Trailer shield assembly for a welding torch

Details Trailer shield assembly for a welding torch Trailer shield assembly for a welding torch

1988-02-16

1989-06-13

Goldberg, E. A.

Electric heating

Metal heating

Nonatmospheric environment at hot spot

219 72, B23K 916

Patent

active

048394890

ABSTRACT:
A trailer shield assembly (10) having a housing (24) with an open lower side and a welding torch (12) mounted so that a welding tip portion (48) of the torch (12) extends through the lower side of the housing (24). A flexible gas guide (76) is affixed to a rear wall (74) of the housing (24) and has an interior (116) in communicating relation with a welding region (34) of the housing (24). A flexible shield gas manifold (90) having a plurality of spaced openings (92) therein is disposed in an upper region (110) of the gas guide (76) and is connectible to a source (11) of shield gas. A diffuser (112) surrounds the flexible manifold and serves to distribute shield gas in an even layer downwardly to cover a hot weld. A pair of openings (96) in the flexible manifold (90) communicates with a second gas manifold (32) disposed in an upper region of the housing (24), with this second gas manifold (32) being provided with an aluminum gas diffuser (30). Diffuser (30) distributes shield gas ahead of torch (12) to cover metal preheated by this welding operation.

REFERENCES:
patent: 2856510 (1958-10-01), Jones et al.
patent: 2860074 (1958-12-01), Ronay
patent: 2902587 (1959-09-01), Bernard
patent: 2918563 (1959-12-01), Ternisien
patent: 2959666 (1960-11-01), Tuthill
patent: 3450857 (1969-06-01), Webb
patent: 4005305 (1977-01-01), Nelson

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