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US 6,662,970 B1Granted
On demand oil dispensing system
AssigneeGlen T. Presley
InventorGlen T. Presley
Life of this patent
Estimating the term…
Abstract
An on demand oil dispensing system for motor vehicles including an electric motor driving a gear pump having flow paths including an intake line connected to an oil reservoir and a discharge line having a manual shut-off valve at the end thereof and a pressure sensing switch positioned in the discharge line which cuts off power to the motor and pump when the pressure in the discharge line rises above a set level and a reverse flow check valve in the discharge line upstream of the pressure sensing switch.
Claims11
An on demand oil dispensing system comprising:
- an electric motor supplied by a power line;
- a gear pump driven by said electric motor having a flow path including intake and discharge lines;
- an oil reservoir connected to the pump intake line;
- a shutoff valve in the discharge line;
- a pressure-sensing switch having a single operating point positioned in the discharge line upstream of the shutoff valve which cuts off the power to the motor when the pressure in the discharge line rises above a set level;
- and
- a reverse flow check valve in the discharge line upstream of the pressure-sensing switch.
4 more elements
An on demand fluid dispensing system comprising:
- an electric motor supplied by a power line;
- a gear pump driven by said electric motor having a flow path including intake and discharge lines;
- an oil reservoir connected to the pump intake line;
- a shutoff valve in the discharge line;
- a pressure-sensing switch having a single operating point in the discharge line positioned between the pump and the shutoff valve which cuts off the power to the motor when the pressure in the discharge line rises above a set level;
- a reverse flow check valve in the discharge line between the pressure sensing switch and the pump;
- a pressure relief valve means connecting the pump discharge line to the pump intake line opening flow across the pump to atmospheric pressure when the intake line pressure exceeds a certain pressure;
- and
- a flow meter positioned in the pump flow path for measuring specific flow through said pump.
6 more elements
Dependencies are inferred from the claim text.