Force-sensing net
US9233287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2013 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Jan 10, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2220/80
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In exemplary implementations of this invention, a basketball net or flat net measures the translational kinetic energy of a ball that passes through an aperture in the net or impacts the net. The net includes one or more electrically conductive cords, which have a resistance that varies depending on the degree to which the cord is stretched. From sensor measurements, a processor determines: (a) instantaneous rate of change of resistance, and (b) duration of a time period that begins when resistance exceeds a baseline (with hysteresis). In the case of a basketball net, a processor may calculate the translational kinetic energy of the ball as equal to a sum of two terms. The first term is inversely proportional to the square of the duration; the second is proportional to the square of the integral of the instantaneous rate of change of resistance over the time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.