Patent ID: 7789375

Claim:
A portable winch assembly, the winch assembly being actuable by an auxiliary handheld torquing device, the winch assembly comprising: a planetary reduction gearbox, the gearbox comprising a primary sun gear, a secondary sun gear, a first plurality of planet gears, a second plurality of planet gears, and a ring gear; the primary sun gear including a drive head and a drive shaft, the drive head being configured for engagement with the auxiliary handheld torquing device; the first plurality of planet gears being carried by a first planet carrier, the first planet carrier including an aperture therethrough such that the drive shaft is positioned through the aperture and the first plurality of planet gears are operatively engaged with the primary sun gear; the secondary sun gear being positioned within the aperture in the first planet carrier, the secondary sun gear having an opening therethrough, the drive shaft being positioned through the opening; the second plurality of planet gears being carried by a second planet carrier, the second planet carrier including an aperture therethrough such that the drive shaft is positioned through the aperture and the second plurality of planet gears are operatively engaged with the secondary sun gear; and the ring gear encircling the primary sun gear, the first plurality of planet gears, the secondary sun gear, and the second plurality of planet gears, the ring gear being operatively engaged with the first plurality of planet gears and the second plurality of planet gears.