Abstract: In embodiments of the present invention, an ultrasound system includes an ultrasound machine, which may be located in a hospital, clinic, vehicle, home, etc., coupled to a remotely located diagnosis station via a communication network. For some embodiments, the ultrasound machine includes an application-specific scan head that has identification information that allows the home ultrasound machine to notify a user whether the attached scan head is appropriate for the type of examination to be performed. For other embodiments, a first stage of beamforming is conducted in reconfigurable hardware and a second stage of beamforming is conducted in programmable software digital signal processor.

Abstract: A device and a method for preventing vibrations (19) in a rotating spindle (1) mounted in at least one front 8 and one rear bearing (9) in a machine tool, wherein the device comprises measuring units (2, 3, 4, 5) for detecting the vibrations (19) and correction means (6) for preventing the vibrations (19) disposed directly about the periphery (10, 11) of the spindle (1) in a contacting or non-contacting manner and that a control unit (7) for processing the measuring units (2, 3, 4, 5) and for calculating the correction values for the correction means (6) is assigned to this device.

Abstract: In one embodiment, a computer-implemented method for transforming a CAD model of an object between engineering states includes generating a first reference geometry to represent a first engineering state. A parametric CAD model of the object may be generated to represent the object in the first engineering state by constructing the parametric CAD model as having dependence on the first reference geometry. A second reference geometry may be generated to represent a second engineering state. The parametric CAD model may be regenerated to represent the object in the second engineering state by replacing the first reference geometry with the second reference geometry.

Abstract: A shaft cooler (1) for a tool motor spindle (1), which has a rotating shaft (3), a static lance (4), and at least one coolant loop (7), which comprises a coolant inlet (5) and a coolant outlet (6), said shaft cooler being implemented such that the introduction of the coolant into the static lance (4) is performed via cooling holes (8) from the inside to the outside in the rotating shaft (3).

Abstract: The Safety, Power and Shade Device is a system usable with wheelchairs providing an upright and horizontal frame attachable by brackets to a wheelchair seat back. The frame allows for the installation of safety and illumination lights, a solar panel for supplemental recharging of an electric wheelchair battery and a mean of shelter or shade. The frame assembly is constructed to allow the horizontal frame to fold over and behind the wheelchair for a vertical relationship with the frame upright.

Abstract: A clothes hanger with a pants holding device comprising a shoulder contour segment with a hook, a cross bar between the arms of the shoulder contour segment and a flexible spring element which is attached to the pants holding device. The spring element extends somewhat parallel to the cross bar and is held in place by means of interlocking openings. The spring element can be moved between a release position and a clamping position, wherein the pants are firmly clamped between the cross bar and the spring element in the clamping position. In order to design the pants holding device with an economy of means and long-lasting efficiency, to securely retain the spring element in the clamping position and in the release position and to enable troublefree switching of the spring element from one position to the other, the ends of the spring element are held in the interlocking openings by forming a joint having a substantially stationary rotating axis.

Abstract: An elastic fastening ring that can be mounted in a self-clamping manner on a bearing part should have a simple design, a reliable operation and at the same time the function of an axial spring element. For this purpose, the disclosed fastening ring consists of a washer with a sinuous ring-shaped band whose length may be elastically changed in the circumferential direction over its whole radial width.

Abstract: A method for the recovery of glycols from used antifreeze compositions by distillation entails the used antifreeze composition being treated before and/or during its distillation with an effective amount of sulfamic acid.

Abstract: Improved cementitious compositions having increased flexural, tensile and shear-bond strength, increased wear resistance, decreased water permeability and enhanced workability than previous cement compositions, which are prepared with water treated with an emulsified tar component, and preferably a residual amount of sodium tripolyphosphate, are provided. Methods of forming shaped articles therefrom are also provided.

Abstract: Improved cementitious compositions having increased flexural, tensile and shear-bond strength, increased wear resistance, decreased water permeability and enhanced workability than previous cement compositions, which are prepared with water treated with an emulsified tar component, and preferably a residual amount of sodium tripolyphosphate, are provided. Methods of forming shaped articles therefrom are also provided.

Abstract: Improved cement compositions having greater strength, density, and lesser porosity, than concretes previously known are provided, which are prepared with water which been treated so as to comprise a residual amount of sodium tripolyphosphate. Methods of forming high-strength shaped articles are also provided.

