Abstract: A floor repair kit (1) for repairing a damaged area (22) on a flooring material (21). To use, a user first adds tint (6) to a filler (9) to create a tint/filler mixture (26). Then, the user adds a hardener (15) to the tint/filler mixture (26) to create a tint/filler/hardener mixture (27). The tint/filler/hardener mixture (27) is then applied to a damaged area (22) on a flooring material (21) and permitted to harden. A protective material (14) is secured over the hardened tint/filler/hardener mixture (27) and over an area of the flooring material (21) surrounding the damaged area (22). The protective material (14) located over the hardened tint/filler/hardener mixture (27) is cut to expose the hardened tint/filler/hardener mixture (27) and the exposed hardened tint/filler/hardener mixture (27) is then sanded. Finally, the user removes the protective material (14) from the flooring material (21) to reveal a repaired floor (28).

Abstract: The present invention ameliorates the problem in a plasma reactor of plasma attacking an electrostatic chuck and the wafer periphery backside by placing a magnet in the quartz wall adjacent the wafer peripheral edge.

Abstract: A method for purging and passivating a vacuum chamber suitable for use in the production of integrated circuit structures on semiconductor wafers. The method includes flowing a heated, non-reactive gas, such as argon gas, through the chamber for purposes of decontaminating the chamber and subsequently filling the chamber with a selected gas such as nitrogen to passivate the chamber for storage or shipping purposes.

Abstract: A method for purging a vacuum chamber suitable for use in the production of integrated circuit structures on semiconductor wafers. The method comprises providing the chamber to be purged and flowing a heated, non-reactive gas, such as argon gas, through the chamber. The non-reactive gas is heated to a temperature of at least 90.degree. C. Further, the chamber is heated to maintain it at a temperature of at least 90.degree. C. while flowing the gas therethrough. Flowing the heated non-reactive gas through the chamber causes released impurities or contaminants to be efficiently swept from the chamber in the non-reactive gas flow. After flowing the heated gas through the heated chamber, the flow of gas is interrupted and the chamber, while still hot, is pumped down to a vacuum of about 5.times.10.sup.-7 to determine whether or not the chamber has a leakage problem.

Abstract: The present invention ameliorates the problem in a plasma reactor of plasma attacking an electrostatic chuck and the wafer periphery backside by placing a magnet in the quartz wall adjacent the wafer peripheral edge.

Abstract: A pocket sized portable information device provides an alarm indicating Moslem prayer times. Means are provided for entering information identifying geograpical location, from which the hours of sunrise and sunset are calculated and then the prayer times. The device includes an oscillator driving a clock calendar and an interrupt time both of which are linked to a microprocessor. Codes identifying geographical locations are input via suitable key pads, resulting in geographical co-ordinate information being supplied to the microprocessor from a location ROM. By means of suitable algorithms the microprocessor calculates sunrise, sunset and the prayer times, and at the appropriate times provides an audible alarm through an amplifier and a transducer (T). The device is also provided with a compass identifying the direction towards magnetic north. Using the information from the location ROM the microprocessor calculates the deviation from magnetic north to the direction towards Mecca for the location concerned.

Abstract: There is disclosed an electrical circuit arrangement for phase-synchronizing a first pulse train with a second pulse train, in which the algebraic phase difference between each pulse of one pulse train and the next pulse of the other pulse train is measured for each of a predetermined number of pulses of one of the pulse trains. The algebraic average phase difference is then determined over the said predetermined number of pulses, and the absolute phase of the pulses of the first pulse train is then adjusted in correspondence with the average phase difference so as to bring the two pulse trains closer into phase equality.

Abstract: There is disclosed an electrical circuit arrangement for phase-synchronizing a first pulse train with a second pulse train, in which the algebraic phase difference between each pulse of one pulse train and the next pulse of the other pulse train is measured for each of a predetermined number of pulses of one of the pulse trains. The algebraic average phase difference is then determined over the said predetermined number of pulses, and the absolute phase of the pulses of the first pulse train is then adjusted in correspondence with the average phase difference so as to bring the two pulse trains closer into phase equality.