Spring motor

Details Spring motor Spring motor

1996-03-20

2000-11-21

Nguyen, John Q.

Winding, tensioning, or guiding

Reeling device

With spring motor

242375, 2423753, 1601681P, 160192, 185 39, 185 45, B65H 7548, E06B 930, E05F 1100

Patent

active

061490946

ABSTRACT:
A motor for controlling the elevating and lowering of a load comprises a storage drum, an output drum and a spring member operatively connected therebetween to provide a spring motor therewith, and a pair of cord drums aligned with and respectively adjacent the storage drum and the output drum. A gear train including an idler gear associated with the storage drum drivingly interengages the cord drums with the output drum, whereby the elevating and lowering of a load attached to the cords on the cord drums is balanced regardless of whether the elevating or lowering force is applied centrally between the points of attachment of the cords to the load.

REFERENCES:
patent: 3194343 (1965-07-01), Sindlinger
patent: 3216529 (1965-11-01), Lohr
patent: 4427163 (1984-01-01), Kondziola
patent: 5482100 (1996-01-01), Kuhar

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