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:
May. 22, 1979
Filed:
Sep. 06, 1977
Applicant:
Inventor:
Barry L Hudson, Lower Templestowe, AU;
Assignee:
General Electric Company, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
A47J / ; G08B / ;
U.S. Cl.
CPC ...
126388 ;
Abstract
A variable intensity whistle is formed by a cylindrical chamber having apertures in opposite ends. The centers of the apertures are off set with respect to the cylinder axis and the chamber is formed in two parts which are rotatable relative to each other to either align the apertures and displace them by predetermined amounts.