TRAIN RESONANT CAR-BODY ROCKING DETECTOR SYSTEM

A significant number of freight cars have a relatively high center of gravity and a truck center distance close to the 39-foot standard rail joint spacing. When operated near the resulting resonant speed of 18 to 20 mph on a curved track, such cars may derail. A hydraulic sensor is described in the patent application which detects and registers the resonant rocking motion of a train car and activates the brake system to stop the train prior to possible derailment due to wheel rock-off from the track.

• Supplemental Notes:
  • Government-owned invention available for licensing. Copy of application available NTIS.
• Corporate Authors:

  Department of the Navy

  Constitution Avenue and 18th Street, NW
  Washington, DC  United States 
• Authors:
  • Swaim, F H
• Publication Date: 1974-7-25

Media Info

• Pagination: 15 p.

Subject/Index Terms

• TRT Terms: Actuators; Braking; Deceleration; Derailments; Detectors; Hydraulic equipment; Patents; Piezoelectric materials; Prevention; Railroad cars; Rocking; Rolling; Sensors; Train track dynamics
• Old TRIS Terms: Rock and roll
• Subject Areas: Railroads; Security and Emergencies;

Filing Info

• Accession Number: 00093773
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: PAT-APPL-491 983 Patent
• Files: TRIS
• Created Date: Feb 4 1976 12:00AM