Abstract: A tire capable of reducing pitch noise and a method for designing a tire tread pattern thereof are disclosed. The method includes the following steps: generating a plurality of discrete points on a circumferential surface of a tire using a pseudo-random point generator; connecting each of the discrete points and the neighboring discrete points to form triangles according to the Voronoi geometry principle, extending perpendicular bisectors of sides of each of the triangles so that the perpendicular bisectors are intersected to form a Voronoi diagram; reducing the Voronoi diagram by a reduction ratio with each of the discrete points as a center to form a plurality of tread blocks not having concave corners on the circumferential surface of the tire, dividing the circumferential surface of the tire into convex portions and concave portions by means of the tread blocks to form a tire tread pattern of the tire.

Abstract: A child seat includes a seat portion and an anchoring harness. The seat portion has a lower surface facing downward, an upper surface facing upward for providing sitting support, a rear edge defining a rear border of the lower and upper surfaces, and a slot formed through the seat portion and opened on the lower and upper surfaces, the slot being located adjacent to the rear edge. The anchoring harness is routed through the slot and extends outward on the lower and upper surfaces. The anchoring harness includes a first and a second end, the first end having a fastener operable to attach with an external anchorage fixture, and the second end being positioned across the slot adjacent to the upper or lower surface, the second end being in obstructing contact against a region of the seat portion around the slot to retain the anchoring harness with the seat portion.

Abstract: A child seat includes a seat portion and an anchoring harness. The seat portion has a lower surface facing downward, an upper surface facing upward for providing sitting support, a rear edge defining a rear border of the lower and upper surfaces, and a slot formed through the seat portion and opened on the lower and upper surfaces, the slot being located adjacent to the rear edge. The anchoring harness is routed through the slot and extends outward on the lower and upper surfaces. The anchoring harness includes a first and a second end, the first end having a fastener operable to attach with an external anchorage fixture, and the second end being positioned across the slot adjacent to the upper or lower surface, the second end being in obstructing contact against a region of the seat portion around the slot to retain the anchoring harness with the seat portion.