Abstract: A blow-molded structural panel has a stiffening rib structure in which the height and width of the rib structure varies over its length. For example, the rib structure may have three tall portions separated by two short portions, with a gradual slope in height between the various portions. The rib structure is preferably wider in the short portions than it is in the tall portions. The lower height of the rib structure in some portions enhances the stiffness of the panel, while also using less material because the plastic does not have to be drawn so deeply into the mold in the short portions.

Abstract: A height adjustment mechanism for an adjustable height table includes an outer sleeve, an inner sleeve, a plug, and a locking mechanism. The outer sleeve is disposed outside the inner sleeve, and the outer sleeve and the inner sleeve are slidable relative to each other. The plug is disposed outside the inner sleeve, and is slidably connected to the inner sleeve. The plug is disposed at an upper end of the outer sleeve, and an outer wall of the plug includes a pressing portion. The locking mechanism operates to push the pressing portion tightly against an outer wall of the inner sleeve to increase the friction between the plug and the inner sleeve, so that the plug and the inner sleeve are relatively fixed.

Abstract: A blow-molded structural panel has a stiffening rib structure in which the height and width of the rib structure varies over its length. For example, the rib structure may have three tall portions separated by two short portions, with a gradual slope in height between the various portions. The rib structure is preferably wider in the short portions than it is in the tall portions. The lower height of the rib structure in some portions enhances the stiffness of the panel, while also using less material because the plastic does not have to be drawn so deeply into the mold in the short portions.

Abstract: A comfortable fabric with a strong three-dimensional effect is woven from warps and wefts. The warps and the wefts are woven into a 1/1 pattern, wherein the warp density is 11 threads/cm and the weft density is 10 threads/cm. The warps and the wefts each include a cationic dyeable polyester hollow yarn that comprises two different polyester yarns which can be dyed with two different colors. The warps and wefts comprise big-belly yarns and the cationic dyeable polyester hollow yarns. The resulting fabric has protruding patterns, a strong three-dimensional effect, good air permeability, a rough fee to the touch, and a unique aesthetic appearance.

Abstract: A blow-molded plastic structure has a hollow interior portion formed during a blow-molding process, and includes first and second outer portions that are spaced apart from each other, with the hollow interior portion disposed there between. The structure includes a pattern of structural stiffening features that are integrally formed in the second outer portion. The pattern of structural stiffening features includes a plurality of tripodal depressions disposed in rows and columns and a plurality of convex regions disposed in rows and columns between the plurality of tripodal depressions. Each convex region has a maximum height between the first and second outer portions. Each of the tripodal depressions extends into the hollow interior portion, includes three indentations disposed adjacent the first outer portion, and includes an island spaced away from the first outer portion. The island has three sides, each of which is disposed adjacent one of the three indentations.

Abstract: An anti-wobbling adjustable height stool includes an adjusting screw vaving a threaded seat support spindle and a top spindle head and a stool seat assembly. The stool seat assembly includes a stool seat, and a connecting frame connected with a bottom of the stool seat. The connecting frame is opened with an installation hole, and the spindle head penetrating through and being arranged in the installation hole to enable a tight fit of the spindle head with the connecting frame.

Abstract: A height adjustment mechanism for an adjustable height table includes an outer sleeve, an inner sleeve, a plug, and a locking mechanism. The outer sleeve is disposed outside the inner sleeve, and the outer sleeve and the inner sleeve are slidable relative to each other. The plug is disposed outside the inner sleeve, and is slidably connected to the inner sleeve. The plug is disposed at an upper end of the outer sleeve, and an outer wall of the plug includes a pressing portion. The locking mechanism operates to push the pressing portion tightly against an outer wall of the inner sleeve to increase the friction between the plug and the inner sleeve, so that the plug and the inner sleeve are relatively fixed.

Abstract: A table has a tabletop, a vertical support, and a mounting frame disposed at a top end of the vertical support and attached to the tabletop. The mounting frame includes a fixing base, a rotating frame rotatably connected to the fixing base, and a rotating handle assembly rotatably connected to the rotating frame. The rotating frame is operable to rotate between a horizontal position and a vertical position. The rotating handle assembly includes an abutting block that engages the lower embedding notch in the fixing base when the rotating frame is in the horizontal position. The rotating handle assembly has a lower edge that engages the upper embedding notch in the fixing base when the rotating frame is in the vertical position. A handle, which extends outwardly from the rotating handle assembly, is configured to be operated by a user to move the rotating frame between the vertical position and the horizontal position.

Abstract: A movable vehicle capable of carrying stackable chairs comprises a base frame, a roller connected to the base frame for carrying the base frame, and a supporting frame disposed in the base frame. The supporting frame has a V-shape support with an upward opening. Advantages include adjustability of the supporting frame for placing and moving the stackable chair, and the V-shape of the supporting frame can either be an upward convex column, or an upward board, so as to carry different stackable chairs.

Abstract: A woven fabric for seats is made of warps and wefts woven into a four up four down pattern, wherein the warps density is 33.8 strips per unit length and the wefts density is 7.1 strips per unit length. The warps and wefts are both made of polypropylene.

Abstract: A woven fabric for seats is made of warps and wefts woven into a pattern with a ratio of 1:1, wherein the warps density is 8 strips per unit length and the wefts density is 9.2 strips per unit length. The warps and wefts are both made of polyester and linen, wherein the polyester comprises 94% by weight and the linen comprises 6% by weight.

Abstract: A folding chair comprises two front tubular legs, two rear tubular legs and a seat cushion board, with the front tubular legs intersecting the rear tubular legs. Two washers are arranged at an intersection of the front and rear tubular legs, such that each washer is located between a front tubular leg and a rear tubular leg. A pin passes through the front tubular leg, the washer and the rear tubular leg successively. The washer includes a curved base and a bowl-shaped support which is located in a central area of the curved base, and a through hole is formed at the center of the bowl-shaped support. The curved base is fixedly connected to the front tubular legs.