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US 5,435,209 AGranted
Drive unit for a hoisting apparatus, in particular for a passenger or freight elevator
AssigneeWittur Aufzugteile GmbH & Co.
InventorHorst Wittur
Life of this patent
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Abstract
A drive unit for a hoisting apparatus and, in particular, a passenger or freight elevator, has a supporting structure, a drive motor, a brake apparatus and a planet gear. The planet gear is driven by the drive motor and has a housing jacket which forms the drive stage and bears a pulley on its periphery. The planet gear is supported by the supporting structure on both sides of the pulley. As opposed to a one-sided support, this results in a favorable load distribution. The brake apparatus is provided on the driven portion of the planet gear.
Claims18
A drive unit for a hoisting apparatus comprising:
- a supporting structure transferring forces produced during hoisting to a building,
- a drive motor,
- a brake apparatus,
- a planet gear driven by the drive motor, said planet gear including a housing jacket forming a drive stage,
- a pulley borne on a periphery of said housing jacket, the planet gear being supported on the supporting structure at both sides of the pulley, the housing jacket of the planet gear forming a braked portion of the brake apparatus.
2 more elements
Dependencies are inferred from the claim text.