Sound systems for model railroad locomotives

Details Sound systems for model railroad locomotives Sound systems for model railroad locomotives

2005-03-08

2008-11-18

Le, Mark T (Department: 3617)

Railway rolling stock

Trains

Toy or model train

C105S238200, C446S410000

Reexamination Certificate

active

07451708

ABSTRACT:
On-board model railroad speaker enclosure designs are presented that allow maximum sized speakers, improve impedance matching of sound to the outside of the locomotive, and isolate back and front speaker waves while maintaining the standard horizontal drive-train in model train locomotives.

REFERENCES:
patent: 3600848 (1971-08-01), Marshall et al.
patent: 6578527 (2003-06-01), Mathers

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