Boots – shoes – and leggings
Patent
1993-12-10
1995-10-17
Teska, Kevin J.
Boots, shoes, and leggings
364436, 246 4, 246 34CT, 246167R, 246122R, B61L 118, B61L 2320, B61L 2918
Patent
active
054596637
ABSTRACT:
An apparatus and method for supplying cab signal to a rail vehicle on a section of track composed of sequentially adjacent railway track circuit blocks. Respective receivers of each track circuit block are monitored for the presence of a vehicle within that block. The cab signal apparatus is controlled to transmit a signal to a block when the output from the respective receiver in that block indicates a different condition from the adjacent receiver of an adjacent block. Output voltages from adjacent receivers are compared to enable transmission of a cab signal. Comparison of adjacent receiver outputs is accomplished through use of a diode bridge.
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Ingersoll Buchanan
Nguyen Tan
Teska Kevin J.
Union Switch & Signal Inc.
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