Lot signalling device
US6426698B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | May 19, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/0227
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An apparatus related to a lot signalling device used to find misplaced lots. A remote control signalling device comprises a receiver section (5) for receiving an RF-command including a unique address of at least one of said plurality of remote control signalling devices (3) from a central control unit (1), an address memory (6) for storing the address of said remote control signalling device, an output section (7) for signalling an alarm upon receiving the RF-command, if said address included in the RF-command matches the stored address in said address memory (6). A method for processing items at different process stages comprises the steps of: transmitting RF-commands including a unique address of at least one of said plurality of remote control signalling devices by a central control unit (1), signalling an alarm by said remote control signalling device (3) upon reception of an RF-command from said central control unit (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.