Roller of variable outer diameter type, and carrying apparatus and method using the same
US5407054A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Nov 12, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G47/54
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A roller of variable outer diameter type has a holding member having a plurality of through holes radially along a side surface and provided with a hollow portion communicating with these through holes; a sealing member having diaphragms arranged so as to correspond to the respective through holes; and sliders respectively fitted slidably in the through holes and forming an outer peripheral surface of the roller, the sealing member causing the sliders to urge and displace the sliders via the diaphragms by a fluid supplied thereinto in such a direction that the outer diameter of the roller is enlarged. This roller of variable outer diameter type is mounted on a rotary shaft portion in an apparatus for transferring articles such as a transporting conveyer or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.