Method and system for manufacturing a coupler knuckle

Details Method and system for manufacturing a coupler knuckle Method and system for manufacturing a coupler knuckle

2007-12-04

2007-12-04

Johnson, Jonathan (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S368000, C213S0750GT

Reexamination Certificate

active

11296051

ABSTRACT:
A method for manufacturing a railcar coupler knuckle includes providing a cope mold portion and a drag mold portion. The cope and drag mold portions have internal walls defining at least in part perimeter boundaries of a coupler knuckle mold cavity. The method includes positioning one or two internal cores within either the cope mold portion or the drag mold portion. The one or two internal cores are configured to define a kidney cavity, a finger cavity and a pivot pin cavity of a coupler knuckle. The method includes closing the cope and drag mold portions with the one or two internal cores therebetween and at least partially filling the mold cavity with a molten alloy, the molten alloy solidifying after filling to form the coupler knuckle.

REFERENCES:
patent: 2688412 (1954-09-01), Kulieke
patent: 4024958 (1977-05-01), Kaufhold
patent: 4206849 (1980-06-01), Kaim
patent: 4605133 (1986-08-01), Altherr
patent: 4811854 (1989-03-01), Elliott
patent: 5582307 (1996-12-01), Hawthorne et al.
patent: 6622776 (2003-09-01), Bauer et al.
patent: 743098 (1956-11-01), None

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