Fluid handling – With liquid valves or liquid trap seals – Liquid seal in liquid flow line; flow liquid forms seal
Patent
1992-04-30
1993-09-07
Walton, George L.
Fluid handling
With liquid valves or liquid trap seals
Liquid seal in liquid flow line; flow liquid forms seal
4292, 4DIG14, 137550, 210236, 210435, F16L 5524, E03C 1282, E03C 126, B01D 3516
Patent
active
052419797
ABSTRACT:
An improved structure of an elbow pipe having filter to filter waste material contained in polluted water. The filter is provided within a cup which is screwed tight to the bottom region of the pipe and can be easily unscrewed for the removal of the blocked waste material.
REFERENCES:
patent: 4032455 (1977-06-01), Kale
patent: 4164048 (1979-08-01), Kampfer
patent: 4179762 (1979-12-01), Barnhardt et al.
patent: 4230582 (1980-10-01), Tuleja
patent: 4539718 (1985-09-01), Haer
patent: 5038816 (1991-08-01), Weltsch
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