Metal founding – Process – Shaping a forming surface
Reexamination Certificate
2005-05-03
2005-05-03
Stoner, Kiley S. (Department: 1725)
Metal founding
Process
Shaping a forming surface
C164S035000, C164S034000, C164S244000
Reexamination Certificate
active
06886621
ABSTRACT:
A sprue structure is specifically designed to facilitate the rapid filling of molded polystyrene patterns with molten metal. It comprises a down sprue and parallel columnar members that are connected to the down sprue. The flow of molten metal is initially downward through the first columnar member and then it reverses direction to flow upwardly through second and third columnar members so that the patterns to be cast receive molten metal as it travels upwardly through the second and third columnar members. This decreases the amount of pyrolyzation products that could otherwise flow through in-gates and into the patterns to be cast.
REFERENCES:
patent: 1027042 (1912-05-01), Golden
patent: 4240493 (1980-12-01), Wilmarth
patent: 4300617 (1981-11-01), Bauer
patent: 4721149 (1988-01-01), Hesterbert et al.
patent: 4766942 (1988-08-01), Wessman et al.
patent: 4802447 (1989-02-01), Corbett
patent: 4966220 (1990-10-01), Hesterberg et al.
patent: 5038847 (1991-08-01), Donahue et al.
patent: 5355930 (1994-10-01), Donahue et al.
patent: 5355931 (1994-10-01), Donahue et al.
patent: 5518060 (1996-05-01), Cleary et al.
patent: 5960851 (1999-10-01), Donahue
patent: 64-31550 (1989-02-01), None
patent: 6-55241 (1994-03-01), None
patent: 6-226422 (1994-08-01), None
Beumler, Jr. Howard W.
Blum Thomas D.
Hesterberg William G.
Wickman Dean A.
Andrus Sceales Starke & Sawall LLP
Brunswick Corp.
Lanyi William D.
Stoner Kiley S.
Tran Len
LandOfFree
Sprue for a lost foam casting system for biasing a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sprue for a lost foam casting system for biasing a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sprue for a lost foam casting system for biasing a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3398949