Boots – shoes – and leggings
Patent
1989-12-27
1991-02-19
Lall, Parshotam S.
Boots, shoes, and leggings
36442605, 364436, 246 27, 246182AB, G06F 770, G06F 1548, G06G 770, G06G 776
Patent
active
049949691
ABSTRACT:
A system for automatic operation of rapid transit vehicles in a railway yard. The vehicles have a receiver system which is responsive to information communicated thereto and a control system responsive to the receiver system for controlling the continued operation of vehicle. The invention includes: a first entry/exit track circuit having at least one transmitting system for transmitting vehicle control information to vehicles within its section of the first entry/exit track circuit, and at least one switching system for reversing the first entry/exit track circuit; a second entry/exit track circuit having at least one transmitting system for transmitting vehicle control information to vehicles within its section of the second entry/exit track circuit, and at least one switching system for reversing the second entry/exit track circuit.
REFERENCES:
patent: 2948234 (1960-08-01), Hughson
patent: 4023753 (1977-05-01), Dobler
patent: 4166599 (1979-09-01), Auer, Jr. et al.
patent: 4244672 (1981-01-01), Lund
patent: 4641243 (1987-02-01), Hartkopf et al.
patent: 4763267 (1988-08-01), Knight et al.
patent: 4770122 (1988-09-01), Ichihashi et al.
General Signal Corporation
Lall Parshotam S.
Ohlandt John F.
Pipala Ed
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