Railway switches and signals – Switch-connected frogs
Reexamination Certificate
2006-02-07
2006-02-07
Jules, Frantz F. (Department: 3617)
Railway switches and signals
Switch-connected frogs
C246S461000
Reexamination Certificate
active
06994299
ABSTRACT:
An improved railroad frog, and method incorporating the same, for facilitating the intersection of rail lines in a more efficient, effective, and durable manner. In one aspect the invention is a railroad frog apparatus comprising: a body having flangeways that intersect; and at least one connection plug extending from the body for connecting to a running rail; the at least one connection plug having a cross-sectional profile that is substantially identical to a cross-sectional profile of the running rail. In another aspect the invention is a railroad frog apparatus having at least one flangeway having a floor with a convex surface formed of at least one arc. Such geometric surface shape of the floor reduces rail batter, undesirable vibration, and damage to train wheels.
REFERENCES:
patent: 211607 (1879-01-01), Wharton
patent: 254693 (1882-03-01), Reed
patent: 258259 (1882-05-01), Staples
patent: 497554 (1893-05-01), Samuel et al.
patent: 658356 (1900-09-01), Du Pont
patent: 815869 (1906-03-01), Shoemaker
patent: 1348447 (1920-08-01), Reid
patent: 3022968 (1962-02-01), McGrath
patent: 3480072 (1969-11-01), Heim et al.
patent: 4514235 (1985-04-01), Augustin et al.
patent: 5042755 (1991-08-01), Testart
patent: 5082214 (1992-01-01), Testart
patent: 5100046 (1992-03-01), Allegrucci et al.
patent: 5170932 (1992-12-01), Blumauer
patent: 5375797 (1994-12-01), Willow
patent: 5413442 (1995-05-01), Grey
patent: 5496004 (1996-03-01), Kuhn
patent: 5531409 (1996-07-01), Willow
patent: 5598783 (1997-02-01), Lund
patent: 5618013 (1997-04-01), Mugg
patent: 5622312 (1997-04-01), Martin
patent: 5746400 (1998-05-01), Remington et al.
patent: 5845881 (1998-12-01), Young et al.
patent: 5918806 (1999-07-01), Keightley et al.
patent: 6177205 (2001-01-01), Kais et al.
patent: 6266866 (2001-07-01), Ramirez et al.
CMI-Promex, Inc.
Fein Michael B.
Jules Frantz F.
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