Roll dolly
US5253972A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1992 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Jan 30, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S414/124
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A specially constructed pallet jack is used for transporting a heavy roll of paper having a central hollow core. The pallet jack includes a frame with elongated arms having first and second ends, with a first set of wheels mounted at the second end of the arms, and a second set of wheels mounted near the first end of the arms. A jack is provided for jacking up the first ends of the arms so that they are spaced from the wheels. Between the arms is a cradle having first and second ends with three obtuse angle-connected planar surfaces extending between the first and second ends. The first end of the cradle is pivotally mounted to the first ends of the arms, and the cradle is biased to a roll-receiving position by a gas spring. When a roll is rolled into the cradle, it pivots, dampened by shock absorbers to a roll-capture position in which the roll cannot spontaneously roll out of the cradle. A strap passes from the cradle through the core of the roll to positively hold it in place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.