Railways – Slotted conduit
Patent
1975-05-06
1978-01-10
Blix, Trygve M.
Railways
Slotted conduit
104147R, 104161, 191 25, 191 31, B60M 134
Patent
active
040672573
ABSTRACT:
An electrical power supply conduit comprises an elongate electrical conductor located in the conduit, the latter preferably being pressurized with clean air or an inert gas and having an entry slot extending longitudinally, through which slot, in use, an electrical pick up e.g. a pantograph of an electrical machine may enter the conduit to gain access to the electrical conductor, with a flexible mechanical seal extending longitudinally of the conduit and normally closing the slot.
REFERENCES:
patent: 405628 (1889-06-01), Van Depoele
patent: 560678 (1896-05-01), Brandenburg
patent: 1048668 (1912-12-01), Evans
patent: 3455432 (1969-07-01), Dawson
patent: 3458235 (1969-07-01), Romer et al.
patent: 3472556 (1969-10-01), Bolton
patent: 3578810 (1971-05-01), Newstead
patent: 3722424 (1973-03-01), Van Veldhulzen
patent: 3749026 (1973-07-01), Carrasse
patent: 3768418 (1973-10-01), Yoshida
patent: 3848712 (1974-11-01), Flodell
Blix Trygve M.
Pitcraft Limited
Reese Randolph A.
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