Toroidal winch

Details Toroidal winch Toroidal winch

1989-04-24

1990-03-27

Jillions, John M.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 54A, 242117, 52121, 254374, B65H 7518

Patent

active

049113739

ABSTRACT:
A winch having a torodially-shaped drum with an axis of rotation and at least one cable wound on the drum having a cable length extending from the drum parallel to and substantially equally spaced from said axis at all times during rotation of the winch. The drum has negatively-curved and positively-curved surfaces joined at a common edge, the cable being wound on the negatively-curved surface and directed therefrom over the positively-curved surface in a direction parallel to the drum axis. This drum is used advantageously with the mast system described in application Ser. No. 246,112.

REFERENCES:
patent: 3202372 (1965-08-01), Meline et al.
patent: 3728906 (1973-04-01), Takaki et al.
patent: 4436250 (1984-03-01), Becker
patent: 4520966 (1985-06-01), Bloch et al.
"Custom Torque Motors from Off--the--Shelf Components" by Bjorn M. Karlstrom, Machine Design, Jun. 26, 1986, pp. 71-74.

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