Pipe crawler apparatus
US6427602B1 · kind B1 · utility
36Cited by
14References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2001 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Jul 2, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/34
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipe crawler apparatus particularly useful for 3-inch and 4-inch diameter pipes is provided. The pipe crawler apparatus uses a gripping apparatus in which a free end of a piston rod is modified with a bearing retaining groove. Bearings, placed within the groove, are directed against a camming surface of three respective pivoting support members. The non-pivoting ends of the support members carry a foot-like gripping member that, upon pivoting of the support member, engages the interior wall of the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.