Drive wheel unit
US4838170A · kind A · utility
19Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1988 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Oct 17, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61C13/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A drive wheel unit for moving equipment inside a pipe. A housing is connected to associated equipment by U-joints on either side of the housing. A drive wheel which extends above the top edge of the housing is driven by a drive motor and gear reducer mounted in the housing. A brake connected to the drive motor allows precise positioning of the equipment. A hydraulic cylinder and piston arrangement and wheel attached thereto are provided at each end of the housing and are used to lift the housing into a driving position where the drive wheel is in driving engagement with the top inside surface of the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.