Miniature sports radar speed measuring device
US6666089B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2001 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Feb 4, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/88
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A sensor is provided for measuring the speed of a moving sports object, particularly an object being shot or launched, for example, from a gun, bow or other implement, such as a bullet or paint ball being shot from a gun or an arrow being shot from a bow. The sensor is operable over a short range and is preferably mounted in close proximity to the path of the moving object. The sensor of the preferred embodiment utilizes CW Doppler radar in the form of a microwave radio frequency transmitter and receiver that has a single-transistor integrated antenna/oscillator. A simple, low cost unit having a low radiation and low energy consumption transmitter, receiver and signal processor, is provided. In use, the unit is situated so as to place a transmit/receive antenna close to or in the line of motion of the object. Such an antenna, so positioned, may be separated from the unit and connected through a transmission line. The remote display/annunciator can also or in the alternative be separated and located remote from the transmitter/receiver and connected by a cable or a wireless link. Paint ball gun marker velocity or bullet velocity can be measured or the gun calibrated with a sensor an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.