Elevator – industrial lift truck – or stationary lift for vehicle – With closure means for shaft opening through landing
Patent
1994-08-17
1996-07-16
Noland, Kenneth
Elevator, industrial lift truck, or stationary lift for vehicle
With closure means for shaft opening through landing
312247, B66B 1324
Patent
active
055358527
ABSTRACT:
A lift apparatus is provided for raising or lowering objects through an opening in a ceiling which has associated ceiling supports, such as ceiling joists. The lift apparatus includes a frame, mounted to and supported by the ceiling supports, having first and second frame members, and a third frame member which extends between and is fixedly connected to the first and second frame members. A receptacle, for holding the objects and sized to fit through the ceiling opening, is fixedly connected to a movable guide mechanism slidably cooperating with at least one of the first or second frame members to allow substantially vertical movement of the receptacle between a retracted position, substantially above ceiling level, and an extended position substantially below ceiling level. At least one pulley and a device, such as a motor, for rotating the pulley(s) are fixedly mounted to the third frame member and operate at least one cable connected between the pulley(s) and receptacle to raise or lower the receptacle through the ceiling opening between the retracted and extended positions. The lift apparatus is particularly useful for raising objects to or lowering objects from a home attic.
REFERENCES:
patent: 2086002 (1937-07-01), Shepard
patent: 2499791 (1950-03-01), Spencer
patent: 3608674 (1971-09-01), Phillips
patent: 3627397 (1971-12-01), Rocninsky
patent: 3743287 (1973-07-01), Liermann
patent: 4060292 (1977-11-01), Medina
patent: 4412601 (1983-11-01), Cooper
patent: 5020641 (1991-06-01), Olsen et al.
patent: 5203619 (1993-04-01), Welsch et al.
Bishop David J.
Sherwin Carroll E.
Noland Kenneth
Sharp William R.
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