Digital vertical level indicator for improving the aim of projectile launching devices
US7296358B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jan 21, 2005 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Jan 21, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41G1/48
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An electronic vertical angle sensing and indicating device for use on aiming systems is provided for bow sights and for other aiming sights for projectile launchers. Improved vertical level measurement and display minimizes the left-right drift of a projectile by sensing and indicating to the user when the projectile launcher is tilted slightly prior to release of the projectile. The vertical level indicator is easily viewed within the field of direct or near direct vision and focus of the eye in a reduced profile that does not distract the operator from the task of accurately aiming the projectile is provided. One embodiment of the present invention positions the signal indicators in the far-field of view of the eye, so that all of the signal indicators, the sighting means and the distant target being viewed are simultaneously in focus or near-focus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.