Abstract: A removable speedbump-cover comprising an elongated laterally arcuate panel which is designed to rest on its elongated edges on the surface of a driveway. Gusset plates extend transversely of the panel on its concave side. The lower edges of the gusset plates are spaced slightly from the surface of the driveway so as not to interfere with the mounting of the panel. The panel is sufficiently flexible to permit the lower edges of the gusset plate to come into contact with the surface under load.

Abstract: A trailer hitch which incorporates a surge brake actuator, together with a load distribution system and sway-damping units. The movable elements of the surge brake actuator system are mounted in sliding plate bearings composed of solid self lubricating resinous material. A frame is included in the movable elements and the load distribution and sway damping systems are anchored to and move with the frame.

Abstract: An articulated frame hanging chair, the frame of which includes an articulated parallelogram in which the exposed scissoring intersections are shielded and the articulation of the frame is adjustably limited to prevent the center of gravity of the hanging chair from shifting so as to dislodge the user in an unsafe manner.