Receptacles – Outlet or junction box type – Sectional receptacle
Patent
1989-06-19
1990-11-20
Pollard, Steven M.
Receptacles
Outlet or junction box type
Sectional receptacle
220445, 220469, G01M 300
Patent
active
049712144
ABSTRACT:
A double-walled thickener tank has an outer shell bottom and an inner shell bottom spaced to form interconnected or a discrete void space therebetwee. An incompressible load-carrying permeable material such as oil-impregnated sand is compacted in the void space(s) to provide a support for the inner shell bottom and confined fluid in the tank. Any leakage of fluid from the tank through the inner shell bottom is initially confined in the void space and conveyed down a slight slope on the top surface of the outer shell bottom so the leaking fluid drains into an interior space of a double-wall or single-wall discharge cone at the center of the tank where the leak and void spaces are accessed to detect any leaking of fluid from the tank. Various modifications utilize either a replacement of a new inner tank liner, a bottom sheet of imprevious material such as a plastic liner; a series of pie-shaped steel sheets forming each bottom; or a grooved concrete bottom, all providing a flat or inclined void space, with or without load-carrying permeable material therein, which is accessed for leak detection.
REFERENCES:
patent: 3748865 (1973-07-01), Laverman et al.
patent: 4374478 (1983-02-01), Secord
patent: 4651894 (1987-03-01), Ebert
patent: 4653312 (1987-03-01), Sharp
patent: 4673102 (1987-06-01), Bullock, Jr.
patent: 4715513 (1987-12-01), Shelton, Jr.
patent: 4840283 (1989-06-01), Lillywhite
Horn Michael E.
Lillywhite M. James
Baker-Hughes, Inc.
Pollard Steven M.
LandOfFree
Double shell thickener does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Double shell thickener, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double shell thickener will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-449624