Abstract: A method of checking joule heating of an integrated circuit design, the method includes dividing the integrated circuit design into a plurality of windows, determining a power index of each window, adjusting the specification current value associated with each of the corresponding windows, and generating a current violation report, by a processor, of the integrated circuit. Each window includes one or more circuit elements. Each circuit element is associated with a corresponding current value. Each window is associated with a corresponding specification current value. Each power index is associated with a corresponding window. An amount of adjustment of the specification current value is a function of the power index of each corresponding window. The current violation report includes one or more entries. Each entry is associated with at least a corresponding window and one or more corresponding current values which exceed the corresponding adjusted specification current value.

Abstract: A portable electronic device includes a main body and a heat dissipation module with a tiltedly installed centrifugal fan inside thereof. The main body includes an upper housing wall and a lower housing wall. The heat dissipation module includes a centrifugal fan, a heat dissipation fin array and a heat pipe. The centrifugal fan includes an impeller, a radial air outlet, an upper axial air inlet and a lower axial air inlet, wherein the centrifugal fan has a first side that is in contact with the upper housing wall and an opposite second side that is in contact with the lower housing wall. The heat dissipation fin array is located at the radial air outlet of the centrifugal fan. The heat pipe has a first end connected with the heat dissipation fin array and a second opposite end connected with a heat source.

Abstract: A preparing method for coiled nano carbon material is provided and includes forming a noble metal catalyst crystallite nucleus layer on the surface of the substrate by displacement of a noble metal catalyst, forming a composited nano carbon material on the metal layer of the substrate by using TCVD; in which the composited nano carbon material includes coiled carbon nano tubes and coiled carbon nano fiber. The measured quantity of the total coiled nano carbon tubes and coiled nano carbon fiber in the total measured quantity of nano carbon material is greater than 30%. The coiled nano carbon material can be acquired by scraping it off from the substrate surface.

Abstract: A preparing method for coiled nano carbon material is provided and includes forming a noble metal catalyst crystallite nucleus layer on the surface of the substrate by displacement of a noble metal catalyst, forming a composited nano carbon material on the metal layer of the substrate by using TCVD; in which the composited nano carbon material includes coiled carbon nano tubes and coiled carbon nano fiber. The measured quantity of the total coiled nano carbon tubes and coiled nano carbon fiber in the total measured quantity of nano carbon material is greater than 30%. The coiled nano carbon material can be acquired by scraping it off from the substrate surface.

Abstract: A portable electronic device includes a main body and a heat dissipation module with a tiltedly installed centrifugal fan inside thereof. The main body includes an upper housing wall and a lower housing wall. The heat dissipation module includes a centrifugal fan, a heat dissipation fin array and a heat pipe. The centrifugal fan includes an impeller, a radial air outlet, an upper axial air inlet and a lower axial air inlet, wherein the centrifugal fan has a first side that is in contact with the upper housing wall and an opposite second side that is in contact with the lower housing wall. The heat dissipation fin array is located at the radial air outlet of the centrifugal fan. The heat pipe has a first end connected with the heat dissipation fin array and a second opposite end connected with a heat source.

Abstract: A heat dissipation module includes a centrifugal fan and a heat dissipation fin array. The centrifugal fan includes at least one axial air inlet and a radial air outlet, wherein the radial air outlet is defined between a first sidewall and an opposite second sidewall with a tongue potion. The heat dissipation fin array is located at the radial air outlet of the centrifugal fan. The heat dissipation fin array and the radial air outlet substantially share an equal length L. The heat dissipation fin array has a middle wind stop section which is closer to the second sidewall than the first sidewall. The wind stop section has a length ranging from about 0.1 L to about 0.42 L.

Abstract: A combination castor includes a control unit, a linking unit, and at least two castor units. The control unit includes at least one mounting seat, at least one bushing mounted in the at least one mounting seat, and a pedal pivotally located at a side of the at least one mounting seat. The linking unit includes a propeller shaft extended through the at least one bushing and locked onto the pedal, at least one rotation plate secured on the propeller shaft, and at least two links each pivotally connected with the at least one rotation plate and the respective castor unit. Thus, when the pedal is stepped, the propeller shaft is driven to rotate the at least one rotation plate which drives the links to operate the castor units so as to brake or position the castor units simultaneously.

Abstract: A combination castor includes a linking device, and a plurality of castor assemblies connected with the linking device. Each of the castor assemblies includes an operation unit, a braking unit, and at least one roller. The operation unit of each of the castor assemblies includes a mounting seat, a slide, and a driven block. The braking unit of each of the castor assemblies includes a bushing, a housing, a control shaft, and a braking member. The roller of each of the castor assemblies has an inner periphery provided with a plurality of locking grooves. Thus, the linking device can drive and operate the castor assemblies to brake and position the castor assemblies simultaneously.

Abstract: A combination castor includes a control unit, a linking unit, and at least two castor units. The control unit includes at least one mounting seat, at least one bushing mounted in the at least one mounting seat, and a pedal pivotally located at a side of the at least one mounting seat. The linking unit includes a propeller shaft extended through the at least one bushing and locked onto the pedal, at least one rotation plate secured on the propeller shaft, and at least two links each pivotally connected with the at least one rotation plate and the respective castor unit. Thus, when the pedal is stepped, the propeller shaft is driven to rotate the at least one rotation plate which drives the links to operate the castor units so as to brake or position the castor units simultaneously.

