Plastic pipe welding apparatus and method

Details Plastic pipe welding apparatus and method Plastic pipe welding apparatus and method

1976-10-15

1979-01-02

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156289, 156306, 156294, 156583, 156304, 264248, 285284, 285423, 285286, 285DIG20, 428 36, B65H 6902, B29C 1900

Patent

active

041325788

ABSTRACT:
A method and apparatus for welding PVC pipe which includes a means to clamp and apply welding heat so that plastic pipes may be welded while under external pressure adapted to offset internal pressures. The method includes the steps of placing a clamp about a splice to be welded, tightening the clamp and applying heat through the clamp to the plastic in sufficient quantities to cause the plastic to fuse. The steps are carried out by utilizing an apparatus comprised of a clamp which is adapted to encompass the area to be welded and apply a constricting force to that area while heat is transferred through the clamping means to the plastic.

REFERENCES:
patent: 2360950 (1944-10-01), Kilgour
patent: 2601028 (1952-06-01), Kersten
patent: 2930634 (1960-03-01), Merritt
patent: 2963394 (1960-12-01), Wilkinson
patent: 3002871 (1961-10-01), Tramm et al.
patent: 3022209 (1962-02-01), Campbell
patent: 3035958 (1962-05-01), Wilkins
patent: 3235289 (1966-02-01), Jones
patent: 3506519 (1970-04-01), Blumenkranz
patent: 3620896 (1971-11-01), Glasgow
patent: 3788928 (1974-01-01), Wise
Hausman et al., Physics, 3rd Edition .COPYRGT. 1948, Chapter 14, pp. 248-249.

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