Title:
【発明の名称】複合形態のレール・スイッチ
Document Type and Number:
Japanese Patent JPH09502776
Kind Code:
A
Abstract:
An improved geometry for a split switch rail turnout a compound point rail leading to a curved closure rail that is linear and tangent through the switch frog. The switch point rail includes a proximal portion curved in the same radius as the closure rail, and a distal end portion that is linear and tangent to the proximal portion. The linear distal end portion of the point rail provides an entry angle of the switch point that is the same as the angle of attack of a wheel truck encountering the turnout, and also provides the shortest possible switch point length and the greatest possible radius of curvature of the closure rail. The angle of attack and the curvature of the closure rail can be optimized to produce a split switch turnout that permits high speed through the turnout while minimizing wear and maintenance costs.
Inventors:
Willow, Robert E
Application Number:
JP50921395A
Publication Date:
March 18, 1997
Filing Date:
August 29, 1994
Export Citation:
Assignee:
Willow, Robert E
International Classes:
E01B7/00; (IPC1-7): E01B7/00
Attorney, Agent or Firm:
Kyozo Yuasa (6 people outside)