Abstract: A plasma generating device, has a plurality of cavities shaped like half-ellipsoids, a plasma cavity, and microwave sources. The present invention takes advantage of geometrical properties of the propagation of electromagnetic waves by enclosing an electromagnetic field in the microwave range in overlapping cavities that together are shaped like a plurality of half ellipsoids. Each of the cavities has a first focus and a second focus, with the first foci of the cavities place close to each other. Microwaves entering the cavities at the second foci propagate inside the cavity and are focused at the first foci. The area around the first foci of both half ellipsoids forms a plasma cavity, providing a large volume filled with a microwave field. Thereby an increased volume of an electromagnetic field and thus of a plasma is achieved.

Abstract: A commutate silencer of a computer system is described. The commutate silencer of the computer system is installed at the back end of the computer system, and comprises a shield device, a commutate device and at least one partition. The shield device comprises a first shield and a second shield, in which the first shield comprises an opening, the first shield and the second shield construct a first cavity, and the first cavity includes a plurality of outlets. The commutate device comprises a frame and a plurality of commutate diversion plates, in which the frame construct a second cavity, the diversion plates traverse the second cavity, the second cavity has an inlet and a ventilated opening, and the ventilated opening is connected to the opening of the first shield.

Abstract: A heat dissipation device with heat pipes is described. The heat dissipation device has at least one L-shaped heat pipe, a plurality of heat fins, and a heat sink base. One end of the L-shaped heat pipe is coupled to one heat pipe fixing trench of the heat sink base so as to increase a contact area for transmitting heat and therefore improve a heat dissipation efficiency thereof. The heat fins includes at least one upper heat fin and at least one lower heat fin to couple to the L-shaped heat pipe via a round opening and a long opening respectively. The heat dissipation device therefore reduces a volume thereof and save an occupation space in an electrical device.

Abstract: A plasma generating device, has a plurality of cavities shaped like half-ellipsoids, a plasma cavity, and microwave sources. The present invention takes advantage of geometrical properties of the propagation of electromagnetic waves by enclosing an electromagnetic field in the microwave range in overlapping cavities that together are shaped like a plurality of half ellipsoids. Each of the cavities has a first focus and a second focus, with the first foci of the cavities place close to each other. Microwaves entering the cavities at the second foci propagate inside the cavity and are focused at the first foci. The area around the first foci of both half ellipsoids forms a plasma cavity, providing a large volume filled with a microwave field. Thereby an increased volume of an electromagnetic field and thus of a plasma is achieved.

Abstract: A directional coupler for microwave cavities is used to guide microwave signal power in both directions. The directional coupler contains a first carrier and a second carrier overlapped with each other, a metal line (such as a micro strip line) between the first and second carriers, a signal connector between both ends of the micro strip line, and a metal shell. The first and second carriers and the micro strip line are made using the print board technology. A copper foil is formed on the circuit board surface of the first carrier to form metal lines (such as micro strip lines). The circuit board surfaces of the first and second carriers are coated with a metal shell by electroplating means. A microwave cavity directional coupler with a simple structure and manufacturing process is thus achieved.

Abstract: A directional coupler for microwave cavities is used to guide microwave signal power in both directions. The directional coupler contains a first carrier and a second carrier overlapped with each other, a metal line (such as a micro strip line) between the first and second carriers, a signal connector between both ends of the micro strip line, and a metal shell. The first and second carriers and the micro strip line are made using the print board technology. A copper foil is formed on the circuit board surface of the first carrier to form metal lines (such as micro strip lines). The circuit board surfaces of the first and second carriers are coated with a metal shell by electroplating means. A microwave cavity directional coupler with a simple structure and manufacturing process is thus achieved.

Abstract: The invention relates to a platform device for training golf comprising a base having a hollow half-spherical member on its top surface with a top opening thereon, and an activation mechanism provided within the half-spherical member and having a post extended through the opening to engage with an upper platform so as to enable the user to adjust the platform to one of various oblique angles and orientations about the base for training golf.

Abstract: A method for detecting completion of reaction chamber cleaning, comprising monitoring the pressure within the reaction chamber, calculating and tracking voltage versus time gradient of the pressure within the reaction chamber, recognizing when positive and negative gradients of pressure change have occurred and, based on this recognition, terminating the cleaning process of the reaction chamber.

Abstract: A telephone circuit is composed of a current circuit, an hybrid circuit, a noise inhibiting unit, and a CAS detector circuit. The current circuit has two input ends connected with tip and ring of the telephone line, and two output ends connected with two input ends of the hybrid circuit. The signal received by two input ends of the hybrid circuit is analyzed. The noise inhibiting unit is connected in series between the hybrid circuit and the CAS detector circuit and is provided with at least one inhibiting circuit which has two input ends connected with the first signal line and the second signal line of the hybrid circuit. The output ends of the inhibiting circuit are connected with two input ends of the CAS detector circuit for minimizing the error of identifying the CAS signal by the CAS detector circuit.

Abstract: A device for holding and adjusting the opening angle of a door includes a first lever having a forked end with two generally parallel lugs which are respectively provided with substantially aligned first and second pivot holes, and a second lever which has a journal member for insertion into the first pivot hole, the journal member having a threaded hole and a first engagement surface. A first detent member is inserted between the parallel lugs and has a pivot slot aligned with the first and second pivot holes. The first detent member further includes a second engagement surface for engagement with the first engagement surface, and a detent face. A resilient second detent member is mounted inside the first lever inwardly of the forked end to engage the detent face.

Abstract: A trim phone circuit device is composed of a base portion and a hand set portion which is connected with the base portion by a four-core line. The trim phone circuit device is capable of a calling line identification in view of a bridge rectifier circuit unit which has a positive terminal output capable of providing the telephone circuit with the power source and of reading the calling line information furnished by the phone company. When the bridge rectifier circuit unit of the base portion is turned on all the time to keep a calling line signal in the on-hook state on the phone line, the calling line detection circuit unit of the hand set portion is provided with the calling line signal in a single end input configuration so as to enable the trim phone circuit device to identify the calling line.