Brake mechanism for a non-motorized wheeled vehicle
US9669659B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2015 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Mar 2, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/48
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Brake mechanisms for a wheel of non-motorized wheeled vehicle such as, e.g., a shopping cart, are described. In various embodiments, the brake mechanism can provide a variable amount of braking force or torque between zero and an amount sufficient to lock the wheel. In some embodiments, the brake mechanism includes a brake plate that is movable toward and away from a surface of the wheel hub along a direction parallel to the rotation axis of the wheel. The brake plate is configured not to rotate when the wheel and hub are rotating. Frictional engagement between the brake plate and the surface of the wheel hub provides the braking force. The brake plate and/or the surface of the wheel hub can include engagement features such as, e.g., protrusions and slots. In some embodiments, the brake mechanism fits entirely within the wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.