Erosion resistant jet pump and method of making same

Details Erosion resistant jet pump and method of making same Erosion resistant jet pump and method of making same

1979-11-16

1981-07-28

Marbert, James B.

Fluid sprinkling, spraying, and diffusing

Rigid fluid confining distributor

Including flow passage liner

B05B 1500

Patent

active

042806623

ABSTRACT:
This invention provides an improved jet pump having a Venturi chamber defined by a coating of a ceramic or alloy material that is highly resistant to both stress and erosion. The coating is applied by the chemical vapor technique upon a heated substrate of graphite. The graphite is then removed to conform in configuration to that of the coating and reduce the graphite substrate to a thickness of less than 0.010 inches. A mass of low melting, high elastic modulus material is then cast around the graphite substrate with the coating adhered thereto to define an exterior cylindrical configuration. The cylindrical mass is then encased by heat shrinking within a jacket of steel or other similar low modulus, high tensile strength material so as to produce a significant compressive force in the coating.

REFERENCES:
patent: 3545679 (1970-12-01), McAllister et al.
patent: 3776472 (1973-12-01), Lock et al.

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