Pumps – With signal – indicator – or inspection means
Patent
1995-01-17
1996-10-29
Freay, Charles G.
Pumps
With signal, indicator, or inspection means
417313, 417392, 417547, 356440, 250576, F04B 2100
Patent
active
055690211
ABSTRACT:
A hydraulically operated pump for in-ground filtering and monitoring of ws or other fluid sources, including a hollow cylindrical pump housing with an inlet and an outlet, filtering devices positioned in the inlet and the outlet, a piston that fits slidably within the pump housing, and an optical cell in fluid communication with the pump housing. A conduit within the piston allows fluid communication between the exterior and one end of the piston. A pair of o-rings form a seal between the inside of the pump housing and the exterior of the piston. A flow valve positioned within the piston inside the conduit allows fluid to flow in a single direction. In operation, fluid enters the pump housing through the inlet, flows through the conduit and towards an end of the pump housing. The piston then makes a downward stroke closing the valve, thus forcing the fluid out from the pump housing into the optical cell, which then takes spectrophotometric measurements of the fluid. A spring helps return the piston back to its starting position, so that a new supply of fluid may enter the pump housing and the downward stroke can begin again. The pump may be used independently of the optical cell, as a sample pump to transport a sample fluid from a source to a container for later analysis.
REFERENCES:
patent: 1377895 (1921-05-01), Long
patent: 2563912 (1951-08-01), Belinkin
patent: 2979956 (1961-04-01), Warren
patent: 3200649 (1965-08-01), Peterson
patent: 3442136 (1969-05-01), Wilson, Jr.
patent: 3482451 (1969-12-01), Hrdina
patent: 3492946 (1970-02-01), Martin
patent: 3887305 (1975-06-01), Ho
patent: 4046011 (1977-09-01), Olsen
patent: 4438872 (1984-03-01), Dooley et al.
patent: 4475410 (1984-10-01), Jaeger
patent: 4489779 (1984-12-01), Dickinson et al.
patent: 4628750 (1986-12-01), Welker
patent: 5074154 (1991-12-01), Allen et al.
patent: 5249930 (1993-10-01), Pacquesi
patent: 5268736 (1993-12-01), Prather
patent: 5285932 (1994-02-01), Boudreau
patent: 5335067 (1994-08-01), Prather et al.
Hopkins Charles D.
Livingston Ronald R.
Toole, Jr. William R.
Dixon Harold M.
Freay Charles G.
Gottlieb Paul A.
Moser William R.
The United States of America as represented by the Department of
LandOfFree
Hydraulic pump with in-ground filtration and monitoring capabili does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic pump with in-ground filtration and monitoring capabili, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic pump with in-ground filtration and monitoring capabili will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1781207