Abstract: A portable solar oven which innovatively combines improved elements to achieve and maintain a high internal temperature. In the shown embodiment, a box-shaped insulated body shell includes a pair of side walls, a front wall, a back wall, and a base. The front wall has an insulated door made integral therewith. The inner portion of the side walls and door have polished metal panels affixed thereto to reflect solar radiation into the interior of the oven. The back wall and base have a heat element disposed thereon for collecting direct and reflected solar radiation, thereby maintaining a high constant temperature in the interior of the oven. A transparent top wall of dual pane tempered glass is permanently affixed to the topmost portion of the body shell. A reflective cover is rotatably affixed to either side of the body shell using a pair of toothed washers. The reflective cover reflects additional solar radiation into the inner portion of the oven.

Abstract: An improved exercising device of the type shown in U.S. Pat. No. 3,858,874. A pair of lines or cords pass over sheaves in pulley blocks carried on a rigid member attachable to a fixed support. The rigid member is sufficiently elongated to hold the sheaves or grooved pulleys in operative position when there is tension on only one or the other of the lines. Hand grips are provided with adjustable fittings at the ends of the lines so that the hand grips can be held in a desired position relative to the line extending from the grip. Foot stirrups are provided for each foot in the form of a cradle with openings for the front part of the foot in the form of a cradle with openings for the front part of the foot, the heel, and the ankle bones.

Abstract: A collapsible vehicle which in the exemplary form is a two wheeled vehicle driven by pedals and a sprocket chain. The frame is articulated with joints between frame members, permitting collapsing of the frame members into a substantially parallel relationship in the plane of the frame. Further joints allow collapsing of the frame members in a direction normal to the plane of the frame and into a position with the two wheels opposite each other on opposite sides of the frame members. The frame members include collapsible handlebars, steering column, and seat supporting members.