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:
Jul. 21, 2026
Filed:
Nov. 18, 2025
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Mamon Horoub, Dhahran, SA;
Ammar Alzaydi, Dhahran, SA;
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Abstract
A noise cancelling device includes first and second expansion chambers, both cylindrical and equipped with double-wall inlet and outlet extension pipes. Each expansion chamber includes two elements: the first elements includes first and second cylindrical portions with differing diameters, and the second element includes a third cylindrical portion connecting to a connecting pipe. The second element is slidingly engaged with the first element to form a cylindrical body. The expansion chambers, the connecting pipe, and the extension pipes form a unitary body, and axially aligned along a longitudinal axis in the order of inlet extension pipe, first expansion chamber, connecting pipe, second expansion chamber, and outlet extension pipe. The device has a plane of symmetry perpendicular to the longitudinal axis at a center point of the connecting pipe.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile