Sand casting mold riser/sprue sleeve

Details Sand casting mold riser/sprue sleeve Sand casting mold riser/sprue sleeve

1994-08-25

1995-06-20

Batten, Jr., J. Reed

Metal founding

Means to shape metallic material

United particle type shaping surface

164134, 164359, 164362, B22C 902, B22C 908

Patent

active

054254108

ABSTRACT:
The sprue/riser sleeve 40 has a tubular, preferably cylindrical wall 42 extending between an inlet end 48 and an outlet end 50. The sleeve 40 has a woven mesh filter extending across a central passageway 51 with a periphery 54 of the filter 52 embedded into the wall 42. The periphery 54 has three or more, evenly spaced tabs 56 formed thereon that project further into or through the wall to secure the filter to the wall without materially weakening the wall. Preferably, the filter has a square-shaped periphery 54 with corners 64 that define the tabs 56. The main portion of the periphery extends into the wall less that one-half the thickness of the wall, whereas the tabs extend into the wall a distance greater than one-half the thickness.

REFERENCES:
patent: 1030066 (1912-06-01), Erlandson
patent: 4154289 (1979-05-01), Jeanneret
patent: 4798615 (1989-01-01), Fukuta et al.
patent: 4928746 (1990-05-01), Butler et al.

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