Pen instrument with controllable whistle
US7176367B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2004 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Aug 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K5/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A pen instrument is provided with a controllable whistle. The whistle includes a tubular body; a sleeve connected at a rear end to a first open end of the tubular body and at a front end to a rear end of the pen instrument to connect the whistle to the pen instrument; a whistle-producing reed structure fixedly provided in an inner space of the tubular body and including a reed; and a cut-off device provided at a predetermined position on the tubular body and operable by a user to allow or cut off flowing of air through the inner space of the tubular body. A balloon is connected to a second open end of the tubular body and inflated when the cut-off device is in a position allowing air to flow through the tubular body into the balloon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.