Invention Grant
US08152111B1 System and apparatus for indicating the position and condition of a switch point in a railroad switch
有权
用于指示铁路开关中的切换点的位置和状态的系统和装置
- Patent Title: System and apparatus for indicating the position and condition of a switch point in a railroad switch
- Patent Title (中): 用于指示铁路开关中的切换点的位置和状态的系统和装置
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Application No.: US12927954Application Date: 2010-11-30
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Publication No.: US08152111B1Publication Date: 2012-04-10
- Inventor: Albert Edwin Bryan
- Applicant: Albert Edwin Bryan
- Agent Robert C. Brown
- Main IPC: B61L5/00
- IPC: B61L5/00

Abstract:
A railroad switch point indicator comprising a mounting plate mountable to a railroad switch point, a tubular housing mounted to the mounting plate, a piston slidably disposed in the housing and extendable to variably engage an associated railroad rail, a bias spring operatively connected to the piston for biasing the piston in an axial direction with respect to the housing and the railroad switch point, and a signal mechanism operatively connected to the piston for indicating the positional status of the switch point via an attitude of a signal flag. When the switch point is engaged with a rail, the flag is in a first attitude. When the switch point is disengaged from the rail, the flag is in a second attitude. When the switch point is positioned incorrectly, i.e., damaged, the flag may be in a third attitude intermediate between the first and second attitudes, indicating alarm.
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