Geometrical instruments
Patent
1975-01-03
1977-08-16
Lake, Roy
Geometrical instruments
285129, 285DIG8, 339122R, H01R 1354
Patent
active
040422917
ABSTRACT:
A pipe connecting apparatus of a multiple structure is adapted to contain electrical wiring for illumination facilities therein. The pipe connecting apparatus comprises a combination of (a) a connecting body of a polyhedral structure adapted to contain an electrical connecting means therein and serving as a branch base of the multiple piping, (b) at least two projecting pipes mounted in the connecting sides of said connecting body, (c) a communication pipe to be coupled with said projecting pipe, and (d) a sleeve for the coupling and fixing the projecting pipe to said communication pipe.
REFERENCES:
patent: 1233188 (1917-07-01), Coggeshall
patent: 1255264 (1918-02-01), Wright
patent: 2755331 (1956-07-01), Melcher
patent: 2826436 (1958-03-01), Hupp
patent: 3775828 (1973-12-01), Kopenhaver
Bicks Mark S.
Lake Roy
Moriyama Sangyo Kabushiki Kaisha
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