Abstract: A pressure differential containment structure, including a vacuum chamber and a pressure vessel, for operation in the pressure range of 1 to 2 atmospheres of pressure differential, using relatively thin wall material and incorporating strengthening members by folding or forming the walls of the containment structure itself. The structural configuration of the preferred embodiment is of rectilinear geometry with four lateral walls and two end walls. Each lateral wall component is preferably fabricated from at least one sheet, such as stainless steel, aluminum, or synthetic material including polymers and composites, to comprise reinforcing ribs or corrugations transverse to the longitudinal direction of the wall and include transverse flanges at each end.

Abstract: A device for constraining cargo in a vehicle, the device having expandability, flexibility and portability. The extendibility embodies adjustments in barrier length to a short length for storage of the cargo barrier and adjustments in barrier length to fit the requirements of the cargo configuration. The flexibility embodies both horizontal and vertical deviations from a straight line configuration of the cargo barrier as a device to adapt to the cargo and cargo storage area configuration. The portability embodies a device for rapid deployment and removal of the cargo barrier.

Abstract: The present invention is an adjustable support attachment for wheelchairs having vertical or horizontal arm rest members. The support, which is intended to position articles and devices within variable and convenient access to the occupant of the chair, is attached to the arm rest member by means of a mounting base, to which one end of a base tube is releasably and rotatably swivel-mounted. On the other end of the base tube is fixed an adjustable friction joint allowing angular positioning of a lower arm tube in a vertical plane. An adjustable pivoting friction joint on the radially outer end of the lower arm tube allows fully circular positioning throughout a plane perpendicular to the lower arm, in combination with an adjustable friction joint, integral with the pivotal joint, which allows angular positioning of an upper arm member within the rotatable plane including the lower arm.

Abstract: For maintaining cervical and spinal alignment during emergency immobilization, extrication, transportation, and radiological examination of a patient, a support used in combination with various fastening devices comprising a sheet with a curved cross-section made of radiotranslucent buoyant material which has a thin profile yet provides strong and rigid support. The sheet is contoured to support the patient's head, shoulders, and main body, preventing post-incident injury and discomfort. The margins of the support have a plurality of slots which serve both as handling means and as a means for attaching the fastening devices and are arcuately displaced for ease of access with minimal hazardous movement of the patient. Moreover, the head-supporting portion has a plurality of guide notches and a Velcro fastener for attaching fastening devices, with similarly arcuately displaced access.