Diaphragm game call with tone modifying slits
US4927399A · kind A · utility
6Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1989 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Jan 24, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01M31/004
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a dual diaphragm-type game caller of a size and shape suitable for inserting into a user's mouth for support against the roof of the mouth so that free edges of two diaphragms retained together as a unit in a spaced-apart relationship can concurrently vibrate when impinged by pulmonary air exhausted by the user. The invention employs two diaphragms having a selected pattern of slits which allow the caller to produce a flutter or raspy sound effect which is sometimes desired by the wild turkey hunter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.