Self-contained device for self-service delivery of electrical energy
US5451755A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1993 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Sep 28, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S50/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A self-contained device for self-service delivery of electrical energy, comprising a plurality of terminals, each capable of being connected to an electrical appliance, and a central management unit, operable independently of the terminals. The central management unit serves to: (1) manage distribution of electricity from an electrical supply grid to each of the terminals, (2) manage interaction between a prepayment instrument and users of the terminals, and (3) manage connection of the terminals to the electrical supply grid for transmission of electricity therebetween for either a period of time or a quality of electricity, as determined in response to a signal from the prepayment instrument indicating prepayment by a user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.