Abstract: Prior colloidal crystal preparation means requires much workmanship to obtain colloidal crystals, relying much on the expertise of an operator. To utilize colloidal crystals in various fields and develop them from now on, it is in demand to establish preparation means capable of preparing colloidal crystals with good reproducibility. The object of the invention is to meet such demand. A gas compressed in a compressor (1) is controlled by a gas pulse controller (3) to generate compressed air pulses, and the pulses are then guided to a colloidal crystal preparation vessel (6) having a flat plate type capillary portion to produce a pressure fluctuation, which is in turn used as driving power, thereby giving a flow and hard-stopping motion to a colloidal solution in the flat plate type capillary for formation of colloidal crystals of good single crystallinity.

Abstract: A rotating power tool has a transmission assembly having a transmission casing, a common annulus, at least two planetary gear assemblies and a thrust washer assembly. The common annulus is tubular, is mounted securely in the transmission casing and has an inner surface and multiple teeth. The planetary gear assemblies are connected in series in the common annulus, and each planetary gear assembly has a sun gear, a planet carrier and at least three planetary gear assemblies. The planet carrier is an annular bracket. The planetary gear assemblies are mounted around and engage a sun gear and the teeth in the common annulus. The thrust washer assembly is mounted between adjacent planetary gear assemblies. Consequently rotation of the transmission assembly is smooth and stable. The thrust washer assembly damps reactive force to prevent damage and guarantee normal operation of the hand-held rotating power tool.

Abstract: A roller skate has a body, a brake and a sole adjusting device. The body has a front bracket, a rear bracket and a holding frame. The brake is connected to the body and has an operating device and a braking device. The operating device is connected pivotally to the body and has a mounting frame, a connecting frame and a pressing arm. The braking device is connected to the rear brake below the pressing arm and has a clamping frame and an abutting frame. The clamping frame is connected to the body. The abutting frame is connected to the rear bracket above the clamping frame. The sole adjusting frame is connected to the body and has a baseplate, a front adjusting panel and two rear adjusting panels. The baseplate is mounted on body. The adjusting panels are mounted movably on the baseplate.

Abstract: A mahjong gaming apparatus with suit variable mahjong tiles has a server apparatus and multiple player terminal apparatuses. The server apparatus has a server and a random number generator. The random number generator is controlled by the server to randomly generate a suit of a particular mahjong tile. Each player terminal apparatus has at least one suit variable mahjong tile and a player terminal. The suit variable mahjong tile is capable of generating lines corresponding to the suit. The player terminal corresponds to a player, accepts inputs from the player, receives the suit from the server apparatus and controls the suit variable mahjong tile to generate the lines corresponding to the suit. Players may hold the suit variable mahjong tile to feel the lines before uncovering the mahjong tile.

Abstract: A hinge is mounted between a cover and a base of an electronic device. A lid covers the hinge and is attached securely to the base. The hinge has two tilting brackets, two tilting shafts, two linking assemblies and two actuating washers. Each tilting bracket has a mounting wing with an elongated hole and a mounting hole and a connecting wing with an abutting surface. The tilting shafts are mounted movably through the elongated holes. Each linking assembly has an actuating seat mounted around the tilting shaft, a holding seat formed on the actuating seat and protruding into the mounting hole and a resilient element mounted in the mounting hole and pressing against the holding seat. The actuating washers are mounted securely around the tilting shafts and selectively abut the abutting surfaces of the connecting wings to lift up the cover.

Abstract: The device comprises a body provided with bypass ports embodied therein and an insert with a jet pump and sealing elements. The insert comprises a pass channel, a channel for supplying an active medium to the pump nozzle, a channel which is used for supplying a pumped-out medium to the pump and which communicates with the pass channel and an output channel connected to an annular space. A mounting seat for a sealing unit is embodied in the pass channel above the channel for supplying the pumped-out medium. Said mounting seat is provided with an axial channel for passing a cable, which is used for moving instruments along the well bore, therethrough and through the pass channel. An axially movable spring-loaded steady bush provided with bypass holes in the wall thereof is arranged in the body. The insert provided with the pump is placed on the mounting seat embodied in the bush. An annular recess limiting the bush displacement is embodied in the body.

Abstract: It is possible to provide a frequency component measuring device capable of narrowing the range of transmission frequency of a local oscillator, preventing degradation of the level measurement accuracy, and measuring the level of a modulation wave. The device includes: a local oscillator (24) capable of performing sweep in a predetermined frequency range; a mixer (22) for mixing a local oscillation signal outputted from the local oscillator (24) and a measured signal so as to subject the measured signal to a frequency conversion; a plurality of intermediate-frequency filters (44, 46) for extracting and outputting components of different intermediate frequencies from a signal outputted from the mixer (22); and an image removal processing section (66) for performing image removal according to the plurality of intermediate-frequency signals separately outputted from the intermediate-frequency filters (44, 46) corresponding to frequency sweep operations performed by the local oscillator (24) more than once.

Abstract: A moisture-wicking and fast drying cloth has an outer layer and an inner layer. The outer layer is made of hydrophilic synthetic fiber and has multiple meshes. The meshes are defined through the outer layer. The inner layer is made of hydrophobic synthetic fiber and is bonded to the outer layer. The inner layer exposed by the meshes pulls away from a person's skin and protrudes into the meshes when perspiration exceeds evaporating moisture from the outer layer, so area of the inner layer contacting the person's skin will be reduced to make the person comfortable.

Abstract: A waterproof casing for a power supply has a lower casing, an upper casing, an inlet cover and an outlet cover. The lower cover contains electronic components. The upper casing is mounted on the opening of the lower casing and has an inlet cavity, at least one inlet, an outlet cavity and at least one outlet. The at least one inlet and outlet are formed through the upper casing and respectively communicate with the inlet cavity and outlet cavity. The inlet cover and outlet cover respectively seal the inlet cavity and the outlet cavity, communicate the inlet cavity and the outlet cavity with the lower casing to allow the air to flow inside the casing and to keep the water from flowing in the inlet cavity and the outlet cavity. Structure of the waterproof casing is simplified, so benefits manufacturing.

Abstract: A pneumatic ink-jet system is applied in an inkjet printer and uses a negative pressure generator, which is designed according to the Bernoulli's Theory, with a stable airflow in a certain speed to generated stable pressure inside at least one inkpot and at least one print head. Therefore, the at least one print head is kept in an appropriate wet state and the quality of printing is enhanced. Moreover, a top surface of the ink inside the at least one inkpot can be controlled to be higher than the at least one print head, so the pneumatic ink-jet system can be applied in a large format inkjet printer.

Abstract: A pool safety sensing system to attempt to reduce the likelihood of drowning visually observes a zone with a camera, and if detected motion occurs, and alarm is generated. The alarm can be visible, audible, text based (email, with or without attached images, instant message) or telephonic. Alarm events can be stored for future reference. Zones of sensing or zones to ignore when monitoring may be defined in the field of view of the camera. Motion thresholds, such as size of moving object, speed of movement, can be employed to adapt to particular location requirements and types of sensing.