Abstract: A tightener for a binding strap is disclosed. A base is penetrated with a rotating axle with a ratchet installed on its one end. A tooth limits the ratchet to move in a single direction. A driving element is mounted on the rotating axle. A ratchet tooth engages with the ratchet for the driving element to drive the ratchet. The driving element has a cam part and a blocking part.

Abstract: An electrical connector comprises a circuit board and a first housing, wherein the circuit board has a butt portion and a lap portion, the butt portion is formed thereon with a plurality of first contacts, the lap portion is formed thereon with a plurality of second contacts, the first contacts and the second contacts are connected with each other, the second spacing between the adjacent second contacts is larger than the first spacing between the adjacent first contacts, and the first contacts are arranged to couple to a butt connector. The first housing is assembled on the circuit board and positioned above the lap portion.

Abstract: The present invention is a computer system adapted to play audio files. The computer system includes a central processing unit, a storage unit, a first operating system, an interfacing unit, and a second operating system. The first operating system can control at least the CPU. The interface unit can interface with an external digital media device that may store a plurality of compressed audio files. The second operating system is capable of controlling the computer system operating in an audio playback mode. The power of the computer system is turned on and the computer system plays the plurality of compressed audio files in the audio playback mode when the external digital media device is in communication with the interface unit.

Abstract: A locking system for floor boards comprises a plurality of floor boards and a plurality of locking devices. Each floor board has two tongues on one lateral side and another tongue and a locking groove on the opposite lateral side. The floor board also has two grooves on its bottom side. The locking device has three protruding gripping extensions. Few locking devices are placed on each floor board before the floor boards are sent to a job site. At the job site, two adjacent floor boards are assembled together by inserting the tongue of one board into a space defined by the locking device and the tongues of the adjacent board. The tongues are further secured in place by compression of flexible buffers located at each protruding gripping extension.

Abstract: A two-element f? lens with short focal distance for a laser scanning unit comprises a first lens and a second lens. The first lens has first and second optical surfaces, the second lens has third and fourth optical surfaces, and all the optical surfaces in a main scanning direction on the optical axis are aspherical surfaces. The fourth optical surface has an inflection point in SAG counted from the optical axis to peripheral portion and its paraxial portion is convex that is disposed on the polygon mirror side. The two-element f? lens satisfies an optical condition of: 0.5429?tan(?)?1.2799, wherein ? is a maximum effective window angle. The first and second lenses of the two-element f? lens with short focal distance of the invention effectively reduces the distance from the polygon mirror to an imaging surface to achieve the purpose for reducing the volume of the laser scanning unit.

Abstract: An improved assembly of plunger and needle hub for a safety syringe needle device is disclosed, which comprises a syringe barrel, a needle hub and a plunger. The syringe barrel is shaped as a tube and has an interior periphery thereof shaped as a straight tube. The needle hub is inserted into the syringe barrel and has an integrated combining ring, which is bent inward as a hook and has a crease whereon the combining ring is bent inward. The needle hub has a nozzle jutting out of the syringe barrel for connecting a needle. The plunger comprises a plug for being fitly received by the syringe barrel and a front end thereof can be pierced through and coupled with the combining ring.

Abstract: A firing mechanism for a paintball gun is received in the path of the barrel and a trigger is used to activate the firing mechanism. The firing mechanism includes a driving member, a switch member, a control member and an inner part, all of which are received in the path of the barrel. The driving member drives the switch member to change the air flow in the marker so as to move the control member axially to control the high pressurized air to move the inner part such that the high pressurized air is released to eject the paintballs out from the barrel.

Abstract: The invention provides a method for providing enhancements to a BIOS system without using replacement hardware in a microprocessor-based device. The microprocessor-based device boots from a BIOS procedure and interrupts the BIOS procedure to read information from an information module inserted to a information module reader connected to the microprocessor-based device. The information read from the information module is used to selectively alter the BIOS procedure.

Abstract: A support for a practicing drum or electronic drum includes a pipe element with several stands. The pipe element is penetrated with a vertical bar. The support has a bar element whose both ends have first and second adjusting structures, respectively. The vertical bar goes through the first adjusting structure. The second adjusting structure has a side bar whose end is disposed with an instrument, such as drum or cymbal. The first and second adjusting structures enable the bar element and the side bar to change their orientations and positions. An instrument pedal is disposed underneath the pipe element. The instrument pedal and the pipe element are connected by a connecting structure to achieve firm positioning.

