Pipe joints or couplings – Elbow
Patent
1993-08-16
1995-02-21
Kwon, John T.
Pipe joints or couplings
Elbow
285127, 403205, 403 3, 174 683, F16L 2700
Patent
active
053909682
ABSTRACT:
A flat elbow/one direction tee fitting having a hollow generally L-shaped body including a pair of angularly spaced apart legs joined at a corner and partially defined by rectilinearly extending outer sidewalls and an arcuate inner sidewall. Each of the two legs has a raceway receiving opening at its free end. The corner defines a knockout which is removeable to form a third raceway receiving opening. The body is defined by a mounting base and a cover releasably retained in snap together assembly with the mounting base.
REFERENCES:
patent: 1528252 (1925-03-01), House
patent: 1669447 (1928-05-01), Boyton et al.
patent: 1681097 (1928-08-01), Church
patent: 1861314 (1932-05-01), McAndrew
patent: 2790653 (1957-04-01), Murphy
patent: 4951716 (1990-08-01), Tsunoda et al.
patent: 5161580 (1992-11-01), Klug
'Hubbell Incorporated
Haesche Frederick J.
Kwon John T.
Lee Michael S.
Presson Jerry M.
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