Pipes and tubular conduits – With closures and plugs – Lateral opening
Patent
1979-07-23
1981-05-26
Schmidt, Frederick R.
Pipes and tubular conduits
With closures and plugs
Lateral opening
138104, 138116, 138162, 174 97, F16L 5510
Patent
active
042692318
ABSTRACT:
Ducting for installing below a surface, which ducting comprises a body portion and a lid, the body portion having a first longitudinal channel, a pair of second longitudinal channels arranged one on each side of the first channel, and at least two separate channel insert members which are a removable fit in the first channel and which are for receiving elongate members, the lid having retainer means for clipping in the second channels, each channel insert member having base and side walls, and the channel insert members occupying substantially the entire cross-sectional area of the first channel.
REFERENCES:
patent: 3420017 (1969-01-01), Brugger et al.
patent: 3745229 (1973-07-01), de Vos
patent: 3769445 (1973-10-01), Bregenzer
patent: 3927698 (1975-12-01), Johannsen
Happer Systems Limited
Schmidt Frederick R.
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