Abstract: Versatile multi-function legs can have different end portions to have either a shorter or a longer length but can otherwise be of identical form. In saw-horse structures, the two lengths, together with panels of different heights and connections between legs and panels, allow a variety of configurations. For folding of such structures, sturdy and reliable pivotal connections are provided through engagement of bearing surfaces of knuckle projections on adjacent legs. For A-frame structures, the legs can provide vertical posts that have openings receiving two lower beams and supporting a third beam at a higher elevation. The legs can also provide horizontal sand rails in A-frame structures. Legs of both lengths can be molded using common sets of tools and allowing a change between lengths to be readily made during a press run.

Abstract: Versatile multi-function legs can have different end portions to have either a shorter or a longer length but can otherwise be of identical form. In saw-horse structures, the two lengths, together with panels of different heights and connections between legs and panels, allow a variety of configurations. For folding of such structures, sturdy and reliable pivotal connections are provided through engagement of bearing surfaces of knuckle projections on adjacent legs. For A-frame structures, the legs can provide vertical posts that have openings receiving two lower beams and supporting a third beam at a higher elevation. The legs can also provide horizontal sand rails in A-frame structures. Legs of both lengths can be molded using common sets of tools and allowing a change between lengths to be readily made during a press run.

Abstract: A warning device includes three components of an orange fluorescent material that carry reflectors of a red reflex reflective material. The components are pivotally connected to be operable to a compact folded condition. In an unfolded operative condition, an attachment structure secures a lower end portion of a first component to the upper edge of a vehicle window. The first component then extends outwardly at a sixty degree angle, a second component then extends horizontally outwardly from the lower end of the first component and the third component then extends inwardly and upwardly and at a sixty degree angle from the outer end of the second component to the upper end of the first component. The device then presents a triangularly shaped area having an outer border defined by the reflectors and an inner border defined by portions of the components. The attachment structure is sturdy and provides a reliable support of the device while being of a small size.

Abstract: An A-frame barricade has the capability of being adjusted to a desired length. The barricade includes a pair of A-frame leg support members and a generally elongate beam assembly which connects the leg support members. The beam assembly is comprises two beam members which are slidably joined by interlocking elements to enable adjustment of the length of the barricade.