Railways – Traction – Cable
Patent
1987-03-10
1988-11-15
Walton, George L.
Railways
Traction
Cable
1051492, B61B 1100
Patent
active
047840650
ABSTRACT:
The opening and closing control system of a protective hood of a chair of a chair-lift comprises spring or gravity energy storage devices, to move the hood independently from the speed of the chair. The energy storage device is reloaded when the chair passes through the terminal and catches lock the hood in different positions. These catches are automatically controlled when the chair passes predetermined locations to achieve automatic control of opening and closing of the hood.
REFERENCES:
patent: 2662587 (1953-12-01), McIlvaine
patent: 3008761 (1961-11-01), McIlvaine
patent: 3347173 (1967-10-01), Carlevaro
patent: 3461813 (1969-08-01), McIlvaine
patent: 3556014 (1971-01-01), Rudkin
patent: 3596612 (1971-08-01), Sowder
patent: 3747974 (1973-07-01), Tauzin
patent: 4149471 (1979-04-01), Tauzin et al.
Pomagalski S.A.
Walton George L.
LandOfFree
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