Abstract: Alpha,beta-unsaturated ketones of the formula (I) ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, alkyl, alkenyl of 1 to 12 carbon atoms, cycloalkyl, aryl, aralkyl or alkylaryl, are prepared by converting the corresponding .alpha.-hydroxy, alkoxy or carboxy compound in the presence of an acidic catalyst.Preferred starting materials are 3-methyl-3-hydroxy-butan-2-one, 3-methyl-3-hydroxypentan-2-one and 3-pentamethylene-3-hydroxypropan-2-one, and preferred catalysts are zeolites of the pentasil type.

Abstract: Unsaturated ketones of the formula ##STR1## and saturated ketones of the formula ##STR2## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, alkyl of 1 to 12 carbon atoms or a cycloalkyl, aryl, aralkyl or alkylaryl radical which inturn may be substituted, or R.sup.1 and R.sup.3 or R.sup.2 and R.sup.3, together with the carbon atoms to which they are bonded, may form a cycloalkane, are prepared by a process in which a 5-methylene-1,3-dioxolanone which is substituted in the 4-position and is of the forumla ##STR3## where R.sup.1, R.sup.2 and R.sup.3 have the above meanings, (a) for the preparation of an unsaturated ketone, is converted in the presence of a zeolite, of a phosphate having a zeolite structure and/or of B, Ce, Fe, Zr or Sr phosphate as catalysts and (b) for the preparation of a saturated ketone, is converted in the presence of the same catalysts which additionally carry one or more hydrogenation components.

Abstract: Ketones of the formula ##STR1## where R.sup.1 to R.sup.3 are each hydrogen and R.sup.1 to R.sup.4 are each alkyl of 1 to 12 carbon atoms, cycloalkyl of 4 to 8 carbon atoms, aryl, aralkyl or alkylaryl, which each in turn may be substituted, or R.sup.1 and R.sup.2 and R.sup.3 together with the carbon atoms to which they are bonded form a cycloalkane, are prepared by reacting ketones of the formula ##STR2## where one of R.sup.1, R.sup.2, R.sup.3 and R.sup.5 is hydroxyl, alkoxy or carboxyl while the remaining R.sup.1 to R.sup.4 have the abovementioned meanings, with hydrogen in the presence of acid catalysts supporting one or more hydrogenation components, zeolites of the pentasil type being particularly suitable.

Abstract: 1,4-Diazabicyclo[2.2.2]octane and C-substituted 1,4-diazabicyclo[2.2.2]octanes of the formula (I) ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or alkyl or alkenyl, each of 1 to 4 carbon atoms, are prepared from a heterocyclic amine of the formula (II) ##STR2## where R.sup.1 and R.sup.2 have the above meanings, R.sup.3 is hydrogen, hydroxyethyl or aminoethyl and X is hydroxyl or amino, in the presence of borosilicate and/or iron silicate zeolites as catalysts. Particularly suitable catalysts are the borosilicate and iron silicate zeolites of the pentasil type.

Abstract: In a particularly time-saving and economical process for deliming hides, a cyclic ester of sulfurous acid with an aliphatic 1,2-diol is used as the deliming agent.

Abstract: Concentrated aqueous solutions of quaternization products of tertiary aminoalkyl esters or tertiary aminoalkylamides of acrylic or methacrylic acid are prepared by reaction of the corresponding esters or amides with an alkylating agent in a water-soluble ketone as solvent, by a process wherein, in order to isolate the quaternization product, an amount of water is added to the reaction mixture such that two phases form, and the lower aqueous phase, which contains the quaternization product in solution, is separated from the upper phase, which contains the ketone and residual alkylating agent.

Abstract: A hose of rubber material with a reinforced hose wall for conveying in wet condition large volume sharp-edged solid materials while the inner wall of the hose utilizes a rubber layer as protection against wear. Metallic bodies are embedded in and adhering to the rubber layer and have substantially the same thickness as the rubber layer.

Abstract: Arylacetic acids and their esters, of the formula Ar(CH.sub.2 -COOR).sub.n (where Ar=aryl, R is H or a hydrocarbon radical, and n is 1 or 2) are manufactured by carbonylation of halomethylaryl compounds Ar(CH.sub.2 C).sub.n (where X is Cl, Br or I) with carbon monoxide and a catalyst m.sup.+ ?Fe(O).sub.3 NO!.sup.- (where M is an alkali metal, ammonium or one equivalent of an alkaline earth metal) in the presence of stoichiometric amounts of an inorganic base or of an alcoholate of an alcohol ROH.

Abstract: Compounds of the formula I ##STR1## where R is a polyethylene glycol radical of 3 to 60 chain members or a polypropylene glycol radical of 3 to 60 chain members or the radical of an ethylene oxide/propylene oxide block polymer of average molecular weight from 300 to 8,500, and R' is straight-chain or branched alkyl of 1 to 10 carbon atoms, or benzyl.