Spectator hall at racetracks and the like with loudspeakers
US10184258B2 · kind B2 · utility
0Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 2017 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Jul 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R27/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A spectator hall at racetracks includes a roof with an inner ceiling decreasing in height from the racetrack, an opening directed to the racetrack, a back wall, a number of seats arranged with increasing height from the racetrack, at least one loud speaker at the ceiling near the opening, and an invisible front wall covering the opening. The invisible front wall is made from a stable material like glass or acrylic polymer, and is mounted stiffly e g by stiffening bars.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.