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:
Aug. 25, 2020
Filed:
Apr. 09, 2019
Gramercy Products, Inc., Secaucus, NJ (US);
William Steinkraus, Fort Lee, NJ (US);
Gramercy Products, Inc., Secaucus, NJ (US);
Abstract
A sound producing device includes: a housing and carriage. The housing has a cylindrical interior surface with a helical tracking thread protruding therefrom. The cylindrical carriage has an opening in its exterior surface defining a helical shaped recess that receives and tracks along the helical housing thread. A squeaker may be secured within the carriage, so when air flows in a first direction through the housing, it emits sound, and the squeaker carriage is driven to track along the helical thread, causing the carriage to rotate and also translate in the first direction, according to a pitch of the helical thread. A frequency of the sound produced by the squeaker changes according to the carriage's translational movement, as it changes the dimensions of the sound-producing chamber. When air subsequently flows through the housing in the opposite direction, the carriage's motion is reversed, correspondingly changing the frequency of sound produced.