Abstract: An extension cord with environmental condition sensing ability has a plug for connecting to a power source, and includes a main body, a sensor unit, and a current control unit. On the main body, there are provided a first socket group and a second socket group, which are electrically connected to the power source via the plug. The sensor unit is electrically connected to the second socket group for sensing an environmental condition and thereby generating a signal. The current control unit and the sensor unit together form an electric circuit, and the current control unit receives the signal generated by the sensor unit and turns on or cuts off electric current being supplied to the second socket group according to the received signal.

Abstract: A ball collecting device comprising a drum and a control element. A first cover and a second cover are installed at both ends of the drum respectively to form a containing space in the drum. The first cover and the second cover are hollow and connected to at least one ring-shaped body with an interval apart. Each ring-shaped body comprises at least one elastic element installed around the ring-shaped body. The first cover, the second cover and the ring-shaped bodies are connected by at least one rod. The control element is connected to the drum and provided for a user to hold and push the drum to roll. An elastic element installed around the second cover is provided for pushing at least one ball to shift and enter into the containing space for storage, so as to provide a convenient way of collecting balls.

Abstract: A tape dispenser for a tape roll comprises a main seat, a rotation member, a dragging member, a cutting edge, a contact member and a supporting member. The main seat has a front member and two side members, the two side members thereof are structured with a Concave-shaped hollow space. The rotation member is connected to one side member of the main seat and move toward to the other side member of the main seat. The dragging member is mounted between the tops of the two side members of the main seat. The cutting edge locates transversally at the top of the front member of the main seat. The supporting member is located below the dragging member. A clearance space is formed between the dragging member and the supporting member. The aforementioned Concave-shaped hollow space makes users with their fingers to access the free end of the tape roll.

Abstract: A multi-mode tandem bicycle includes a frame, a steering wheel, a directional wheel, a first pedaling member, a second pedaling member, a first seat, a second seat, a first transmission unit, and a second transmission unit. By pivoting at least one of the first seat and the second seat on the frame, direction of the first seat or the second seat can be changed and fixed on the aforementioned frame, and at least one of the first seat and the second seat is pointed toward and connected with the steering wheel, thereby resulting in a variety of riding modes.

Abstract: An auxiliary wheel structure for kid bicycle includes a mounting bracket fixedly mounted to an end of a rear wheel hub of the bicycle, a lifting arm pivotally connected at an end to an upper through hole on the mounting bracket, and an auxiliary wheel axle pivotally connected at an inner end to a lower through hole on the mounting bracket and fixedly connected at an outer end to an auxiliary wheel. One of the lifting arm and the auxiliary wheel axle is provided with a small hole while the other one of them is provided with a plurality of adjusting holes. A control assembly can be extended through the small hole and one of the adjusting holes to change a pivotal interval between the lifting arm and the auxiliary wheel axle, and thereby adjust an inclination angle of the auxiliary wheel at each lateral side of the rear wheel.

Abstract: This present invention discloses a desk lamp with a separable magnifier, which comprises a magnifier component and a desk lamp holder. Around the lens of the magnifier component, a plurality of illumination lamps is arranged for illumination. When the power storage module of the magnifier is exhausted, the handle of the magnifier can be inserted into the slot of the receptacle to charge. When the desk lamp is put into use, the magnifier component is combined with the receptacle as a desk lamp. The whole assembly is convenient.

Abstract: A preparation method for caffeine control and device thereof, mainly consisting of: a. mixing coffee powder and water in a container; b. applying a vibration force to the container for an acting time, and maintaining the operating temperature during this stage within a first working temperature range; c. compressing the space within the container to cause specific components in the coffee powder to be extracted and form coffee liquid; d. heating the coffee liquid obtained from step c to a second working temperature. Accordingly, vibration extraction and compression process at the first working temperature and the further heating process at the second working temperature are used to control the caffeine content of hot coffee.

Abstract: The writing instrument comprises a first hollow tube body, a second hollow tube body and a refill. The first hollow tube body comprises a passing hole. The second hollow tube body comprises a protrusion end to correspondingly, tightly fit with the first hollow tube body, and an air inlet at the other end. The first hollow tube body comprises scale holes, at least two semitone holes near the passing hole, first air outlets, the first air outlets being between the two semitone holes. The second hollow tube body further comprises a second air outlet. Via combination of the first hollow tube body and the second hollow tube body, different tones are generated by covering the scale holes and the semitone holes. The refill can be disposed into the writing instrument, and a nib of the refill can protrude outside of the writing instrument from the passing hole.

Abstract: A volatile liquid loadable porous metal or ceramic container and manufacturing method thereof provided with a structural body formed by metal or ceramic sintering and provided with breathable pores, which extend from an outer surface of the structural body to the interior of the structural body, and the breathable pores form spaces to transport or/and store liquid. The manufacturing method includes: a. taking a low temperature volatile material as the core; b. completely covering the aforementioned core with metal or ceramic powder in the predetermined mold; c. controlling compactness of the metal or ceramic powder; d. sintering of the core at a temperature higher than the vaporization temperature to cause gaseous effusion of the core; e. taking off the predetermined mold after completing sintering.

Abstract: A multi-mode tandem bicycle includes a frame, a steering wheel, a directional wheel, a first pedaling member, a second pedaling member, a first seat, a second seat, a first transmission unit, and a second transmission unit. By pivoting at least one of the first seat and the second seat on the frame, direction of the first seat or the second seat can be changed and fixed on the aforementioned frame, and at least one of the first seat and the second seat is pointed toward and connected with the steering wheel, thereby resulting in a variety of riding modes.