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. 25, 2006
Filed:
Jan. 23, 2003
Charles W. Kerechanin, Ii, Burtonsville, MD (US);
Dexter G. Smith, Columbia, MD (US);
Jennifer A. Nix, Ellicott City, MD (US);
Protagoras N. Cutchis, Highland, MD (US);
Charles W. Kerechanin, II, Burtonsville, MD (US);
Dexter G. Smith, Columbia, MD (US);
Jennifer A. Nix, Ellicott City, MD (US);
Protagoras N. Cutchis, Highland, MD (US);
The Johns Hopkins University, Baltimore, MD (US);
Abstract
A portable ventilator for providing an air-recipient with compulsory respiration is provided with an outlet manifold and a single-expansion-chamber muffler configured so that airflow through an inhale outlet port of the muffler is pulse-free and a transmission loss, defined as the ratio of sound power generated by the at least one compressor and incident on the muffler to the sound power transmitted by the muffler, is sufficient to deaden the sound power of the compressor.