Double end derail
AssigneeWestern-Cullen-Hayes, Inc.
InventorsLonnie Lee Hart, Ronald Pease
Life of this patent
Estimating the term…
Abstract
A bi-directional derail is provided with an improved construction which reduces the thrust load imparted by a rail vehicle wheel against the derail, while maintaining the weight and material cost of the derail within practical limits. In a preferred embodiment, the derail is provided with a derail shoe having deflector bars which are reinforced with deflector rail support flanges for increased strength and which have an extended length and gradual deflection angle, preferably no more than 15 degrees from the longitudinal axis of the rail.
Claims11
A bi-directional derail for engaging and thereby derailing a wheel of a railed vehicle, the derail comprising:
- a derail shoe assembly for engaging the wheel of the railed vehicle, which derail shoe assembly includes a deflecting bar having a deflection surface which extends at an angle to a rail of not more than 15 degrees, and
- a derail guide assembly, for guiding the derail shoe assembly for selective movement between a wheel engaging position, in which the derail shoe assembly is positioned to engage the wheel of the railed vehicle traveling on the rail, and a retracted position, in which the derail shoe assembly is situated beside the rail.
A bi-directional derail for derailing a railed vehicle from a rail comprising:
- a derail shoe assembly having a derail shoe including a deflecting rail for engaging a wheel of the railed vehicle, the deflecting rail including two deflecting surfaces extending at an angle of not more than 15 degrees from the longitudinal extent of a rail;
- a derail guide assembly, for guiding the derail shoe assembly for selective movement between a wheel-engaging position, in which the derail shoe assembly is positioned to engage the wheel of the railed vehicle traveling on the rail, and a retracted position, in which the derail shoe assembly is situated beside the rail;
- the derail shoe assembly including a deflecting bar having a deflection surface which extends at an angle to the rail of not more than 15 degrees, at least one guide block provided on the derail guide assembly for increasing the resistance to torsional forces on the derail guide assembly, and at least one deflection rail support flange abutting the deflecting bar for increasing strength against lateral loading thereof.
In a bi-directional derail for derailing a wheel of a rail vehicle from either of two directions and being selectively movable from a retracted position to a wheel-engaging position, the improvement comprising:
- an elongated derail shoe having a first deflector bar for derailing a rail car traveling in a first direction on a rail and a second deflector bar for derailing a rail car traveling in a direction opposite to said first direction, said first and second deflector bars being positioned at not more than a 15 degree angle relative to the longitudinal axis of said rail.
Dependencies are inferred from the claim text.