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:
Jan. 28, 2003
Filed:
Nov. 08, 2000
John I. Izuchukwu, Wildwood, MO (US);
Stan A. Sanders, Chesterfield, MO (US);
Mallinckrodt Inc., St. Louis, MO (US);
Abstract
An emergency breathing apparatus includes a hood, a gas storage pack, and a supply conduit connecting the hood and the gas storage pack. The gas storage pack includes a pressure vessel formed from a plurality of hollow chambers, which have either an ellipsoidal or spherical shape, interconnected by a plurality of relatively narrow conduit sections disposed between consecutive ones of the chambers. The pressure vessel includes a reinforcing filament wrapped around the interconnected chambers and interconnecting conduit sections to limit radial expansion of the chambers and conduit sections when filled with a fluid under pressure. The gas storage pack further includes a fluid transfer control system attached to the pressure vessel for controlling fluid flow into and out of the pressure vessel and a housing for containing the pressure vessel. During use, the hood is worn over the head of a person and a breathable gas, supplied by the supply conduit from the pressure vessel to the hood, creates a positive pressure within the hood relative to ambient pressure, thereby permitting the person wearing the hood to breath and protecting the person from noxious gases outside the hood.