Abstract: A shelter of the type having collapsed and expanded configurations. In one of several example embodiments, the expanded configuration includes a tunnel-shaped portion forming a pair of opposing side walls and a roof section. The roof section has a peak positioned above the side walls and the tunnel-shaped portion may include opposing ends with a first opening at the first end and a second opening at the second end, each opening capable of accommodating an end wall. A first sheet is foldable along at least first and second crease lines to define the walls and roof section, the walls having an upper separation distance between the first and second crease lines when the shelter is expanded. The first sheet is segmented into panels with pairs of adjoining panels forming pleats each having a vertex extending from a crease line to an adjoining footing flap, the walls having a lower separation distance between footing flaps on different walls when the shelter is expanded.

Abstract: A shelter of the type having collapsed and expanded configurations. In one of several example embodiments, the expanded configuration includes a tunnel-shaped portion forming a pair of opposing side walls and a roof section. The roof section has a peak positioned above the side walls and the tunnel-shaped portion may include opposing ends with a first opening at the first end and a second opening at the second end, each opening capable of accommodating an end wall. A first sheet is foldable along at least first and second crease lines to define the walls and roof section, the walls having an upper separation distance between the first and second crease lines when the shelter is expanded. The first sheet is segmented into panels with pairs of adjoining panels forming pleats each having a vertex extending from a crease line to an adjoining footing flap, the walls having a lower separation distance between footing flaps on different walls when the shelter is expanded.

Abstract: The head immobilizer including a planar rack board, wherein the head immobilizer's rack board removably attached to a back board. The head immobilzer including a right wedge and a left wedge made of thin planar folded material slideably received upon the rack board for clamping a persons head between each of the wedges wherein the wedges including a locking tongue attached to the wedge and corresponding locking grooves defined in the rack board. The tongue engages with the grooves for operably locking the wedge in a preselected groove preventing the wedges from moving away from each other.

Abstract: The present invention a collapsible shelter comprises spaced apart first and second upright pleated wall sections disposed substantially parallel to each other, first and second slanted pleated roof sections joined at upper ends to form a saw tooth roof peak, and joined at lower ends to upper ends of said wall section to form saw tooth wall-roof junctions, wherein said pleated wall sections together with said pleated roof sections form a tunnel member which is collapsible by folding said pleated sections onto each other in accordion style.

Abstract: The present invention a collapsible shelter comprises spaced apart first and second upright pleated wall sections disposed substantially parallel to each other, first and second slanted pleated roof sections joined at upper ends to form a saw tooth roof peak, and joined at lower ends to upper ends of said wall section to form saw tooth wall-roof junctions, wherein said pleated wall sections together with said pleated roof sections form a tunnel member which is collapsible by folding said pleated sections onto each other in accordion style.