Device for measuring speed of tennis ball
US11266895B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2020 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Nov 13, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2220/89
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Disclosed is a device for measuring speed of a tennis ball, which includes: a housing, a power supply, a main control device, a sensor device, a transmission device, a clamping device and a limiting device. The clamping device is clamped at the serve opening of a tennis ball machine, which can detect the serve speed of a tennis ball accurately with simple operation. The transmission device is engaged with the second sensor device, and the housing is slidably connected with the second sensor device. The emitting ends of the second sensor device and the first sensor device are positioned in the same vertical plane. The limiting device is connected with the second sensor device to limit excessive operation of the transmission device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.