Portable manhole cover remover
US6945742B2 · kind B2 · utility
10Cited by
19References
15Claims
0Family size
Inventor
Key dates
| Filing date | Jun 20, 2002 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Jun 20, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B2203/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A manhole cover remover, including an attachment; a support; a pivot arm having a proximal end hinged to the support and the pivot arm having a distal end; a connector joining the attachment to the distal end of the pivot arm; a winch joined to the distal end of the pivot arm; and a power source, the power source in operable communication with the winch and method of use including the steps of rotating a pivot arm down toward a manhole over; connecting the pivot arm to the manhole cover; and winching the pivot arm upward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.