Non-separating diffuser for holes produced by a two step...

Details Non-separating diffuser for holes produced by a two step... Non-separating diffuser for holes produced by a two step...

2005-05-24

2005-05-24

Evans, Geoffrey S. (Department: 1725)

Electric heating

Metal heating

Cutting or disintegrating

C219S069150

Reexamination Certificate

active

06897401

ABSTRACT:
A method for forming non-separating diffusers in a part includes fabricating at least one metering hole in a part, and fabricating at least one diffuser hole with an electrode comb in the part such that the diffuser hole intersects the metering hole at a transition region. The electrode comb includes a tooth including a nose comprised of a plurality of diffuser surfaces intersecting at a point on a tooth centerline. Each diffuser surface has a diffuser angle, and at least one of the diffuser surfaces is truncated by an offset from the tooth centerline.

REFERENCES:
patent: 4650949 (1987-03-01), Field
patent: 4762464 (1988-08-01), Vertz et al.
patent: 4808785 (1989-02-01), Vertz et al.
patent: 4850147 (1989-07-01), Baker
patent: 4922076 (1990-05-01), Cross et al.
patent: 6759621 (2004-07-01), Varin

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