Stephen L Kilgore

US Patent:

7577502, Aug 18, 2009

Filed:

Jul 8, 2004

Appl. No.:

10/887293

Inventors:

William L. Henry - Lenexa KS, US
Stephen V. Kilgore - Lenexa KS, US

Assignee:

J & A Industries, Inc. - Kansas City KS

International Classification:

G06F 7/00
B61L 1/00
E01B 7/00

US Classification:

701 19, 701 1, 701 20, 701207, 340438, 340439, 246 26, 246218, 246219, 246220, 246239, 246314, 246401, 246415 R, 246420

Abstract:

A vital proximity detection mechanism and method for reliably determining and communicating the position of a railroad switch point relative to a normal fixed track and a reverse fixed track, wherein the mechanism includes substantial component redundancy and fault-checking features and otherwise meets promulgated safety standards for vital componentry. The mechanism includes an RF transmitter and remote status indicator unit to allow for remote adjustments of proximity sensors while monitoring the effects of such adjustments.