Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes linking support cable in drive-means
Patent
1994-05-18
1995-07-18
Terrell, William E.
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes linking support cable in drive-means
187271, B66B 1108
Patent
active
054332940
ABSTRACT:
A geared traction elevator includes a worm shaft, supported by a pair of tapered roller bearings in a gear box housing, one end of which projects out of an opening in the gear box housing and is coupled to the motor. The motor end bearing assembly is secured against axial movement by a retainer ring, which is secured in a groove in the gear box housing, and the motor end of the worm shaft is sealed by a dynamic seal, also secured in the housing. A cap bears against the bearings at the other end of the shaft, to pre-load the bearings to a predetermine level. In this manner, the dynamic seal may be replaced without affecting the pre-load setting. Preferably, the bearings are disposed in openings at opposite ends of the gear box housing which are large enough to allow the worm shaft to be removed through either end. The arrangement simplifies the manufacture of the gear box, and reduces the time and parts necessary to replace the dynamic seal.
REFERENCES:
patent: 1011423 (1911-12-01), Gale
patent: 1125133 (1915-01-01), Larsson
patent: 5201821 (1993-04-01), Ericson et al.
patent: 5226508 (1993-07-01), Ericson et al.
Delaware Capital Formation Inc.
Reichard Dean A.
Terrell William E.
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