Sand injector retainer insert

Details Sand injector retainer insert Sand injector retainer insert

1992-12-04

1994-04-05

Bradley, Paula A.

Metal founding

Means to shape a forming surface

Including means for compacting particulate fluent mold...

B22C 1524

Patent

active

052996220

ABSTRACT:
A blow tube unit includes a retainer insert assembly with a restrictor and an injector blow tip. The restrictor includes restricting means to prevent the communication of a thermosetting fluent material from a reservoir to a sand core mold in the absence of blow cycle pressure. Constructed from a single block of metal, the restrictor is detachably secured to a lower portion of the blow tube unit in order to allow for removal and cleaning. The injector blow tip is made from an elastomeric material and is detachably secured to a lower portion of the restrictor.

REFERENCES:
patent: 1910417 (1933-05-01), Zeman
patent: 2721363 (1955-10-01), Taylor
patent: 2761186 (1956-09-01), Peterson
patent: 2899724 (1959-08-01), Peterson
patent: 2911691 (1959-11-01), Peterson
patent: 3903952 (1975-09-01), Bego et al.
patent: 3987842 (1976-10-01), Chamden
patent: 4390056 (1983-06-01), Grove et al.
patent: 4836269 (1989-06-01), Bellis et al.

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