Joint for connecting lamp pipes

Details Joint for connecting lamp pipes Joint for connecting lamp pipes

1996-07-29

1998-02-03

Nicholson, Eric K.

Pipe joints or couplings

Connector for conduit housing electromagnetic line:

285307, 285397, 285907, F16L 7100, F16L 37088

Patent

active

057136084

ABSTRACT:
A hollow joint connects an upper lamp pipe and a lower lamp pipe. The hollow joint has a lower flange disposed on a lower rim of the hollow joint, an upper flange disposed on an upper rim of the hollow joint, a middle flange disposed on a middle portion of the hollow joint, a lower toothed portion disposed between the lower flange and the middle flange, and an upper toothed portion disposed between the upper flange and the middle flange. A lower ring encloses the lower toothed portion. The lower ring has an inserting end plate disposed on a first end of the lower ring and a retarding end plate disposed on a second end of the lower ring. An upper ring encloses the upper toothed portion. The upper ring has an inserting end plate disposed on a first end of the upper ring and a retarding end plate disposed on a second end of the upper ring.

REFERENCES:
patent: 95921 (1869-10-01), Mears
patent: 2744769 (1956-05-01), Roeder et al.
patent: 3342511 (1967-09-01), Galloway
patent: 4070119 (1978-01-01), Duer
patent: 5149149 (1992-09-01), Wu

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