Abstract: A sliding method on ice-surface aims at solve the problems of power output and poor durability and the difficulty in large-scale promotion. An ice-surface sliding tool includes a seat board, a U-shaped rod, sliding plates, H-shaped connecting frames, a pushing device, a hand-operated chain wheel and a reversing gear. One end of the upper end surface of the seat board is provided with a backrest. The U-shaped rod is provided on the side wall of the other end of the seat board. The lower end of the seat board is symmetrically provided with two sliding plates in parallel to each other. The sliding plates are connected with the lower end surface of the seat board through the H-shaped connecting frames. The pushing device is rotationally provided between the two H-shaped connecting frames. The hand-operated chain wheel is on the upper end of the U-shaped rod through a support bar.

Abstract: An energy production apparatus that includes a weight bearing member configured to alternate between an upper and lower position, and a drive shaft. A gear system can be connected to the weight bearing member and the drive shaft. The gear system can be positioned to rotate the drive shaft when a load is placed on the weight bearing member and the weight bearing member moves from the upper position to the lower position. A torsion spring can be connected to the drive shaft, the torsion spring positioned to wind as the weight bearing member moves to the lower position. A return member can be configured to return the weight bearing member to the upper position. A locking member can selectively engage the gear system, the locking member preventing the torsion spring from unwinding when engaged. A generator can be driven by the drive shaft as the torsion spring unwinds.

Abstract: An oscillator spring material comprising a mixture of a host material with an additive in proportions which permit the thermal evolution of the material's elastic modulus to be tuned, e.g. to correct or compensate for other thermal changes in an oscillator system. The additive comprises a crystalline material having an abnormal thermal evolution of elastic modulus. The host material has a normal thermal evolution of elastic modulus. The additive is mixed with the host material before the host material undergoes a phase transformation into its final form. The additive has a phase transformation temperature higher than the host material, so that additive remains in the same state while the host material phase transformation takes place.

Abstract: The present invention regards to a push car to push a parked car. The push car push the parked car effectively because the rotation direction of its rollers contacted on the earth surface is opposite to that of its another rollers contacted on the wheel of the car.