Abstract: A propylene block copolymer with a high proportion of ethylene-propylene copolymer particles (rubber component) well dispersed in a propylene polymer exhibiting well-balanced rigidity and impact resistance can be obtained by using a solid catalyst for polymerization of olefins comprising (a) a solid catalyst component with controlled morphology, comprising magnesium, titanium, and a halogen atom, having an average particle diameter, specific surface area, and pore volume in a specific range, and having a pore size distribution in which an cumulative pore volume with a pore size of 100 Å or less is more than 50%, (b) an organoaluminum compound, and (c) an organosilicon compound. The block copolymer is very useful particularly for the application of vehicle parts such as a bumper and parts for household electric appliances.

Abstract: A semiconductor differential pressure measuring device comprising two measurement diaphragms and two detection sensors provided in a semiconductor substrate using micromachining techniques, and a computing circuit which computes the differences between the two sensor outputs, wherein a communicating hole is provided for applying pressure to each diaphragm so that the diaphragms operate in opposite phases by differential pressure, and two detecting sensors are provided on each diaphragm for detecting displacement or strain of each diaphragm caused by the differential pressure applied to the respective diaphragm, whereby detecting the differences in displacement or strain cancels the static pressure error and temperature error so that the invention has excellent temperature and static pressure characteristics, and whereby the computing circuit comprises a bridge using the two detecting sensors, which substantially reduces the cost of the device.

Abstract: A semiconductor type differential pressure measurement apparatus is disclosed comprising a measuring diaphragm having its periphery fixed, and two measuring chambers, each having a predetermined spacing along both surfaces of the measuring diaphragm, and which detects differential pressure within allowable limits of measurement. When an overpressure is applied, the diaphragm is stopped by a wall of a measuring chamber to prevent the diaphragm from being damaged by overpressure, so that no additional mechanism is required to prevent damage from overpressure. One embodiment utilizes an additional chamber and overhang to reduce overpressure. Another embodiment utilizes a measuring chamber having the two sides of the diaphragm exposed to the ambient to eliminate need for a pressure resistant casing. In a further embodiment, injected impurities serve as a terminal.

Abstract: The present invention is directed to a technique which comprises the steps of stopping the rotation of a treating drum in a deodorizing step, introducing the outside air into a treating tank through an upper opening provided in the upper portion of the treating tank or the upper portion of a recovery air duct, simultaneously exhausting a solvent gas from the treating tank through a lower opening provided in the lower portion of the treating tank or a button trap portion so slowly as not to agitate the solvent gas in the treating tank by an exhaust means connected to a solvent recovery device in the condition that the treating drum is stopped, in order to replace the solvent gas in the treating tank with the outside air, and reusing the solvent gas through the solvent recovery device once or several times. In addition, the present invention is further directed to an improvement of the above-mentioned technique.

Abstract: A vibrating type pressure measuring device having good shock wave proof measuring characteristics, high frequency response, good temperature characteristics, and can be readily miniaturized, wherein pressure to be measured is applied to a silicon diaphragm provided in an internal vacant space of a housing, and a magnetic field is applied by a DC current magnetic field applying device to a vibrator beam arranged in the inside of the diaphragm, with a gap therebetween kept in vacuum, and fixed to the diaphragm at both ends, and detects the changes in natural frequency of the vibrator beam caused by the pressure to be measured. The diaphragm and/or vibrator beam are constructed so one or the other or both have rough or uneven surfaces so as to prevent any adhesion therebetween.

Abstract: The present invention is directed to a technique which comprises the steps of stopping the rotation of a treating drum in a deodorizing step, introducing the outside air into a treating tank through an upper opening provided in the upper portion of the treating tank or the upper portion of a recovery air duct, simultaneously exhausting a solvent gas from the treating tank through a lower opening provided in the lower portion of the treating tank or a button trap portion so slowly as not to agitate the solvent gas in the treating tank by an exhaust means connected to a solvent recovery device in the condition that the treating drum is stopped, in order to replace the solvent gas in the treating tank with the outside air, and reusing the solvent gas through the solvent recovery device once or several times. In addition, the present invention is further directed to an improvement of the above-mentioned technique.

Abstract: The present invention is directed to a technique which comprises the steps of stopping the rotation of a treating durm in a deodorizing step, introducing the outside air into a treating tank through an upper opening provided in the upper portion of the treating tank or the upper portion of a recovery air duct, simultaneously exhausting a solvent gas from the treating tank through a lower opening provided in the lower portion of the treating tank or a button trap portion so slowly as not to agitate the solvent gas in the treating tank by an exhaust means connected to a solvent recovery device in the condition that the treating drum is stopped, in order to replace the solvent gas in the treating tank with the outside air, and reusing the solvent gas through the solvent recovery device once or several times. In addition, the present invention is further directed to an improvement of the above-mentioned technique.

Abstract: An apparatus for automatic identification and couting of a large number of returned or collected used linens at once by recognizing the shapes of markers that are opaque to X-rays and attached thereto. By numerically processing the shadow images of the markers projected onto an X-ray detector, a many kinds of linens can be identified and counted according to classification instantaneously.

Abstract: The present invention relates to a dry cleaning method in which tanks for exclusively receiving at least two kinds of solvents which are soluble in each other are provided. One treating tank and a fractionating device for recovering the two or more kinds of solvents by fractonal distillation are provided. Exclusive filters for the respective solvents are provided through the use of, a common filter or a multi-filter device composed of both the filters which is disposed between the tanks and the treating tank. The two or more kinds of solvents are used independently so that washing is carried out.

Abstract: The present invention relates to a dry cleaning apparatus in which a main portion of a dry cleaner comprises tanks for exclusively receiving at least two kinds of solvents which are soluble in each other, one treating tank and a fractionating device for recovering the two or more kinds of solvents by batch distillation, exclusive filters for the respective solvents comprising, a common filter or a multi-filter device composed of both the filters, and the two or more kinds of solvents are used independently so that washing is carried out.