Towing mechanism for a ski lift

Details Towing mechanism for a ski lift Towing mechanism for a ski lift

1976-08-10

1977-09-13

Spar, Robert J.

Railways

Traction

Cable

2421073, 254160, 267 64R, B61B 1100

Patent

active

040474879

ABSTRACT:
A towing mechanism for a ski lift includes a pay-out and take-up device for a tow rope having a towing bar attached to it. That device has a housing in which a luffing drum is non-displaceably mounted for rotation; a nut secured to this drum cooperates with a screw-spindle in the manner of a non-self-locking screw gear. A piston secured to one end of the screw-spindle operates in a cylinder secured to the housing and connected, via a check valve and an adjustable throttle valve arranged in parallel with each other, to a liquid containing chamber which within a reservoir is separated by a dilatable diaphragm from a chamber containing pressurized gas.

REFERENCES:
patent: 3041044 (1962-06-01), Nixon
patent: 3286311 (1966-11-01), Rhoads
patent: 3527452 (1970-09-01), Hausenblas et al.
patent: 3595528 (1971-07-01), Virkki
patent: 3907256 (1975-09-01), Kankkunen

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