Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1987-01-27
1988-05-03
Rosenbaum, Mark
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29 33D, 29 33J, 29 33T, 29525, 29557, 29792, B21D 5300
Patent
active
047410817
ABSTRACT:
A T-fitting is formed from two precut lengths of tubing of the same, relatively small, inner and outer diameter. One length of tubing is formed with a reduced diameter neck section at one end whose outer diameter is approximately equal to its normal undeformed inner diameter. The second length of tubing is placed in a clamp which is advanced to successive work stations where a sidewall is punched and then drilled through to form a radial hole in one side of a diameter substantially equal to the inner diameter of the tubing. At a subsequent work station, the neck section of the first length of tubing is driven into a force fit into the drilled hole in second length of tubing. The assembled tubing is then removed from the clamp, brazed into a permanent T-tube assembly. The portion of the neck section which projects into the passage of the second length of tubing is then trimmed off by a drilling or reaming operation.
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Rosenbaum Mark
Tube Fab of Afton Corporation
Wallace Ronald S.
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