Abstract: Ambulatory apparatus forassisting an invalid is disclosed which includes a rigid frame on which is carried at least three wheels. A brake shoe cooperates with at least one of the wheels. The brake shoe is biased into engagement to limit the movement of the walker unless the bias is manually overcome or locked out of engagement.

Abstract: A portable shelter assembly adapted to be mounted in a folded condition for transportation purposes preferably on the top of a motor vehicle, and to be unfolded and distended while supported either on the vehicle or on the ground to provide a tent for shelter purposes. The assembly includes a pair of rigid base sections hingedly secured together at inner edges and foldable to define a container in which the remainder of the tent can be stored, and unfoldable to define a planar platform with upturned forward and after edges on which a flexible cover and frame members can be supported to provide accommodations. A simplified hinge arrangement for the base sections and the associated pivotally supported frame members is provided, and the flexible cover, when distended, provides for interior ventilation and improved exterior drainage.

Abstract: A building construction panel having, along a first marginal portion, first and second engaging means, and along a parallel second marginal portion a single engaging means adapted to engage either the first or second engaging means on the first marginal portion of an adjacent panel so that the panels can be disposed in lap or flush relation as desired, one of the portions of each panel terminating at a flange extending outwardly of the panel for use in connecting the panel to a building.