Abstract: A vertical axis wind turbine with wingletted cam-tiltable blades is provided, including: a generator, a shaft interconnected with the generator, and a plurality of blade sets coupled to the shaft. Cam members are provided inside the shaft and have guide sections of predetermined shapes. The blade set includes blades that are coupled to crank arms in contact with the guide sections. Thus, when the blades are located in a windward position and a leeward position respectively, the blades are caused by the guide sections to automatically and easily set at an optimum pressure-receiving condition and a least wind-resistance condition respectively, for receiving wind energy from variable directions so that the shaft can be rotated in low wind speed conditions to drive the generator for power generation.

Abstract: A vertical axis windmill includes a generator, a shaft mounted to the generator; and a plurality of blade sets. The blade set includes a blade rod rotatably connected to the shaft and carrying blades arranged on opposite sides of the shaft. Each blade is divided into first and second moment-inducing sections located on opposite sides of the blade rod. The first moment-inducing section is greater in area than the second moment-inducing section. Each blade is provided, at a predetermined location thereof, with a winglet. Stops for limiting swiveling of the blade are arranged on the blade set. When the blade set is moved so that the blades thereof are located in a windward position and a leeward position respectively, the blades are automatically and easily set at an optimum pressure-receiving condition and a least wind-resistance condition respectively, for receiving wind energy from variable directions.

Abstract: A fluid-driven turbine includes a main driving shaft defining a shaft axis and a plurality of blade sets symmetrically disposed about the main driving shaft. Each of the plurality of blade sets includes a rod extending radially from the main driving shaft in a direction transverse to the shaft axis. The rod defines a rod axis. Each blade set also includes a fluid-tiltable blade connected to the rod and extending along the direction of the rod axis. It has an airfoil shape in cross-section with a leading edge, a trailing edge, and a maximum thickness. The blade is divided into first and second moment-inducing sections located on opposite sides of the rod with the first moment-inducing section being greater in area than the second moment-inducing section. Also, it is rotatable about the rod axis between an optimum pressure-receiving position and a least fluid-resistance position for receiving fluid energy from variable directions.

Abstract: A toilet seat allowing a smooth lift up of the seat comprises a seat cover and a seat; two accommodation troughs on both sides of the seat and pivoted to the toilet; two boxes each divided into three compartments connecting through one another and containing a bypass trough; an air vent being provided between two troughs to balance pressure; a gap being provided on the partition in a V-shape between the second and the third compartments; and an inclined board further extending from the V-shaped partition.

Abstract: A toilet seat allowing a smooth lift up of the seat comprises a seat cover and a seat; two accommodation troughs on both sides of the seat and pivoted to the toilet; two boxes each divided into three compartments connecting through one another and containing a bypass trough; an air vent being provided between two troughs to balance pressure; a gap being provided on the partition in a V-shape between the second and the third compartments; and an inclined board further extending from the V-shaped partition.

Abstract: An improved structure of a self-lifting toilet seat is disclosed and the seat includes a toilet seat lid, a seat having two lateral sides being mounted onto a cavity at the near rear section thereof and the rear end thereof being connected to a securing seat, two liquid boxes provided with partitioning board within the box so as to isolate a plurality of slots to contain liquid and the slots being intercommunicated and the securing seat being connected to an adjustable sliding seat for the securing of toilet bowl of various sizes, characterized in that the front section of the liquid box is installed at the cavity of the toilet seat and the front section is protruded to form a securing board, by means of a securing element to pivotally mount at the pivotal hole of the cavity so that the front of the liquid box is formed into an actuating pivot.

Abstract: An improved structure of a self-lifting toilet seat is disclosed and the seat includes a toilet seat lid, a seat having two lateral sides being mounted onto a cavity at the near rear section thereof and the rear end thereof being connected to a securing seat, two liquid boxes provided with partitioning board within the box so as to isolate a plurality of slots to contain liquid and the slots being intercommunicated and the securing seat being connected to an adjustable sliding seat for the securing of toilet bowl of various sizes, characterized in that the front section of the liquid box is installed at the cavity of the toilet seat and the front section is protruded to form a securing board, by means of a securing element to pivotally mount at the pivotal hole of the cavity so that the front of the liquid box is formed into an actuating pivot.