Abstract: An unpowered respiratory protective headset for personal protective equipment and personal protective bodysuits with an unpowered respiratory protective headset, the unpowered respiratory protective headset having a respiratory mask having a flexible mask body having an interface section and defining a mask air inlet and a mask air outlet, an inhalation valve in the mask air inlet and an exhalation valve in the mask air outlet, and a hood having a hood body and a transparent face shield attached to the hood body. The hood has an air inlet and an air outlet and the air inlet, the mask air inlet, the mask air outlet and the air outlet are configured relative to each other to direct air flow across an inner surface of the transparent face shield to prevent or reduce fogging of the transparent face shield during inhalation and exhalation by a subject.
Type:
Grant
Filed:
May 7, 2020
Date of Patent:
July 11, 2023
Assignee:
The Johns Hopkins University
Inventors:
Youseph Yazdi, Matthew Petney, William A. L. Patterson, Laura Scavo, Patience Osei
Inventors:
Christopher Scott Skipper, Stephen Gray, Andrew Hung, Robert Thomas Burnham, Amal Shirley Amarasinghe, Ian James Matthews, Justin John Formica, Jessica Lea Dunn