Abstract: A combination castor includes a linking device, and a plurality of castor assemblies connected with the linking device. Each of the castor assemblies includes an operation unit, a braking unit, and at least one roller. The operation unit of each of the castor assemblies includes a mounting seat, a slide, and a driven block. The braking unit of each of the castor assemblies includes a bushing, a housing, a control shaft, and a braking member. The roller of each of the castor assemblies has an inner periphery provided with a plurality of locking grooves. Thus, the linking device can drive and operate the castor assemblies to brake and position the castor assemblies simultaneously.

Abstract: A combination castor brake system includes a linking device, and a plurality of castor assemblies connected with the linking device. Each of the castor assemblies includes an operation unit, a braking unit connected with the operation unit, and at least one roller connected with the braking unit. The operation unit of each of the castor assemblies includes a mounting seat, a slide, and at least two limit rods. The braking unit of each of the castor assemblies includes a housing, a top cap, a control shaft, an elastic member, and a braking member. The roller of each of the castor assemblies is rotatably mounted on the housing of the braking unit. Thus, the linking device can drive and operate the castor assemblies to brake and position the castor assemblies simultaneously.

Abstract: A castor assembly includes a support unit, a frame unit, a brake unit, and an operation unit. The frame unit includes a frame, a locating flange, and a wheel. The support unit includes a bearing, and an inner bushing. The brake unit includes a control shaft, a braking block, a lower toothed disk, an upper toothed disk, a locking block, and an elastic member. The operation unit includes a housing, a drive seat, a pressing roll, a cam block, and a restoring member. Thus, when the braking block presses the wheel to stop movement of the wheel, the upper toothed disk meshes with the lower toothed disk to lock the lower toothed disk and the braking block so that the wheel is locked and cannot be turned freely when the wheel is braked.

Abstract: A docking station for connecting a notebook computer includes a supporting frame, a connector for electrically connecting to the notebook computer, and a handle pivoted to the supporting frame. A first slot is formed on the handle, and the handle includes a pushing part for pushing the connector in a first direction. The docking station includes a first stopper, and one end of the first stopper is disposed inside the first slot of the handle. The first stopper does not stop the connector when the handle is located in a first position. The pushing part pushes the connector in the first direction so that the connector is connected to the notebook computer, and the first slot drives the first stopper in a second direction so that the first stopper stops a side of the connector when the handle rotates from a first position to a second position.

Abstract: A bed includes a base unit, two frame units each having a first portion pivotally connected with the base unit, two leg units each pivotally connected with a second portion of a respective one of the two frame units, and two support units each having a first portion pivotally connected with the base unit and a second portion pivotally connected with a respective one of the two leg units. Thus, the base unit, each of the two support units, each of the two frame units and each of the two leg units construct a four-link mechanism so that the bed can be expanded for use and can be folded when not in use.

Abstract: A docking station for connecting a notebook computer includes a supporting frame, a connector for electrically connecting to the notebook computer, and a handle pivoted to the supporting frame. A first slot is formed on the handle, and the handle includes a pushing part for pushing the connector in a first direction. The docking station includes a first stopper, and one end of the first stopper is disposed inside the first slot of the handle. The first stopper does not stop the connector when the handle is located in a first position. The pushing part pushes the connector in the first direction so that the connector is connected to the notebook computer, and the first slot drives the first stopper in a second direction so that the first stopper stops a side of the connector when the handle rotates from a first position to a second position.

Abstract: A castor includes a suspension unit, a castor body, a wheel unit, and a brake unit. The suspension unit includes an upright fixing bolt and a locking member. The wheel unit includes two rollers. The brake unit includes a positioning block, a sliding block, a biasing member, a drive member, and a braking pin. Thus, when the drive member of the brake unit is pressed, each of the rollers of the wheel unit is braked by and locked onto the castor body, and the castor body is locked onto the fixing bolt simultaneously, thereby locking the castor exactly and stably.

Abstract: A cleaning apparatus comprises a main rod, a wringing tube, a bearing, a lock, and a cleaning rag assembly. The wringing tube is coaxially put over the main rod and is glidingly movable along the main rod. The fastening device is mounted on the lower end of the main rod. The cleaning rag assembly surrounds a periphery of the main rod at a lower end thereof, having an upper end held by a connecting ring, which is mounted on the wringing tube, and a lower end mounted on the fastening device, allowing easily to replace the cleaning rag assembly.

Abstract: A high chair includes a front support frame (31), a rear support frame (32) pivotally connected with the front support frame, an upper support frame (12) having a first end pivotally connected with the front support frame, and at least one locking device (2) mounted on a second end of the upper support frame and detachably locked onto the rear support frame to releasably lock the upper support frame on the rear support frame. Thus, the high chair can be folded completely when not in use so as to largely decrease the space of storage and transportation. In addition, the high chair is folded or expanded easily and quickly, thereby facilitating the user folding or expanding the high chair.