Navigation systems and methods for wheeled objects
US8751148B2 · kind B2 · utility
22Cited by
127References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2011 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | May 10, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A navigation system uses a dead reckoning method to estimate an object's present position relative to one or more prior positions. In some embodiments, the dead reckoning method determines a change in position from the object's heading and speed during an elapsed time interval. In embodiments suitable for use with wheeled objects, the dead reckoning method determines the change in position by measuring the heading and the amount of wheel rotation. Some or all of the components of the navigation system may be disposed within a wheel, such as a wheel of a shopping cart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.