Abstract: A windshield wiper protector includes a protection actuating assembly connected to the wiper and a stationary lifting arm attached to the windshield. A roller is pivotally mounted on the top of the stationary lifting arm and an inclined drive plate is attached to the protection actuating assembly. The protection actuating assembly and the wiper will be lifted up when the wiper is moved to the original position due to the inclined drive plate.

Abstract: A latch assembly has a casing, a housing, a latch bolt, a slide, a connecting member, a lever holder, a lever and an adjusting pin. A slot is longitudinally defined in the housing. Two detents are respectively defined in opposite ends of the slot. The slide is connected to the fixed member with the connecting member that engages one of the notches in the fixed member. A notch is defined in the bottom of the slide. A biasing member is arranged between the slide and the connecting member to provide a biasing force to the connecting member to engage the fixed member. The adjusting pin extends through one of the detents, aligns with the notch in the slide and abuts the bottom of the connecting member. With such an arrangement, only one hand is needed to adjust the latch assembly.

Abstract: A PLL circuit produces first to n-th (n being an integer equal to or greater than 2) reference signals. A first variable frequency divider divides the frequency of an output of a voltage-controlled oscillator to produce a first feedback signal. A second variable frequency divider divides the output of the voltage-controlled oscillator to produce second to n-th feedback signals. A phase comparator compares the phases of the first to the n-th reference signals with the phases of the first to the n-th feedback signals to produce first to n-th error signals. A controller produces a control signal from the error signals. The PLL circuit synchronizes the first reference signal with the first feedback signal in phase after the phase difference between at least one of the first to n-th reference signals and a corresponding feedback signal becomes smaller than a predetermined value. The frequency-division ratio of the second variable frequency divider is 1/n that of the first variable frequency divider.

Abstract: A heat sink fastener is applied to fasten a heat sink contacted with an electrical element mounted on a substrate. The heat sink fastener has a pillar integrally formed by an upper segment and a lower segment that further has an arrowhead hook, a coil spring winded around the pillar, and a cannular column with two openings for receiving the pillar. A step is formed around the first opening defined at one end of the column, and the second opening is defined at the other end of the column to allow the lower segment and the hook to pass through. When heat sink fastener is applied to fasten the heat sink to the substrate, the column is pressed downward to the heat sink, and the hook is inserted through the heat sink and the substrate to be tightly and upwardly pressed against the bottom of the substrate.

Abstract: A smoke cooker with a chimney has a base, a cover detachably connected with the base, a chimney detachably connected with the cover and a lid assembly mountable on the chimney. The smoke cooker is able to be separated into an oven portion and a chimney portion so as to function differently. When the oven and the chimney portions are assembled, the smoke cooker is able to be used to roast food or cure food with smoke.

Abstract: A strap tightener includes a limit nub extending outward from each of the wing plates of the seat. An indent is defined in each of the cams of the side plates to correspond to the limit nub and receive the limit nub when releasing the strap to lock the lever and the seat together to reduce the shearing force between the lever and the seat and the pivot pin. Consequently, the pivot holes in the seat and the lever do not wear as much and maintain good concentricity.

Abstract: A drawer rail includes an outer rail fixed to a furniture item, a sliding rail slidably contained in the outer rail, a ball rail slidably contained in the sliding rail, and an inner rail slidably contained in the outer rail and fixed to the drawer or a keyboard supporter. The sliding rail has a front end extending towards an outermost side of the drawer by which it is pulled outward. A positioning device is fixed on the sliding rail near the front end of the sliding rail. The positioning device has a body and a head having a pair of side slopes that are able to respectively engage with a pair of side walls of a groove defined in a bottom of the ball rail. The positioning device of the invention is able to provide a stable positioning effect for the inner rail, and thus the drawer, when the drawer is pulled to an outermost position.

Abstract: A feeding device for a hemstitching machine includes a base having a feeding end with a protrusion extending from the feeding end and being inclined relative to the plane of the base. A slot is longitudinally defined in the base opposite to the feeding end. A sliding shuttle is slidably mounted on the base and has a groove defined to correspond to the protrusion of the base. The sliding shuttle includes two opposite sides each having a positioning plate attached to the sliding shuttle. A rotating shuttle rotatably attached to the base includes a U-shaped pivot seat pivotally attached to the base. A torsion spring is mounted in the pivot seat and secured between the pivot seat and the base. A drive arm extends from the pivot seat and a handle extends from the bottom of the pivot seat.

Abstract: A power supply having a mixed regulator is able to provide the suitable power source according to the changing load by a switching mode voltage circuit and a series pass controlling circuit. The series pass controlling circuit has high sensitivity in detecting the changing the load, thus the power supply offers the suitable power source according to the changing of the load. The switching mode voltage circuit controls the transformer to output voltage by a PWM IC, so that the transistors for driving the transformer need not be powerful transistors which generate excessive heat. Thus a heat sink is not necessary and the power supply can accordingly be of a compact size.

Abstract: The present invention provides a multi-purpose control device with a remote controller and a sensor. The multi-purpose control device includes a detecting body, a remote controller for controlling the detecting body, and a receiver connected to a light. The detecting body is positioned at an entry way to form a sensing region, thereby the detecting body is not only able to receive a remote control signal emitted from the remote controller but also to sense human bodies entering the sensing region. After the detecting body receives the remote control signal or senses a human body entering the sensing region, the detecting body emits a signal to the receiver to actuate a light. The control device does not require reconfiguration of wiring. The present invention can sense a human body entering a sensing region in the dark to actuate a light automatically. The remote controller associated with the detecting body can provide multiple remote functions, including a lux level setting and a time setting.