Metal fusion bonding – Process – Plural joints
Patent
1995-05-19
1996-04-02
Heinrich, Samuel M.
Metal fusion bonding
Process
Plural joints
228212, 209395, 29467, 29469, B07B 118
Patent
active
055033237
ABSTRACT:
A screening body for a pulp digester includes two, spaced apart ring supporting a plurality of axially extending screening bars each of which has a foot portion frictionally received in and welded to a correspondingly formed recess formed on the inner side of each of the ring segments; an apparatus for manufacturing a screening body is also provided and which includes a first assembly member which mounts a form for receiving the ring member segments in parallel relation and into which are inserted the screening bars with the foot portions fractionally received in complementary recesses formed on the inner side of each of the ring segments; a retaining member in the form of a second assembly device includes a cylindrical drum surface which is pressed against the screening bars of a partially assembled screening body section while a second and subsequent sections of the screening body are assembled.
REFERENCES:
patent: 4150475 (1979-04-01), Bondpers et al.
patent: 4155841 (1979-05-01), Chupka et al.
patent: 4371108 (1983-02-01), Roggendorff et al.
patent: 4397230 (1983-08-01), Hunt et al.
patent: 5200072 (1993-04-01), Frejborg et al.
Bergkvist Lennart
Carlsson Jan G.
Soderqvist Soren
Toreld Per
Heinrich Samuel M.
Kvaerner Pulping Technologies AB
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