Whistle
US5086726A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 24, 1990 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | Aug 24, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K5/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A referees sports whistle of mandolin shape is provided which has three rectangular whistle chamber elements of the same order of length contained within the mandolin shape of the whistle and arranged side-by-side in a common plane. An exhaust port is provided on the top surface of the whistle to exhaust air, blown into the whistle chamber elements, entirely through the top of the whistle. The whistle is manufactured from two separately moulded parts comprising a first top cover portion including the exhaust port and a second part comprising a main body part including a bulbous portion to be gripped at the sides thereof by the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.