Abstract: A phase change memory wherein several phase change storage elements are coupled in series to share a single current source. The current provided by the current source is directed by a plurality of switches. To write/read the phase change storage elements, the invention provides techniques to control the current value generated by the current source and controls the states of the switches. The impedance summation of the phase change storage elements vary with the data stored therein.

Abstract: A ratchet connector includes a driving element, a control ring, and a working element. A tooth block is disposed in an open groove of the driving element. Both sides of the tooth block have several teeth. The control ring is mounted on the driving element to control the tooth block to move along the bottom of the open groove. The working element is mounted on the driving element. The teeth of the tooth block engage with the ratchet teeth on an inner surface of the working element.

Abstract: An adjusting mechanism for adjusting arm rest of a chair includes an inner tube with an axial groove in an outside thereof and multiple positioning holes are located within the axial groove. An outer tube is mounted to the inner tube and an arm rest is connected to a top end of the outer tube. An engaging portion protrudes inward from an inside of the outer tube and movably engaged with the axial groove of the inner tube, so that the outer tube can be moved relative to the inner tube. An operation member is pivotably connected to the outer tube and includes a hook which extends through the outer tube and is engaged with one of the positioning holes. A guide plate is located above the hook and movably accommodated in a guide slot in the outer tube so that the operation member is operated in stable status.

Abstract: An adaptive wireless receiver and method thereof is disclosed in the present invention. The receiver includes an antenna, a bandpass filter, a front-end unit and a demodulator. Elements inside the front-end unit can be reused when the receiver operates in a zero intermediate frequency (ZIF) mode and in a low intermediate frequency (LIF) mode. The front-end unit includes a first and second down-conversion mixer, an analog filter, a first and second analog-to-digital converter (ADC), and a digital filter.

Abstract: An antenna structure is disposed on a substrate. The antenna structure includes a -shaped radiation body and a first radiation body, and both share a feeding end and a grounding end. The feeding end and the grounding end are disposed to a side edge of the -shaped radiation body. The positions of the feeding end and the grounding end allow the -shaped radiation body to form the operation of two frequency bands. Moreover, the first radiation body is vertically extended from the side edge near the feeding end disposed to the -shaped radiation body, and continuously extended from an end to keep a spacing between periphery of the -shaped radiation body and the first radiation body, and extended to a front of an opening of the -shaped radiation body, thereby vertically extending toward the opening. Therefore, the first radiation body could provide the operation of another frequency band.

Abstract: A thin connector structure includes an upper iron shell, a lower iron shell, a circuit board, a protective layer and a glue layer. The circuit board is interposed between the upper and lower iron shells. Both sides on the inner surface of the lower iron shell are provided with a pin, respectively. Both sides of the circuit board have a fixing hole, respectively. The pins go through the corresponding fixing holes. The protective layer is interposed between the upper iron shell and the circuit board to prevent dissipation of electromagnetic waves. The glue layer is interposed between the lower iron shell and the circuit board for positioning the connector structure.

Abstract: An activation system is applied to a computer apparatus. An activation signal is received by the computer apparatus to implement a booting action. The system comprises an external power adapter and a detection unit. An external power is received by the external power adapter. The external power then is provided to the computer apparatus. Meanwhile, a power supply signal then is generated by the external power adapter. The power supply signal is detected by the detection unit. The activation signal is outputted by the detection unit after detecting the power supply signal, so as to boot the computer apparatus through the external power.

Abstract: A cargo bracing device includes a base having two side plates for rotatably attaching a reel drum, one or more toothed discs attached to the reel drum and controlled to rotate relative to the base with a stop, an operating arm having two legs rotatably attached to the reel drum, a catch device attached to the operating arm and engaged with the toothed disc, and an anchoring device may detachably anchor the legs of the operating arm to the reel drum, and the legs of the operating arm may be selectively disengaged from the reel drum to prevent the operating arm from being operated by unauthorized persons, and for preventing the cargo from being stolen by the unauthorized persons.

Abstract: A power system for managing charging, discharging and protection of rechargeable batteries is disclosed. The power system mainly includes a power system. The power system includes a switching circuit coupled to the rechargeable batteries to charge and discharge the rechargeable batteries. The power system includes a power management unit to control the switching circuit. The power system includes a temperature sensing circuit to monitor a temperature of the batteries, voltage detectors to monitor voltages of the batteries, and current detectors to monitor a current of the batteries. If an abnormal condition is sensed by the power management unit when the power system is in an operating mode, the power management unit will terminate the operating mode by switching off the switching circuit to protect the batteries and the power system.