – Gas and water specific plumbing component making
Patent
1990-09-19
1992-07-07
Echols, P. W.
Metal working
Method of mechanical manufacture
Gas and water specific plumbing component making
29890142, 29506, 29507, 295221, 29523, B21D 3100
Patent
active
051271567
ABSTRACT:
An inner cylindrical component is disposed on a bottom portion of an outer cylindrical component with a clearance which is formed between an outer diameter portion of the inner component and an inner diameter portion of the outer component. A guiding pin for positioning is inserted concentrically through the inner component and a tip end portion of the guiding pin engages with the bottom portion of the outer component. An outer peripheral portion of the positioned inner component is locally and vertically pressure-pressed. A portion of the inner component is extended in an outer diameter direction according to the pressure-pressing plastic deformation. The extended member of the inner component is joined together with the inner diameter portion of the outer component. The extended member of the inner component and the outer component are mutually combined together. After the pressing operation the guiding pin is withdrawn.
REFERENCES:
patent: 3006026 (1961-10-01), Martin et al.
patent: 3858812 (1975-01-01), Williams et al.
patent: 4349947 (1982-09-01), Rood
patent: 4389766 (1983-06-01), Capuano
Gunji Kenichi
Kanamaru Hisanobu
Koshizaka Atsushi
Yokoyama Mizuho
Bryant David P.
Echols P. W.
Hitachi , Ltd.
Hitachi Automotive Engineering Co. Ltd.
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