Above-ground storage system
This patent describes an above-ground waste oil storage system. It comprises: an outer tank, the outer tank having an open top; a substantially closed inner tank, the inner tank placed within the outer tank, the inner tank further comprising a tank oil inlet port, a tank oil discharge port, a vent port, and a level detection port, all of the ports in a top surface of the inner tank. The inner tank and the outer tank forming an annulus between the inner and the outer tanks; an air-operated diaphragm pump having a system oil inlet, a pump oil outlet, and a pump air inlet. The oil outlet connected to the tank oil inlet port; a disposal pipe extending upwards from the tank oil discharge port and downwards into the inner tank; a float valve assembly; and a substantially frustroconical cover over the annulus.
- Assignee:
- Pacific Environmental Industries, San Jose, CA
- Patent Number(s):
- US 4890983; A
- Application Number:
- PPN: US 7233314A
- OSTI ID:
- 6915558
- Resource Relation:
- Patent File Date: 17 Aug 1988
- Country of Publication:
- United States
- Language:
- English
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