B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
78/40
B23K 9/32 (2006.01)
Patent
CA 1250158
ABSTRACT OF THE DISCLOSURE A fume-extracting welding gun has an internal fume-extracting passage and comprises a handle member and a head member which have a normally-fixed angular position but which can be adjusted to another selected angular position. The head member has variable dimension passageways therethrough to the fume-extracting passageway to enable the vacuum applied at the welding site by the fume-extracting passageway to be varied by varying the flow of air through the passageways. The passageways are provided by openings in overlapping portions of a sleeve member and the head member and rotation of the sleeve member varies the passageway dimension.
516208
Mann Robert N.
Sim & Mcburney
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