Hollow tie railroad switching assembly

Details Hollow tie railroad switching assembly Hollow tie railroad switching assembly

2007-01-30

2007-01-30

Le, Mark T. (Department: 3617)

Railway switches and signals

Switches

Tie bars

C246S162000, C246S220000, C246S401000, C246S448000, C246S450000, C246S452000, C246S476000

Reexamination Certificate

active

10614755

ABSTRACT:
A switching assembly includes a pair of hollow ties, a pair of supports, and a linkage. The linkage extends generally through the hollow ties, whereby the cribs are generally free of linkage components, and the ballast in the cribs can be compacted with known automated machinery. The linkage includes a number of lugs and a number of rods, with the rods each being formed from standard bar stock and threaded, and with the linkage configuration avoiding the need to custom bend any of the rods. The hollow ties are formed from generally available standard box section steel, as are the supports. The spacing between the hollow ties can be varied in accordance with the pitch of the other rail ties of the railroad switch. Each hollow tie can include a heater. The switching assembly is highly adjustable, which makes it suitable for use in numerous different track configurations.

REFERENCES:
patent: 2115902 (1938-05-01), Bone
patent: 2213500 (1940-09-01), Mock
patent: 2497502 (1950-02-01), Huber
patent: 4637579 (1987-01-01), Hartung
patent: 5562267 (1996-10-01), Heim et al.
patent: 5620156 (1997-04-01), Berggren et al.
patent: 6158698 (2000-12-01), Click et al.
patent: 6290189 (2001-09-01), Heim
patent: 6543727 (2003-04-01), Click et al.
patent: 6648276 (2003-11-01), McQuistian
patent: 2002/0060273 (2002-05-01), Schwiede

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