Abstract: A child play yard includes a frame that includes legs, lower cross bars having first ends pivotally coupled to lower ends of the legs, and a hub pivotally coupled to second ends of the lower cross bars, the hub including a hub mechanical central tube, a column slidably disposed within the hub mechanical central tube, a hub mechanical spindle disposed within the column, and hub lock fingers pivotally coupled to a lower portion of the column and including lower feet portions, the hub mechanical spindle having an enlarged diameter lower end portion that engages lower inner sidewalls of the hub lock fingers and maintains the lower feet portions of the hub lock fingers outside a perimeter of a lower opening of the hub mechanical central tube when the hub is disposed in a lowermost position in the frame.

Abstract: A child play yard includes a frame, a floor coupled to a lower portion of the frame, and a mattress configured to be removably coupled to the floor. The mattress includes a lower side to which is coupled a clip assembly including a base and a leg pivotally coupled to the base. The leg includes a detent extending therefrom. The floor includes a retention assembly having a first aperture through which the leg of the clip assembly passes and a second aperture through which the detent passes when the mattress is coupled to the floor.

Abstract: A child play yard includes a frame, a floor coupled to a lower portion of the frame, and a mattress configured to be removably coupled to the floor. The mattress includes a lower side to which is coupled a clip assembly including a base and a leg pivotally coupled to the base. The leg includes a detent extending therefrom. The floor includes a retention assembly having a first aperture through which the leg of the clip assembly passes and a second aperture through which the detent passes when the mattress is coupled to the floor.

Abstract: A child play yard includes a frame that includes legs, lower cross bars having first ends pivotally coupled to lower ends of the legs, and a hub pivotally coupled to second ends of the lower cross bars, the hub including a hub mechanical central tube, a column slidably disposed within the hub mechanical central tube, a hub mechanical spindle disposed within the column, and hub lock fingers pivotally coupled to a lower portion of the column and including lower feet portions, the hub mechanical spindle having an enlarged diameter lower end portion that engages lower inner sidewalls of the hub lock fingers and maintains the lower feet portions of the hub lock fingers outside a perimeter of a lower opening of the hub mechanical central tube when the hub is disposed in a lowermost position in the frame.

Abstract: A child stroller includes a frame member and a wheel attachment member including a first end and a second end. A wheel is coupled to the first end, with the second end coupled to the frame member. The stroller further includes a shock absorber having a body, an upper end coupled to the frame member, a lower end coupled to the wheel attachment member, and a spring mechanism disposed within the body. The spring mechanism includes an upper portion exhibiting a first spring constant, and a lower portion exhibiting a second spring constant different from the first spring constant.

Abstract: A child stroller includes a frame member and a wheel attachment member including a first end and a second end. A wheel is coupled to the first end, with the second end coupled to the frame member. The stroller further includes a shock absorber having a body, an upper end coupled to the frame member, a lower end coupled to the wheel attachment member, and a spring mechanism disposed within the body. The spring mechanism includes an upper portion exhibiting a first spring constant, and a lower portion exhibiting a second spring constant different from the first spring constant.