Phase sensitive alternating current track circuit
United States Patent 2884516
US Patent References:
Static polarization of alternating current apparatus
- - 2058697
Power regulation
- - 2181321
Railway signaling apparatus
- - 2390010
Railway signaling system
- - 2585505
Supplementary apparatus for railway signaling systems
- - 2666131
Static polarization of alternating current apparatus
- - 2058697
Power regulation
- - 2181321
Railway signaling apparatus
- - 2390010
Railway signaling system
- - 2585505
Supplementary apparatus for railway signaling systems
- - 2666131
Inventors:
Staples, Crawford E.
Publication Date:
04/28/1959
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Export Citation:
Assignee:
WESTINGHOUSE AIR BRAKE CO
Primary Class:
Other Classes:
361/185, 307/25, 307/72, 340/825.770, 307/77
International Classes:
B61L23/16; B61L23/00