Drive device for an industrial truck
US7137470B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 2004 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Jul 18, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2220/46
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A drive device for an industrial truck includes a pivoted bolster rotatable around a vertical axis (V), two drive wheels (4, 5) mounted on the pivoted bolster and a device located axially between the drive wheels (4, 5) to generate a differential action between the drive wheels (4, 5). A vertically oriented motor (6) can be provided above the drive wheels (4, 5) and a mechanical differential (7) can be coupled with the motor (6) and the drive wheels (4, 5). Alternatively, each drive wheel (4 or 5) can be coupled with its own motor (8 or 9). Alternatively still, a double rotor electric motor (10) having two rotors (10c, 10d) and a common stator (10b) can be located between the drive wheels (4 or 5) and coupled with a neighboring drive wheel (4 or 5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.