| 摘要 |
The gas-exhaustion equipment comprise two or more tubular arms, the first (1) attached to a bracket (9) at one end and connected to a suction fan, and the second (1') attached to the other end of the first, and with a suction cowl (11) hinging at the other. Thus the arms and cowl hinge in relation to each other and to the bracket in the same vertical plane. All hinges are fixed inside the arms and protrude from their ends, being enclosed by connecting bellows (25-27). The hinges are plate-structures (2,5,2',5') extending between the top and bottom sides of the respective arms and to which they are fixed, part of each protruding beyond the arm end. USE/ADVANTAGE - Gas exhaustion equipment. The hinges can be in similar pairs, so that all arms equipped with them are identical.
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