Manhole cover moving apparatus and method
US5674045A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1994 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Oct 11, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F19/005
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A lifting and moving portable apparatus and method that includes a beam extending across the manhole cover supported at one end by a pivot member resting on the surface outside the manhole periphery and supported at the other end by a pair of wheels riding on the surface outside the manhole periphery. A lifting device is mounted on the center region of the beam for securing the cover and lifting the cover above the cover rim or surrounding surface. Once lifted, the operator can roll the beam and cover assembly through an arc about the pivot axis to expose the entire manhole. Means are provided to stabilize the cover in the horizontal and angular position relative to the beam so that the cover assumes the same angular position relative to the manhole when returned to the closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.