Welding position detector with cooling and cleaning means

Details Welding position detector with cooling and cleaning means Welding position detector with cooling and cleaning means

1994-09-08

1995-08-15

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21912434, 359509, B23K 9095

Patent

active

054421551

ABSTRACT:
A cooling and cleaning unit incorporated in a welding position detector having a gas introducing conduit for introducing a single flow of a cooling gas under pressure into a hermetically sealed chamber of a casing for encasing therein a sensor unit of the welding position detector in the form of a convectional flow of cooling gas circulating around the sensor unit and removing heat from the sensor unit, a check valve unit having a gas inlet and a gas outlet and permitting the cooling gas under pressure to be discharged from the hermetically sealed chamber toward an outer face of a protective window of the welding position detector in the form of cleaning gas under pressure to thereby clean the outer face of the protective window while forming a gas curtain extending over the outer face of the protective window so as to prevent welding fumes and sputter from attaching to and depositing onto the outer face of the protective window of the welding position detector.

REFERENCES:
patent: 4491715 (1985-01-01), Voronin et al.
patent: 4555613 (1985-11-01), Shulman
patent: 4652133 (1987-03-01), Antoszewski et al.
patent: 4658113 (1987-04-01), Vingerling
patent: 4784491 (1988-11-01), Penney et al.
patent: 4794223 (1988-12-01), Barkman et al.
patent: 4859829 (1989-08-01), Dufour
patent: 4896247 (1990-01-01), Cozer
patent: 5264678 (1993-11-01), Powell et al.

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