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:
Apr. 30, 1996
Filed:
Apr. 29, 1994
Applicant:
Inventor:
Michael T Zuroski, Sun Prairie, WI (US);
Assignee:
Digisonix, Inc., Middleton, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ; H03B / ;
U.S. Cl.
CPC ...
381 71 ; 381 94 ; 415119 ; 181224 ;
Abstract
An integral active and passive silencer particularly useful for industrial applications. The integral unit is easy to install, disassemble and service. It provides a housing that can be separated into portions, with each portion containing an active or passive silencer. The invention also provides an active silencer having a ported tube that is in acoustic communication with one or more loudspeakers through a tuning chamber. The ported tube can be removable.