Pipe joints or couplings – With casing – lining or protector – Insulated
Patent
1985-07-01
1987-02-17
Corbin, John K.
Pipe joints or couplings
With casing, lining or protector
Insulated
350114, 73201, 285298, G02B 500, G02B 2322
Patent
active
046435239
ABSTRACT:
A meter reading apparatus includes a telescopic tubular viewer attached to the underground meter and provides a clear sight path through water in the meter box for easy meter reading. In a first embodiment, the viewer member is connected to the meter by a collar, brackets and clamps including a clevis and J-shaped connecting rod. In a second embodiment, the viewer is connected to the meter by a collar integrally formed with the meter and including threads for engaging the viewer. In both embodiments, the viewer is moisture tight and includes a transparent sealing lens at the top end, and an O-ring seal at the bottom end between the viewer and the meter. A coiled air tube may be provided to maintain ambient pressure inside the viewer during extension and retraction.
REFERENCES:
patent: 654615 (1900-07-01), Estill
patent: 1161882 (1915-11-01), Pettengill
patent: 1236265 (1917-08-01), Casson
patent: 2268263 (1941-12-01), Newell et al.
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patent: 3534603 (1970-10-01), Hook et al.
patent: 4215916 (1980-08-01), Bell et al.
patent: 4395091 (1983-07-01), Russo
patent: 4515437 (1985-05-01), Story
Blair Paul W.
Smedley James L.
Ben Loha
Corbin John K.
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