Vehicle-detecting unit for use with electronic parking meter
US6229455A · kind A · utility
127Cited by
33References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1999 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Mar 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F17/246
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A vehicle detector unit and detection method for use with an electronic parking meter for providing the electronic parking meter with the ability to reliably detect the presence or absence of a vehicle in any existing corresponding parking space, independent of the surrounding environment, while using a minimum of power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.