Electric heating – Metal heating – Of cylinders
Patent
1982-07-26
1984-05-29
Reynolds, B. A.
Electric heating
Metal heating
Of cylinders
219 1053, 219 1081, 219 1073, 1562744, 1562746, 264 26, 264163, H05B 654
Patent
active
044517211
ABSTRACT:
A method for dielectric welding together of two substantially rigid thermoplastic flanged parts (or "subshells") to form a flangeless, typically thin-walled, thermoplastic shell. The method may be praticed using a pair of relatively movable, clamping electrodes, which define a shell-receiving hollowed space bounded by flange-engaging areas, operate together to create a flangeless weld. The characteristics of the dielectric field application, that is, making the dielectric field most concentrated along the line forming the proximal edge of the flanges, the clamping action, and the timing of various operations are all important features of the invention. One of the preferred embodiments utilizes a double-beveled cutting electrode.
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patent: 3783156 (1974-01-01), Kuroda
patent: 3790420 (1974-02-01), Jenei
Leung Philip H.
Reynolds B. A.
S. C. Johnson & Son Inc.
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