Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1978-01-09
1979-01-30
Lanham, C. W.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29459, 165133, 138144, 138145, 138146, 427178, 427202, 427227, 138DIG9, 427228, 427247, 427244, 427373, 427276, 427257, B23P 1526
Patent
active
041364279
ABSTRACT:
The invention relates to improving the heat transfer properties in boiling liquids of tubes and other surfaces by applying a non-conductive very porous reticulated organic foam layer in contact with the tube surface, and then electroplating a metal coating on exposed portions of the tube to build up a matrix of metal through the porous portions of the foam layer. Preferably, the tube is copper and the plating consists of an electroplated layer of copper. The foam is preferably in the form of a thin tape which is spirally wound about the tube. Pyrolyzation of the foam after plating provides a network of interconnected pores in the metal matrix which improves the heat transfer performance of the tube. The plated tube may also be swaged.
REFERENCES:
patent: 3082611 (1963-03-01), Alvis et al.
patent: 3979818 (1976-09-01), Groch et al.
patent: 3990862 (1976-11-01), Dahl et al.
patent: 4075376 (1978-02-01), Jaeger
Trans. Inst. Met. Finishing, 1954, 31, 517-526, "The Electrodeposition of Porous Metal," by Faust et al.
Clark Barry L.
Hoatson Jr. James R.
Lanham C. W.
Page II William H.
Rising V. K.
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