Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1980-12-01
1981-11-24
Spiegel, H. Jay
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
137115, 137122, 137391, 137423, 137563, G05D 11035
Patent
active
043018246
ABSTRACT:
In a fluid circulation system of the type having a pump for supplying pressurized fluid to an apparatus requiring a supply of pressurized fluid, a sump containing a volume of fluid from which the pump draws its supply, and an overage fluid return line, a sump level maintenance system including a remote fluid reservoir disposed above the sump, a housing in communication with the fluid in the sump and defining a pair of ports in communication with respective ones of the reservoir and the overage return passage, a float structure operative to open both ports when the sump level is below a low level and to close the port to the reservoir to prevent replenishment when the sump level is between the low level and a high level and to close both ports when the sump level is above the high level to prevent overage fluid from returning to the sump, and a fluid conduit from the overage passage to the reservoir operative to divert overage to the reservoir when the second port is closed thereby depleting the fluid volume in the reservoir.
REFERENCES:
patent: 575172 (1897-01-01), Rousset
patent: 2729227 (1956-01-01), Hearn
patent: 2792912 (1957-05-01), Kangas
patent: 2807275 (1957-09-01), Steioley
patent: 3743444 (1973-07-01), Kazama et al.
patent: 3789865 (1974-02-01), Borman
patent: 3930423 (1976-01-01), Craig
patent: 4096879 (1978-06-01), Serur et al.
General Motors Corporation
Schwartz Saul
Spiegel H. Jay
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