Portable engine-pump assembly

Patent · Tue Feb 17 00:00:00 EST 1987

OSTI ID:7083879

Eberhardt, H A

This patent describes a portable engine-pump assembly that is compact and light in weight comprising: an internal combustion engine mounted with its crankshaft extending vertically, a centrifugal pump having an impeller mounted for rotation on a pump shaft within a volute chamber, means mounting the pump on and immediately beneath the engine with the pump shaft extending vertically in accurate alignment and concentricity with the engine crankshaft, means coupling the engine crankshaft and the pump shaft together so that the engine crankshaft drives the pump shaft, the pump comprising a pump body defining the volute chamber and providing a pump inlet passage and a pump discharge passage oriented in generally horizontal directions, the pump body defining an inlet chamber providing passages for the flow of liquid from the pump inlet passage into the impeller from both above and below same and including an upper body portion and a lower body portion, and an exhaust system for the engine including an exhaust passage contained in the upper body portion, a muffler having an inlet, and means providing flow communication between the exhaust passage and the inlet of the muffler.

• Assignee: Hale Fire Pump Co., Conshohocken, PA
• Patent Number(s): US 4643652
• OSTI ID: 7083879
• Resource Relation: Patent File Date: Filed date 4 Mar 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
CENTRIFUGAL PUMPS
ALIGNMENT
EXHAUST SYSTEMS
INTAKE STRUCTURES
PORTABLE EQUIPMENT
ROTATION
SHAFTS
VALVES
WEIGHT
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
MACHINE PARTS
MECHANICAL STRUCTURES
MOTION
PUMPS
330100* - Internal Combustion Engines