Wheel structure
US7698780B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 8, 2007 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Jan 7, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60B33/0081
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A wheel includes a central holding member, a wheel member, a shell secured around the central holding member, a shaft partly received in the central holding member, a bearing around the shaft inside the central holding member, an upper cover tightly pressed against the bearing, a braking plate mechanism, and a pressing plate mechanism; the upper cover has a connecting extension section having first and second pivotal holes; the braking plate mechanism and the pressing plate mechanism are pivoted on the first and the second pivotal holes of the upper cover respectively; the pressing plate mechanism includes a big pressing plate, and a second pressing plate; when the big pressing plate is depressed, it will press the braking plate mechanism against the wheel member to stop the wheel member; the little pressing plate is used to move the big pressing plate away from the braking plate mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.