Abstract: A protective bodysuit comprises a body portion and a hood portion that are selectively securable together via a zipper along a sealing interface. The body portion and the hood portion are constructed of a material for protecting a wearer against chemical, biological, radiological, nuclear, and/or fire hazards. Additionally, the protective bodysuit comprises a sealing apparatus that is removably coupled between opposing ends of the zipper to provide a complete seal between the hood portion and the body portion.

Abstract: A sealing mechanism for use in protective garments, such as hazard suits and the like, enables components of the protective garments, such as gas masks, hoses, respirators and the like to be removably attached to the garment material. The sealing mechanism includes a framing ring which may be attached to an object to be sealed to the garment material and a locking ring. The framing ring and the locking ring are adapted to engage each other in a snap fit type connection while trapping a portion of the garment material therebetween to thereby form an airtight seal between the object and the protective garment.

Abstract: A docking assembly for a self-contained breathing apparatus comprises a seat, a coupler, a pawl, and a spring. The self-contained breathing apparatus generally includes a compressed air tank having a head and a nozzle, the compressed air tank being adapted to deliver breathable air to a user. The seat of the docking assembly is adapted to releasably retain the head of the compressed air tank. The coupler comprises a plurality of circumferentially spaced teeth and a handle and is adapted for threaded engagement with the nozzle of the compressed air tank. The pawl is mounted to the seat for pivotal displacement and adapted to engage at least one of the plurality of teeth on the threaded coupler to lock the threaded coupler onto the nozzle. The spring biases the arm into the locked position.

Abstract: A combination of an SCBA system for providing bottled air to a user and a PAPR system for purifying ambient air for use by a user wherein the two systems are used alternatingly depending on the contaminated condition of the ambient air and the oxygen content of the ambient air.

Abstract: A docking assembly for a self-contained breathing apparatus comprises a seat, a coupler, a pawl, and a spring. The self-contained breathing apparatus generally includes a compressed air tank having a head and a nozzle, the compressed air tank being adapted to deliver breathable air to a user. The seat of the docking assembly is adapted to releasably retain the head of the compressed air tank. The coupler comprises a plurality of circumferentially spaced teeth and a handle and is adapted for threaded engagement with the nozzle of the compressed air tank. The pawl is mounted to the seat for pivotal displacement and adapted to engage at least one of the plurality of teeth on the threaded coupler to lock the threaded coupler onto the nozzle. The spring biases the arm into the locked position.

Abstract: A combination of an SCBA system for providing bottled air to a user and a PAPR system for purifying ambient air for use by a user wherein the two systems are used alternatingly depending on the contaminated condition of the ambient air and the oxygen content of the ambient air.

Abstract: An apparatus for protecting a user in a hazardous or contaminated environment caused by chemical, fire, biological, and/or nuclear contamination includes a self-contained breathing apparatus (SCBA) for providing tank stored breathable air, a powered air purifying respirator (PAPR) for purifying ambient air and a valve system that can be used to control the source of air from either the SCBA or the PAPR. The source of breathable air can be selectively controlled via manual or automatic controls while a protective body suit can be operably coupled with the SCBA and the PAPR to protect a user within the contaminated environment.

Abstract: The present invention relates to protective fabric that protects first-response personnel, like firefighters, who rush into disaster areas immediately after such events occur. In particular, this invention relates to garments such as hoods (like a balaclava-shaped hood) made from a multi-layer protective fabric that includes at least two active layers, that may provide biological, chemical and fire protection to first-response personnel. The balaclava-shaped hood may be integrated with a protective mask to create fully-encapsulated protection. This protective fabric may include an inner layer, an active middle layer and an active outer layer. The inner layer may be comprised of a stretchable fabric. The middle layer may provide an adsorptive barrier to chemicals, such as terror agent, Mustard gas or other such agents. The outer layer may be comprised of a flame-resistant fiber-product.