LOUIS ECKERT JR
Engineers in Delaware
License number
Pennsylvania PE007657L
Category
Engineers
Type
Professional Engineer
Address
Address
2
Delaware
Newtown Square, PA 19073
Newtown Square, PA 19073
Professional information
Use Of K-Spiral, Bend, Jog, And Wiggle Shapes In Design Of Railroad Track Turnouts And Crossovers
US Patent:
2006020, Sep 14, 2006
Filed:
Apr 23, 2004
Appl. No.:
10/553889
Inventors:
Louis Klauder Jr - Newtown Square PA, US
International Classification:
E01B 5/00
US Classification:
238015000
Abstract:
Railroad track transition curves having shapes referred to as K_spirals, Bends, Jogs, and Wiggles are suitable for use in various situations where railroad track transition curves are needed and have good dynamic characteristics. Such shapes can be used for design of railroad track turnouts and crossovers. In order for such shapes to be incorporated into turnouts and crossovers, rail switch arrangements are provided that can accommodate the superelevation profiles on which the favorable dynamic characteristics of those shapes depend. Such shapes can be used for turnout and crossover design in conjunction with two mechanical switch arrangements that are themselves well known, namely the transfer table and stub switch arrangements, and with two switch arrangements that are variants of the commonly used movable point arrangement, namely an arrangement in which the through point rail is wide over its whole length and an arrangement using a through point rail of relatively conventional taper and width but one that is bowed downward between its point and the frog.
Railroad Curve Transition Spiral Design Method Based On Control Of Vehicle Banking Motion
US Patent:
2003020, Oct 30, 2003
Filed:
Dec 17, 2002
Appl. No.:
10/311613
Inventors:
Louis Klauder Jr - Newtown Square PA, US
International Classification:
G06F007/60
US Classification:
703/002000
Abstract:
Transition spirals for successive sections of railroad track with different degrees of curvature are designed by first specifying the manner in which the bank angle of the track should change with distance along a transition spiral. Functional forms for bank angle are provided as a function of distance along the spiral, which can also be used in traditional conceptual frameworks, and interpreted in that context to define track curvature as a function of distance. Also included are functional forms obtained by raising the longitudinal axis about which bank angle change takes place so that the axis is above the plane of the track. The resulting transition spirals reduce the transient lateral accelerations to which passengers are subjected when passenger vehicles traverse the spirals and reduce the damaging transient lateral forces that heavy freight locomotives and freight cars apply to the track structure near the ends of the spirals.