Abstract: An armrest includes a base and an arm support. The base has a connecting portion and an installing portion. A first surface at an end of the connecting portion is opposite to the installing portion. The arm support is adapted to assemble with the base, and the arm support is pivotable with respect to the base. The arm support includes a second surface abutting the first surface, with a cavity defined in one of the first and second surfaces. An engaging member is pivotally received in the cavity in a single pivoting direction from an unlocked position to a locked position. The arm support is fixed to the base in the locked position.

Abstract: A method for breaking the cell walls of microalgae includes cultivating microbes in a cultivating liquid, adding microalgae into the cultivating liquid to mix with the microbes, releasing a hydrolysis ferment from the microbes, hydrolyzing cell walls of the microalgae by the hydrolysis ferment of the microbes to decompose the cell walls of the microalgae into saccharide, and removing the microalgae from the cultivating liquid. Thus, the microbes release the hydrolysis ferment after the microalgae touch the microbes so as to hydrolyze and decompose the cell walls of the microalgae in a moderate manner without breaking the contents of the microalgae so that the contents of the microalgae can be released, absorbed and used completely.

Abstract: A curtain includes a curtain bracket (1) having an end to which a rotation driving device (3) is mounted. The rotation driving device (3) can actuate a curtain reeling drum (4A) to rotate a curtain cloth (7) or actuate a reeling rope device (4) to rotate a curtain cloth or shade (7). A reverse rotation releasing device (5) and a resilience reverse rotation mechanism (14) are connected to the rotation driving device (3). The rotation driving device (3) is comprised of a pull rope rotary disc (3c), a unidirectional clutch device (6) connected to the pull rope rotary disc (3c), and a rewinding spring (3e) mounted between the pull rope rotary disc (3c) and a pull rope rotary disc box (3a). Thus, only one cord is sufficient to control opening of the curtain cloth or shade (7), and reverse rotation of the curtain reel drum (4A) is not adversely affected by the rotation driving device (3). It is convenient to use while avoiding injury to children.

Abstract: An adjusting structure of an armrest of a chair contains a first body having a bottom plate and a fitting tube; a vertically moving mechanism inserted in the fitting tube and including a second body, an actuating member, a controlling member, and a lip; a retaining mechanism including an engaging member and locking panel inserted in the through hole of the second body; a support element fitted onto the fitting tube and including a cutout to receive a pressing member; a resilient element secured in the support element and one end thereof being biased against an inner side of the support element, and another end of the resilient element abutting against the pressing member and the control end of the controlling member, the pressing member being used to compress the resilient element.

Abstract: A sucker attachment device includes a support base, a pivot seat pivotally mounted on the support base, a sucker mounted on the pivot seat, a rotation disk swivelably mounted on the support base, and a receptacle assembly mounted on the rotation disk. The pivot seat has a spherical universal connector pivotally mounted on the support base. The support base has an end portion formed with a spherical pivot recess, and the universal connector is rotatably mounted in the pivot recess of the support base. Thus, when the support base is pivoted relative to the universal connector, the universal connector is rotated in the pivot recess through 360° so that the support base is pivoted relative to the pivot seat to change the angle and direction between the sucker and the receptacle assembly freely.

Abstract: A hub for a bicycle includes a shaft (12), a hub body (40), a ratchet wheel (43), a drive seat (10), a support ring (15), a rotation ring (21), a plurality of pawl members (22), a stop bushing (121), a limit ring (30) and a damper (33). Thus, when the drive seat is rotated backward by the pedal, each of the pawl members is retracted into the respective receiving slot (212) of the rotation ring to disengage the oneway ratchet teeth (42) of the ratchet wheel, so that each of the pawl members is spaced from and will not touch the ratchet wheel when the pedal is driven backward to prevent from producing a noise when the pedal is driven backward.

Abstract: A sliding type tool storage structure comprises an open-close switching unit clamped between a first storing element and a second storing element that can slide relative to each other. When the first storing element slides relative to the second storing element to change their relative position, stopping portions on the open-close switching unit will open or close tool storing grooves on the respective storing elements. Being a simple structure, the sliding type tool storage structure is easy to carry. Furthermore, since the tool storage structure can be operated simply by sliding of the first and second storing elements, it is very convenient to use.

Abstract: A heatsink device includes an insulating board having at least one periphery, a first face and a second face, at least two conductive plates mounted on at least one of the first face and the second face of the insulating board, and at least one heat source mounted on the insulating board and having two conducting poles conducted with the at least two conductive plates. Thus, the at least two conductive plates are directly connected with the two conducting poles of the at least one heat source so that the at least two conductive plates can carry away the heat produced by the at least one heat source so as to provide a heatsink effect to the at least one heat source.

Abstract: A DC fan of an inner rotor type includes a housing having a frame defining a compartment. A rotor is rotatably received in the compartment. The rotor includes a shaft having an outer periphery and a permanent magnet fixed to and around the outer periphery of the shaft. A stator is fixed in the compartment of the frame and surrounds the rotor. The stator includes a plurality of magnetic pole faces facing an outer periphery of the permanent magnet. An air gap is formed between each magnetic pole face and the permanent magnet. The stator further includes at least one coil. An impeller is coupled to an end of the shaft. A drive control unit is mounted in the compartment and electrically connected to the at least one coil of the stator.

Abstract: An adjustable wrench includes a fixed jaw, a movable jaw, and a handle. The fixed jaw includes a chamber and a hole defined therein. An adjusting mechanism and an abutting mechanism are disposed in the chamber. The adjusting mechanism includes a worm gear and a fixing member. The abutting mechanism includes an abutting member. The handle is pivotally fixed to the fixed jaw. The adjustable wrench is operable in a first direction wrenching an object and includes the worm gear stopped from moving along the fixing member by the abutting member fixedly abutting against the worm gear. The adjustable wrench is operable in a second direction moving relative to the object and includes the worm gear adapted to be moved with respect to the fixing member and including the movable jaw moving with respect to the fixed jaw and the abutting member not fixedly abutted against the worm gear.