Homeowner key for an electronic real estate lockbox system
US5815557A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7446
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A secure entry system makes use of radio transmissions to communicate with locks, keys, and related components throughout the system. The radio transmissions can be made using a paging system, a cellular telephone system, or any other RF carrier. Some embodiments employ a cellular telephone in lieu of an electronic key. Others integrate a paging receiver within an electronic key to provide a unit with dual functionality. The system is illustrated with reference to exemplary applications in the industrial site security, real estate lockbox, and transportation fields. A homeowner key allows the homeowner greater oversight and involvement. The key includes a privacy feature, enabling the homeowner to disable the lockbox for a predetermined period if privacy is desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.