Pump for viscous fluids

Details Pump for viscous fluids Pump for viscous fluids

1990-05-04

1992-12-08

Bertsch, Richard A.

Pumps

With signal, indicator, or inspection means

417 43, F04B 4900, F04B 2100

Patent

active

051692929

ABSTRACT:
An oval gear pump for shear-sensitive fluids particularly suited for use in dispensing metered amounts of food syrups, condiments, or other thick or viscous liquids. The viscosity of some of such materials tends to degrade when excessive agitation is incurred. The gear pump minimizes such agitation by sweeping integrated masses of substantial volume between the inlet and the outlet. The pumping system also provides a flow-sensing device including a tubular magnet movable against spring pressure by fluid flow to an operated position. When the magnet is in the operated position, an adjacent external switch is operated to produce a signal indicating flow. The pumping system is particularly adapted for use in connection with ice cream dispensing machines.

REFERENCES:
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patent: 4740140 (1988-04-01), Benson
patent: 4874012 (1989-10-01), Velie
patent: 4955785 (1990-09-01), Cohen
patent: 5019678 (1991-05-01), Templeton et al.

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