| Patent application number | Description | Published |
|---|
| 20090289021 | RAILCAR COUPLER LOCK WITH INCREASED CHAMFER ON THE KNUCKLE SHELF SEAT - An improved lock for a railroad coupler, said improvement comprising an increased chamfer on a knuckle shelf seat. | 11-26-2009 |
| 20090289022 | RAILWAY COUPLER BODY IMPROVEMENTS TO IMPROVE KNUCKLE ROTATION - An improved coupler body having an area of increased material in the upper lock chamber. | 11-26-2009 |
| 20090289023 | KNUCKLE FORMED FROM PIVOT PIN AND KIDNEY CORE AND ISOLATED FINGER CORE - A method for manufacturing a railcar coupler knuckle includes providing cope and drag mold portions having internal walls defining at least in part perimeter boundaries of a knuckle mold cavity; positioning a first internal core within either the cope mold or the drag mold portions, the first internal core configured to define a kidney cavity and a pivot pin hub as a single void within the knuckle; positioning a second internal core within either the cope mold portion and the drag mold portion, the second internal core configured to define a finger cavity; closing the cope and drag mold portions with the 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 knuckle, wherein the first internal core defines the kidney cavity and the pivot pin hub of the coupler knuckle, and wherein the second internal core defines the finger cavity of the knuckle. | 11-26-2009 |
| 20090289024 | RAILWAY COUPLER CORE STRUCTURE FOR INCREASED STRENGTH AND FATIGUE LIFE OF RESULTING KNUCKLE - A finger core for forming the front part of a knuckle for a railcar, said finger core comprising a single opening to form a single rib at the horizontal center line of the resulting knuckle. | 11-26-2009 |
| 20090294395 | KNUCKLE FORMED WITHOUT A FINGER CORE - 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 having internal walls defining at least in part perimeter boundaries of a coupler knuckle mold cavity, wherein the mold cavity includes a finger section; positioning at least one internal core within either the cope mold portion or the drag mold portion, the at least one internal core configured to define a kidney cavity and a pivot pin cavity within a coupler knuckle; closing the cope and drag mold portions with the single core therebetween; and at least partially filling the mold cavity with a molten alloy, the molten alloy solidifying after filling to form the coupler knuckle, wherein the at least one core defines the kidney and pivot pin cavities, and the finger section of the mold cavity defines at least one finger cavity of the coupler knuckle. | 12-03-2009 |
| 20090294396 | CENTRAL DATUM FEATURE ON RAILROAD COUPLER BODY AND CORRESPONDING GAUGES - A coupler body for a railcar coupler, said coupler body comprising at least one central datum feature that does not wear during coupler use. | 12-03-2009 |
| 20110168655 | USE OF NO-BAKE MOLD PROCESS TO MANUFACTURE RAILROAD COUPLERS - A railroad coupler assembly having at least a body and a knuckle both formed in a no-bake manufacturing process, the body and the knuckle having dimensional tolerances of distances between features that wear during operation that are about half those obtained from a body and a knuckle manufactured by a green sand process, resulting in increased fatigue life compared to the body and the knuckle manufactured by a green sand process. | 07-14-2011 |
| 20120000877 | Knuckle Formed Through The Use Of Improved External and Internal Sand Cores and Method of Manufacture - A method for manufacturing a railcar coupler knuckle, said method includes providing a cope mold portion and a drag mold portion. The cope and drag mold portions have internal walls that define at least in part perimeter boundaries of a coupler knuckle mold cavity. At least one chill core is positioned within one of the cope mold portion and the drag mold portion. The cope and drag mold portions are closed, with the at least one core therebetween, and the closed cope and drag mold portions and the chill core define a parting line. The mold cavity is filled with a molten metal, which solidifies after filling to form a casting. The casting includes a pulling face portion defined by the chill core, and a central section of the pulling face portion does not contain the parting line and requires no finish grinding upon its formation. | 01-05-2012 |
