Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1984-08-27
1986-05-13
Goldberg, Howard N.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
291573R, 228183, 228255, B21D 5306
Patent
active
045877017
ABSTRACT:
A serpentine-type aluminum heat exchanger comprising a serpentine-anfractuous flat tube of an aluminum alloy, a plurality of corrugated fin units made of an aluminum alloy having a high aluminum content of 99 wt. % or more, and brazing metal coating layers fixed onto entire flat surfaces of parallel portions of the serpentine-anfractuous flat tube and for joining the flat tube and the fin units, is produced by preparing the serpentine-anfractuous flat tube of an aluminum alloy, the corrugated fin units and U-shaped members of an aluminum alloy brazing filler metal, closely fitting the U-shaped members onto the parallel portions of the flat tube, disposing the fin units in spaces between adjacent U-shaped members fitted onto the parallel portions of the flat tube, and heating the flat tube, the fin units and U-shaped members in the assembled relation to the brazing temperature.
REFERENCES:
patent: 2838830 (1958-06-01), Huggins
patent: 3521707 (1970-07-01), Brown
patent: 4214925 (1980-07-01), Arita et al.
patent: 4327800 (1982-05-01), Miller
Aoki Hisao
Koisuka Mikio
Arbes Carl J.
Goldberg Howard N.
Sanden Corporation
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