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US7920062B1 · kind B1 · utility
15Cited by
25References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2007 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Dec 4, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B5/0096
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention teaches and discloses method and apparatus for alerting a grocery store check out cashier of merchandise placed on the bottom tray of a typical grocery shopping cart. A passive RFID transponder is incorporated into the structure of the cart which when interrogated by an associated reader, located at the cashier's check out station, responds with a signal verifying the presence, or absence, of an unseen item upon the carts bottom tray.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.