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. 03, 2018
Filed:
Jun. 29, 2011
Fouad Halwani, Kirkland, CA;
Nathan Ayoubi, Vancouver, CA;
Jose Ganseman, Denderleeuw, BE;
Judy Findlay, Vancouver, CA;
Thomas Lloyd Bellaire, Burnaby, CA;
Ian Brodkin, Vancouver, CA;
Arthur Willms, Surrey, CA;
Victor Dosil, Delta, CA;
Awni Ayoubi, Surrey, CA;
Fouad Halwani, Kirkland, CA;
Nathan Ayoubi, Vancouver, CA;
Jose Ganseman, Denderleeuw, BE;
Judy Findlay, Vancouver, CA;
Thomas Lloyd Bellaire, Burnaby, CA;
Ian Brodkin, Vancouver, CA;
Arthur Willms, Surrey, CA;
Victor Dosil, Delta, CA;
Awni Ayoubi, Surrey, CA;
Abstract
A compound membrane breathing tube for use in spirometric applications is provided. The compound membrane comprises a first sheet and a second sheet of flexible sheeting connected together along the periphery thereof, and each of the sheets has an opening cut therethrough to create a flap. The flap of the first sheet overlaps the flap of the second sheet so as to present a higher relative resistance to airflow through the breathing tube at lower airflows.