Annular RF sealer and method

Details Annular RF sealer and method Annular RF sealer and method

1988-06-06

1990-09-04

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1053, 219 1073, 219 1081, 1562744, 1562737, 1563806, H05B 654

Patent

active

049546783

ABSTRACT:
A radially compressible heating element is located about concentric overlapped heat fusible elements temporarily mounted upon a mandrel to form an annular seal between the heat fusible elements upon energization of the heating element.

REFERENCES:
patent: 3322590 (1967-05-01), Clark
patent: 4186292 (1980-01-01), Acker
patent: 4390832 (1983-06-01), Taylor
patent: 4490598 (1984-12-01), Minney et al.
patent: 4574173 (1986-03-01), Bennett
patent: 4628168 (1986-12-01), Nebergall et al.
patent: 4755649 (1988-07-01), Barker et al.

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