Pipe joints or couplings – With casing – lining or protector – Insulated
Patent
1988-02-29
1989-08-29
Joyce, Harold
Pipe joints or couplings
With casing, lining or protector
Insulated
285184, 285226, B08B 1500
Patent
active
048606448
ABSTRACT:
Fumes are drawn by a vacuum source from a scoop through conduit. The conduit provides its own structure with rigid tubes and which are held with respect to one another, a mounting collar and the scoop by joint attaching assemblies and. In this way, the fume exhauster requires minimal structure. Also, joint assemblies minimize flow resistance since they are located along inside conduit curvatures.
REFERENCES:
patent: D285832 (1986-09-01), Nederman
patent: 3818817 (1974-06-01), Nederman
patent: 4259897 (1981-04-01), Nederman
patent: 4540202 (1985-09-01), Amphoux et al.
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Trunkline--Porta-Trunk (PT-1000 Portable Source Collector
Fume Exhausters Swing-Arc Models 105 and 106.
Belcher Mark D.
Kohl James W.
Donaldson & Company, Inc.
Joyce Harold
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