Abstract: The shelf device mainly contains two rectangular top boards horizontally arranged side by side on top of a frame structure formed by at least three vertical and two horizontal frame members. Each vertical frame member has a number of horizontal beams each horizontal frame member has its two shorter edges hinged to the horizontal beams of two vertical frame members at the two sides of the horizontal frame member. The shelf device can be easily collapsed by lifting a handle on the top edge of the vertical frame member in the middle. When that happens, due to the way the vertical and horizontal frame members are hinged together, the top board and frame structure at the two sides of the shelf device are automatically closed towards each other. At last, the shelf device becomes a flat object for easy storage and carry.

Abstract: The storage device contains two U-shaped lower frame elements, two inverse U-shaped upper frame elements, a casing member, and some resilient element. The lower frame elements are hinged such that they can be closed towards or expanded away from each other. The two upper frame elements have their fork legs jointed to the fork arms of the lower frame elements, respectively. The engagement of the fork legs and arms is buffered by the resilient elements which are provided inside the fork legs, respectively.

Abstract: A foldable bicycle has an X-shaped frame including a folding device having two hinged portions to which two connection bars and a seat bar and a rear fork are fixed respectively to form an X-shape in an expanded condition. The two portions can be opened to fold the X-shaped frame. A handlebar and a front fork are respectively coupled to the connection bars. A shock absorbing device includes upper and lower tubes connected to the handlebar and the front fork respectively with a spring arranged therebetween. An adjusting device is arranged adjacent to a rear wheel to carry an auxiliary wheel through a bracket. The adjusting device allows the bracket to be positioned at an operation condition, a backward-bent standby condition, and a forward-bent stowed condition.

Abstract: A container comprising two first opposite side walls, two second opposite side walls, a bottom and a cover, said side walls, bottom and cover being all made of cloth, a first pocket wing extending outwardly from an upper edge of each of said first opposite side walls, a second pocket wings extending outwardly from an upper edge of one of said second opposite side walls, said cover being connected to an upper edge of another one of said second opposite side walls, a first paper board being inserted into said second pocket wing and being smaller than said second pocket wing, a pair of second paper boards being inserted into each of said first pocket wings, a bottom board placed on said bottom to push open said first and second side walls, whereby the container can be easily folded when not in use thereby facilitating its storage and transportation.

Abstract: A collapsible basket includes a fabric body, a base rack and a snap-in frame; magic tape being attached to the inner circumference of the opening of fabric body to cover up the snap-in frame; hooks each adapted with mobile locking levers being each provided on both sides of the base rack to hold the base rack at the bottom of the inner edge of the fabric body; the locking levers being collapsed and stacked for easy storage when the basket is not used and respectively fitting in the snap-in frame to stretch up the fabric body with a base board placed flat on the bottom of the base rack when the basket is in use.

Abstract: A gravitational animal trap. The trap includes a trap cage having a movable door, an unturned plate that can be adjusted in terms of different fulcrums thereof, and a sensing device that is pivotally jointed with the upturned plate to activate the door switch. When the prey enters the trap cage and steps on the upturned plate, causing the upturned plate to alter the state of equilibrium due to the gravitational force of the prey, the sensing device is activated to shut the movable door, thus achieving the object of entrapping the prey. A weight-adjusting balance device can be further installed with the present invention to effectively improve upon the sensitivity and timing for the shutting of the movable door of the gravitational animal trap.

Abstract: A gravitational animal trap comprises a trap cage having a movable door, an upturned plate that can be adjusted in terms of different fulcrums thereof, and a sensing device that is pivotally jointed with the upturned plate to activate the door switch. When the prey enters the trap cage and steps on the upturned plate, causing the upturned plate to alter the state of equilibrium due to the gravitational force of the prey, the sensing device is activated to shut the movable door, thus achieving the object of entrapping the prey. A weight-adjusting balance device can be further installed with the present invention to effectively improve upon the sensitivity and timing for the shutting of the movable door of the gravitational animal trap.