Abstract: There is provided a facepiece that does not hinder the movement of a wearer. A facepiece that covers a face of a wearer, the facepiece including: a front surface plate that is a transparent plate-like member having a size that can cover the face of the wearer; and a rotation mechanism passing through the front surface plate on either a right or left side of the wearer and being rotatable with respect to the front surface plate.

Abstract: There is provided a back carrier that does not hinder the movement of a wearer. A back carrier having a gas cylinder attached thereto, and carried on wearer's back, the back carrier including: a main body to which the gas cylinder is attached; and an adjuster including a regulator and a pressure demand valve attached to the main body and integrated with each other.

Abstract: [Object of the Invention] An object of the present invention is to provide a detachable connector between a face piece and a filter of a breathing apparatus comprising a bayonet connection mechanism for connecting a pair of members by pushing and twisting operation, wherein detaching of the filter from the face piece by accident or user error is effectively prevented.

Abstract: [Object of the Invention] An object of the present invention is to provide a full face piece of a breathing apparatus provided with an eyepiece for covering a front part and both side parts of a face and a main body integrally united with a circumference of the eyepiece so as to cover a circumferential part of the face, wherein the eyepiece is made of transparent hard plastic material and the main body is made of flexible elastic material, and wherein man-hours required to manufacture a metal mold for manufacturing the eyepiece are fewer than in the case of the conventional full face piece.

Abstract: [Object of the Invention] An object of the present invention is to provide a detachable connector between a face piece and a filter of a breathing apparatus comprising a bayonet connection mechanism for connecting a pair of members by pushing and twisting operation, wherein detaching of the filter from the face piece by accident or user error is effectively prevented.

Abstract: A breathing apparatus including a face piece for covering the whole face or part of the face, an inhale valve and an exhale valve provided on the face piece, a motor fan for supplying external air into the face piece through the inhale valve, a filter for cleaning the external air sucked into the motor fan, a breath monitoring apparatus provided on the face piece and not comprising the inhale valve and the exhale valve, and a controller for controlling the operation of the motor fan synchronously with the breath based on the detection signal from the breath monitoring apparatus.

Abstract: [Object of the Invention] An object of the present invention is to provide a chemical protective airtight suit for accommodating a self-contained breathing apparatus that is more comfortable to use than a conventional chemical protective airtight suit for accommodating a self-contained breathing apparatus, wherein the rear side of the head portion and the lower end of the portion accommodating the high pressure air vessel are not stretched, so that the user wearing the suit does not feel uncomfortable when the user crouches down, and the high pressure air vessel is not caught by the chemical protective airtight suit when the user takes off the suit.

Abstract: Provided is a mask which can be folded small and has improved portability and storability. A mask which can be folded small characterized in that, as FIG. 1 shows, a filter part, which comprises single or multi layered filter material and provides a rectangular section at the center when folded in two along the center line, is provided; triangular filter parts, each having the major side of the rectangular filter part as the bottom side, are formed in an integrated manner in the longitudinal direction of the rectangle, and tightening strings are attached to the respective minor sides of the rectangular filter part.

Abstract: A breathing apparatus including a face piece for covering the whole face or part of the face, an inhale valve and an exhale valve provided on the face piece, a motor fan for supplying external air into the face piece through the inhale valve, a filter for cleaning the external air sucked into the motor fan, a breath monitoring apparatus provided on the face piece and not comprising the inhale valve and the exhale valve, and a controller for controlling the operation of the motor fan synchronously with the breath based on the detection signal from the breath monitoring apparatus.

Abstract: A mask comprising a mask main body and a face seal, wherein the outer periphery part of the main body and the outer periphery part of the face seal are adhered, said face seal is composed of a sheet prepared by laminating soft resin such as polyurethane resin on one surface of elastic fabric made of nylon or polyester fibers, and said laminated sheet is cut off to have a modified ring shape.

Abstract: A mask comprising a mask main body and a face seal, wherein the outer periphery part of the main body and the outer periphery part of the face seal are adhered, said face seal is composed of a sheet prepared by laminating soft resin such as polyurethane resin on one surface of elastic fabric made of nylon or polyester fibers, and said laminated sheet is cut off to have a modified ring shape.

Abstract: Film made of floppy and deformable synthetic resin is used as a valve body of an inhalation valve and attached to the surface of a valve seat which is formed to a concave groove like shape having an arbitarily sectional view. The said valve body can not be applied to a conventional valve seat which has a flat surface. The inhalation valve is embedded to the breathing-in space of mask in which a filter pad is put in and prevent the valve body which separates from the seat at inhalation timing from entering into face contact part.

Abstract: An exhalation valve means of a positive pressure type respiration mask which can be easily converted to a non-positive pressure type (atmospheric pressure type) mask when necessary.The exhalation valve means includes a valve body unit, which comprises an exhalation value seat, a valve body supporting member which is detachably mounted within an exhalation valve chamber, and a valve body which is supported by said valve body supporting member and energized against said exhalation valve seat. Said valve seat has a means for mounting a rubber membrane valve body which is used for the valve body unit.

Abstract: A pressure responsive diaphragm valve, particularly suitable for a respiration responsive valve for a respirator mask. The whole of the valve assembly body is constituted by the mutually laminated layer members and assembled by simply tightening the layer members together. All of the layer members can be made by molding, without machining.

Abstract: A face shield assembly having the upper part of both side peripheral portions or the upper part of both side peripheral portions and the upper peripheral portion in an eyepiece, abutted against the frame. The remaining parts of the eyepiece are fitted in the peripheral portion of a view window of the frame. The right and left side upper corner portions of the eye piece are retained in position by a pair of retaining members and each of the retaining members is held in position by a hand-operated screw and an engagement between an engaging opening and a top-enlarged ridge. At least one anchoring bore formed in the side upper corner portion of the eye piece is fitted with a pin formed on the frame such that the eyepiece can be easily replaced without using any tools.

Abstract: A mask in which an enclosure of an intake filtration chamber is partly or totally formed of a filtration medium so that a separate filtration medium need not be provided within the intake filtration chamber for replacement. The replacement of the filtration medium is effected by replacement of the entire intake filtration chamber. The invention provides a mask which is small in size and low in intake resistance and is free from a possible flow of contaminated air into the mask.