Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1982-02-16
1984-03-06
Goldberg, Howard N.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
291574, 291573R, B23P 1526
Patent
active
044345399
ABSTRACT:
A heat exchanger including a first piece of heat conductive tubing wound in helical configuration defining a plurality of first helical flights having an outboard portion thereon and a second piece of heat conductive tubing wound in a helical configuration defining a plurality of second helical flights having an inboard portion thereon where the first and second helical flights are arranged so that the outboard portions of the first helical flights are in heat conducting contact with the inboard portions of the second helical flights and where the first and second helical flights have been formed by forcing the outboard portions of the first helical flights and the inboard portions of the second helical flights together so that the portions are forced into heat conducting contact with each other. The disclosure also describes the method of manufacturing the heat exchanger and the method of operating the heat exchanger.
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Blackshaw Andrew L.
Sanborn David M.
E-Tech, Inc.
Goldberg Howard N.
Powell B. J.
Rising V. K.
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