Method and apparatus for simultaneously forming a plurality of o

Details Method and apparatus for simultaneously forming a plurality of o Method and apparatus for simultaneously forming a plurality of o

1990-09-10

1992-04-21

Rose, Robert A.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51413, 51319, B24C 504

Patent

active

051055880

ABSTRACT:
An improved method and apparatus for abrasive jet machining. A special spray nozzle unit is provided which is mounted within a cavity in a retaining block. Each nozzle unit is preferably made of multiple components secured together within the cavity. Also, such unit includes at least two passageways therethrough. In a preferred embodiment, the unit is divided into two heads, each head being substantially triangular with a flattened apex. The retaining block has at least one port therethrough which communicates with the passageways in the heads. A flow of particulate materials into the block passes through the passageways in the heads, simultaneously producing multiple particulate streams. The multiple streams may then be directed toward a substrate in order to simultaneously produce a plurality of openings through the substrate.

REFERENCES:
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patent: 2907200 (1956-02-01), Roberts et al.
patent: 3053016 (1962-09-01), Johnston et al.
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patent: 3257759 (1963-07-01), Millhiser et al.
patent: 3514851 (1970-06-01), Perkins et al.
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patent: 4232059 (1980-11-01), Profitt
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patent: 4272612 (1981-06-01), Oliver
patent: 4528782 (1985-07-01), Bean
Article by Ingulli, C. N., entitled "Abrasive Jet Machining," published in The Tool and Manufacturing Engineer, pp. 28 and 30-33 (Nov. 1967).
Instruction manual from Comco, Inc. (May 1984) involving MB102 Microblaster.
Literature on "Airbrasive" nozzles by S. S. White Industrial Products.

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