Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Patent
1988-03-14
1990-02-20
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Heat exchanger or boiler making
29890036, 29424, 29507, 29523, B21D 5308
Patent
active
049014153
ABSTRACT:
A composite pipe is proposed which is comprised of an aluminum pipe and a lead pipe formed in the aluminum pipe in direct contact with the inner wall of the aluminum pipe. The composite pipe is produced by supplying a lead pipe to a continuous aluminum extrusion machine which can extrude while enveloping along object, to form an aluminum pipe on the outer periphery of the lead pipe. A heat pipe using the composite pipe is also proposed.
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patent: 582258 (1897-05-01), Brighton et al.
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patent: 2516689 (1950-07-01), France et al.
patent: 3467180 (1969-09-01), Pensotti
patent: 4233101 (1980-11-01), Scragg et al.
patent: 4567632 (1986-02-01), Peters et al.
patent: 4688319 (1987-08-01), Gross et al.
Chin Frances
Eley Timothy V.
Sumitomo Electric Industries Ltd.
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