| Patent Number |
Title Of Patent |
Date Issued |
| 6565046 |
Method of detecting obstacles on railroad lines |
May 20, 2003 |
| A method and system of detecting obstacles on railroad lines. Sensors for observing the railroad line are arranged along the railroad line, and automatic evaluation takes place. One advantage of the invention is that the railroad lines are divided into given, known line sections, each of |
| 5629509 |
Axle counter with variable threshold setting |
May 13, 1997 |
| An axle counter which compares axle passage pulses generated in an electromagnetic rail contact with a predetermined threshold value and, when this threshold value is exceeded, feeds an axle counter pulse to presence-of-trains indicating equipment, is equipped with overwritable memor |
| 4787581 |
Train detection system operating in accordance with the axle-counting principle |
November 29, 1988 |
| A train detection system is disclosed which works on the axle-counting principle and in which preprocessing units each containing a two-microprocessor system are associated with the individual detection points. Along the track, a major number of preprocessing units are connected with |
| 4763267 |
System for indicating track sections in an interlocking area as occupied or unoccupied |
August 9, 1988 |
| A system for indicating occupancy of track sections in an interlocking area is disclosed comprising a multicomputer system which is assigned to several track circuits and processes the "unoccupied" or "occupied" indications of these track circuits. The multicomputer system, which is of |
| 4616312 |
2-out-of-3 Selecting facility in a 3-computer system |
October 7, 1986 |
| A fail-safe 2-out-of-3 selecting facility for a 3-computer system is disclosed which is especially suitable for use together with microprocessors having a large number of outputs. The computers (R1 . . . R3) of the 3-computer system handle the same information in parallel but asynchr |
| 4550444 |
Facility for intermittent transmission of information between guideway wayside equipment and veh |
October 29, 1985 |
| A facility is disclosed comprising an on-board interrogator and a passive trackside transponder which transmits data messages to the interrogator on a single FM channel using, for instance, frequency shift techniques and draws the necessary transmitting energy from an alternating magneti |
| 4469298 |
Axle sensor |
September 4, 1984 |
| A sensor arrangement is disclosed for detecting the presence of an axle of a rail vehicle in a short length of a track. The arrangement includes a bridge coupled to and including resistances of the rail upon which the vehicle travels. This bridge is unbalanced by wheels of an axle shunti |
