The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2013
Filed:
Oct. 19, 2007
Hideomi Shishido, Hiroshima, JP;
Hideomi Shishido, Hiroshima, JP;
Other;
Abstract
There is provided a whistle which suppresses any delay of sound to a listener and any attenuation of a sound volume, can transmit sound waves directly, can be blown with various tones, and has a large sound volume. Two kinds of whistles are stacked up and down and integrated together as a single whistle, an orifice is formed opposite to an air feeding opening to transmit sound waves directly to a listener. Moreover, an amount of air flowing into each air feeding tube of the whistle is controlled depending on an angle of putting a mouthpiece in a mouth to select a tone. A tone selecting member or an air amount adjusting flap is provided, and tone can be selected by mechanically blocking off each air feeding tube. Furthermore, an air amount adjusting flap which changes an air-feeding-path cross-sectional area of the air feeding opening, the air feeding tube, or the orifice is provided, and a sound volume can be changed by adjusting an amount of passing air.