E.d. Bullard Company

Paul A Kinzer

William Chad Wedding

Marcus Landon Borders

Jonathan Scott Fisher

Travis J Plumlee

A powered air-purifying respirator (PAPR) carriage and assembly includes: a blower assembly configured to draw in and purify ambient air; a power source operably connected to the blower assembly; and a carriage, which is configured to be worn by a user and to receive and carry the blower assembly and the power source. The carriage includes a main body that is configured to be worn on the shoulders of the user and includes a first cavity for receiving the power source and a second cavity for receiving the blower assembly. The first cavity and the second cavity are defined by portions of the main body positioned on opposing anterior and posterior sides of the user when worn. When the PAPR carriage and assembly is in use, the carriage thus causes the weight of the blower assembly and the power source to be distributed across the upper body of the user in a counterbalanced manner.

Powered air-purifying respirator carriage and assembly

Powered air-purifying respirator carriage assembly

A blower assembly for a powered air-purifying respirator (PAPR) assembly includes: a lower housing; an upper housing connected to the lower housing, such that the upper housing and the lower housing collectively define a first interior cavity; a filter configured to filter ambient air drawn into the blower assembly; and a fan. The upper housing and the filter define a pathway for a flow of air into the first interior cavity. The fan is positioned in the first interior cavity such that, when the fan is activated, ambient air is drawn into the blower assembly and travels along the pathway into the first interior cavity for subsequent delivery out of the blower assembly. The lower housing defines an outlet port for directing breathable air out of the blower assembly for delivery to a user (e.g., via a breathing tube interconnecting a headpiece and the outlet port).

Blower assembly for a powered air-purifying respirator

Protective helmet

A protective helmet includes a shell, which defines a bottom opening and an internal cavity for receiving the wearer's head. The shell further includes a brim with a central opening defined in the brim. An attachment mechanism for securing an accessory to the shell includes one or more openings defined through the brim on either side of the central opening, wherein each of the openings includes a larger diameter portion and a smaller diameter portion, which are separated by a detent. Each opening receives a respective boss of the accessory, which can be selectively advanced from the larger diameter portion to the small diameter portion of the opening. Furthermore, the attachment mechanism includes a slot defined in and along the edge of the shell, with the slot corresponding with the central opening defined in the brim, such that the slot is configured to receive a projection extending from the accessory.

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Georgetown, KY, United States of America

Paul A Kinzer