Abstract: A helmet with an optical display system is provided with a custom fit protective liner which precisely aligns the wearer's eyes with the optics on the helmet. The helmet is manufactured by positioning the subject's head in a fixture; determining the position of the subject's pupils with respect to the fixture; scanning the subject's head with a laser while positioned in the fixture in order to obtain a 3-D model of the subject's head; and providing a helmet liner having an outer surface which is profiled to position it inside a helmet shell. The position of the subject's pupils may be determined by scanning pupil locating features of the fixture. The 3-D model is then used to provide the helmet liner with an inner surface which conforms to the subject's head and is positioned with respect to the outer surface so that the outer surface will have a predetermined position with respect to the subject's pupils. The helmet liner is then fitted in the helmet shell to form a helmet.

Abstract: A facepiece for use in a respirator for a pilot. The facepiece includes a separate mask and faceframe, each of which is individually fittable to the user. Once the two pieces are fitted, a mechanism may fixedly connect them to one another, thereby preventing further relative movement therebetween.

Abstract: A helmet with an optical display system is provided with a custom fit protective liner which precisely aligns the wearer's eyes with the optics on the helmet. The helmet is manufactured by positioning the subject's head in a fixture; determining the position of the subject's pupils with respect to the fixture; scanning the subject's head with a laser while positioned in the fixture in order to obtain a 3-D model of the subject's head; and providing a helmet liner having an outer surface which is profiled to position it inside a helmet shell. The position of the subject's pupils may be determined by scanning pupil locating features of the fixture. The 3-D model is then used to provide the helmet liner with an inner surface which conforms to the subject's head and is positioned with respect to the outer surface so that the outer surface will have a predetermined position with respect to the subject's pupils. The helmet liner is then fitted in the helmet shell to form a helmet.

Abstract: An integrated helmet system for presenting the wearer with visible images in which an outer helmet providing a surface on which the images are projected is adapted to be assembled on the frame of an inner helmet having a headband on which the frame is mounted for adjustment in front to back and side to side directions. A fixture adapted to be mounted on the frame provides a simulation of the images to be presented to the wearer on a surface positioned in front of the frame at a distance equal to the distance between the frame and the outer helmet viewing surface when the outer helmet was assembled on the frame, thus to permit the frame to be adjusted relative to the headband so that the outer helmet viewing surface is properly positioned with reference to the wearer's eyes when the outer helmet is assembled on the inner helmet.