Electrical system for a computer cart
US8916991B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2011 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Apr 8, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/702
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electrical system for a computer cart enables power to be diverted between electrical channels within the cart using an intelligent round robin charging scheme. All power may be diverted to individual channels one at a time for short charging intervals. When a selected primary channel does not require all available power within the cart, excess power is provided to a secondary channel. All three channels may likewise share power if excess is available. Relays are used to allow power to be controlled to the individual channels. Current sensors on each channel sense an amount of current used by the channel. The output of the current sensor is digitized and integrated to determine how much current is being used by the channel. The current is used by the control to detect uncharged laptops and to selectively divert power between channels to optimize use of power within the computer cart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.