Decoder for a stationary switch machine

Details Decoder for a stationary switch machine Decoder for a stationary switch machine

2006-07-19

2010-10-12

Le, Mark T (Department: 3617)

Railway switches and signals

Electric actuation

Switch or signal actuated controllers

C246S131000, C246S133000, C246S143000, C246S146000, C246S162000, C246S12200A, C246S220000, C246S219000, C246S134000, C246S00100C, C246S00100C

Reexamination Certificate

active

07810761

ABSTRACT:
A method for controlling a model railroad stationary switch machine comprising sensing whether a train occupies a main track section near a track switch that connects between said main track section and at least two diverging track sections. An automatic switch control function for the track switch is inhibited in response to sensing that a train occupies the main track section near the track switch when a train is determined to be approaching the track switch on at least one of the diverging track sections. In addition, a method is provided for controlling a model railroad track switch comprising changing a position of the track switch, and automatically returning the track switch to a home position after expiration of a time interval following the changing of the track switch position.

REFERENCES:
patent: 4695016 (1987-09-01), Worack
patent: 6308920 (2001-10-01), Zander
patent: 6530329 (2003-03-01), Katzer
patent: 7350754 (2008-04-01), Pierson
Digitrax manual and instruction: DS54 Quad Stationary Decoder for Digital Command Control with Programmable LocoNet Inputs & Outputs, pp. 1-65, Digitrax, Inc.,last updated Jul. 2003.
The Digitrax, Big Book of DCC, sections 5.2-5.4, pp. 62-66, Digitrax, Inc., Copyright 1999.
“Switch-It Accessory Decoder”, NCE Corportion, 4 pages, Revised Mar. 2003.

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