Title of Invention

METHOD OF PRODUCING A HIGH STRENGTH METAL PART WITHIN A DIE CAVITY

Abstract A metal alloy is heated to a molten state, and a grain refiner may be added. The refined molten alloy is poured into a large diameter shot sleeve (86) of a vertical die cast press (10) and on top of a shot piston (88). The shot sleeve is transferred to an injection station while the molten alloy cools to a semi−solid slurry with approximately fifty percent solids and a globular, generally non−dendritic microstructure. A center portion (A) of the slurry is injected upwardly by the piston through a gate opening (62) into a die cavity (50) while an outer, more solid portion (S2) is entrapped in an annular recess (63). After the slurry solidifies, the shot piston retracts, and the shot sleeve is transferred to a position where the residual biscuit (B) is removed. A second shot sleeve (86) filled with the molten alloy is transferred to the metal transfer station (82), and the process is repeated.
Full Text

Documents:

1904-CHENP-2004 AMANDED PAGES OF SPECIFICATION 17-11-2009.pdf

1904-CHENP-2004 CORRESPONDENCE OTHERS 17-11-2009.pdf

1904-CHENP-2004 FORM-1 17-11-2009.pdf

1904-CHENP-2004 OTHER DOCUMENT 17-11-2009.pdf

1904-CHENP-2004 OTHER PATENT DOCUMENT 17-11-2009.pdf

1904-chenp-2004 abstract.pdf

1904-chenp-2004 claims.pdf

1904-chenp-2004 correspondence others.pdf

1904-chenp-2004 description(complete).pdf

1904-chenp-2004 form-3.pdf

1904-chenp-2004 petition.pdf


Patent Number 239111
Indian Patent Application Number 1904/CHENP/2004
PG Journal Number 12/2010
Publication Date 19-Mar-2010
Grant Date 08-Mar-2010
Date of Filing 26-Aug-2004
Name of Patentee THT PRESSES INC
Applicant Address 7475 WEBSTER STREET DAYTON OH 45414
Inventors:
# Inventor's Name Inventor's Address
1 KAMM, RICHARD, J 879 BOLTON ABBEY LANE VANDALIA OH 45377
2 JORSTAD, JOHN, L 9112 DONORA DRIVE RICHMOND VA 23229
PCT International Classification Number B22C9/00
PCT International Application Number PCT/US02/37543
PCT International Filing date 2002-11-22
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 10/066,527 2002-01-31 U.S.A.