Invention Grant
- Patent Title: Signaling and remote control train operation
- Patent Title (中): 信令和遥控列车运行
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Application No.: US13800232Application Date: 2013-03-13
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Publication No.: US08701562B2Publication Date: 2014-04-22
- Inventor: Frederick E. Severson
- Applicant: QS Industries, Inc.
- Applicant Address: US OR Beaverton
- Assignee: QS Industries, Inc.
- Current Assignee: QS Industries, Inc.
- Current Assignee Address: US OR Beaverton
- Agency: Stolowitz Ford Cowger LLP
- Main IPC: A63H19/14
- IPC: A63H19/14
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.
Public/Granted literature
- US20130203318A1 SIGNALING AND REMOTE CONTROL TRAIN OPERATION Public/Granted day:2013-08-08
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