Abstract:
The cloth take-up apparatus comprises a driven cloth take-up roller, two deflection elements which are rotatably supported, with the clearance between the deflection elements being less than the diameter of the cloth take-up roller, and a pressing device having a pressing part extending substantially over the length of the cloth take-up roller. The pressing device has at least one positioning device with a toggle lever mechanism and a fixed abutment in order to displace the cloth take-up roller out of a rest position into a working position and to fix it in the latter. With the blocking, the maintenance of the pressing pressure in the operating position is ensured.
Abstract:
A compressor (1) can be connected on the suction side via a suction line (7) provided with an inlet valve (16) to a natural gas line (9) and on the pressure side via an intake line (12) to the gas fuel tank (13) and is also connected via a relief line (10) to a relief valve (11) and a pressure control valve. (25), with said valves being disposed in a pressurized tank (4). This tank is connected to the suction side of the compressor (1) and the outlet sides of the inlet valve (16) and of the relief valve (11) and also with an outlet line (18) via a safety valve (20), which can be set at a predetermined opening pressure of 2 to 3 bar, for example. The pressurized tank (4), is designed with a cover (5) constructed as a support part, on which the compressor (1) is mounted. The compressor (1) can be coupled via a vertical drive shaft (2) with a motor (3) disposed inside the pressurized tank (4). This arrangement permits a simple design of the pressurized tank (4) and a compact construction of ,the appliance, which is particularly intended for refueling motor vehicles.
Abstract:
The compressor comprises at least one high-pressure cylinder and piston unit having a piston which is guided in a cylinder liner and which is coupled with a crankshaft by way of a connecting element guided in the cylinder casing along the longitudinal axis of the cylinder. The piston is coupled with the connecting element by way of a mounting permitting movements of the connecting element relatively to the piston transversely of the longitudinal axis. Guidance of the piston is achieved without affect from oscillations of the connecting. The piston cooperates with the liner to bound a lubricant-free annular gap open over the whole longitudinal portion common to the liner and the piston. A dry gap ring seal can therefore be provided between the piston and the liner and ensures that the compression chamber remains seal tight even at pressures of above 60 bar. Preferably, the piston and the cylinder liner are each made of wear-resistant metal or ceramic material.
Abstract:
To obtain a UF foam which is low in formaldehyde, yet is dimensionally stable, up to 96% urea is dissolved in an approximately 10 to 30% aqueous extract of an alkyl, aryl or alkaryl sulphonic acid, said solution being mixed with a conventional hardener/foaming agent solution containing the sodium salt of an alkyl, aryl or alkaryl sulphonic acid in an aqueous diluent usually employed for foaming, in a ratio sulphonic acid solution to sodium sulphonate solution of 1:1 to 1:4, the pH value being adjusted to 0 up to 3 and said mixture being foamed together with a urea formaldehyde resin precondensate solution in the usual manner.
Abstract:
In the illustrative embodiment, an X-ray tube is attached to a rotary mounting, and the structural elements of the X-ray generator on the high voltage side are disposed on the rotary mounting in an oil-filled tank; for the transfer of energy, a rotating current coupling is provided between the rotary mounting and a stationary energy supply installation, e.g. a mains rectifier. The anode of the X-ray tube is connected to ground potential.
Abstract:
In an exemplary arrangement a rotatable scanning system comprises an X-ray tube which emits a beam of X-rays which penetrates the layer to be examined, and a radiation receiver which supplies electrical output signals corresponding to the measured radiation intensity. A computer is connected to the radiation receiver for calculating the attenuation values of specific image points of the irradiated body layer from the output signals of the radiation receiver. An inductive transformer is provided for transmitting energy to the X-ray tube, its secondary winding being arranged in a fixed position relative to the X-ray tube and rotating with the scanning system and its primary winding being fixed relative to the stationary part of the unit.
Abstract:
For the formation of an electric signal corresponding to the x-ray tube voltage, the high voltage transformer is provided with a low voltage winding. The low voltage at the terminals of the low voltage winding is conducted to the exterior of the tank. Here, a low voltage rectifier circuit is connected which corresponds in its circuit configuration to the high voltage rectifier circuit so that the electric signal supplied by the low voltage rectifier circuit accurately corresponds to the x-ray tube voltage and can be used for control purposes. The high voltage rectifier circuit and the low voltage rectifier circuit can operate as voltage multipliers.
Abstract:
A compound in the form of a metallized tetrpyrollic photosensizer linked to a fluorescent dye where the photosensitizer (PS), is linked by a structure that does not have detrimental radiation emmitance or absorbing characteristics, to a fluorophore, usually a cyanine dye (CD). The photosensitizer in accordance the invention is a metallized analog of porphyrins, chlorins, purpurinimides, bacterio pupurinimides, phthalocyanines, expanded porphyrins, benzoporphyrin derivatives and purpurins. The fluorophore is usually a cyanine dye with varaible substituents. And, A method for determining effectiveness of PDT by comparing proportion of STAT-3 monomer with crosslinked STAT-3 dimer after PDT where the relative proportion of STAT-3 monomer to crosslinked STAT-3 directly correlates to efficacy of the PDT.
Abstract:
The invention relates to a horse snaffle bit with two lateral parts and a shackle, which is situated between these parts and comprises at least one joint and two lateral sections, each lateral section having an end located a distance from the joint and a borehole is made in these distal ends of the lateral sections to accommodate one of the parts in a manner that enables them to move freely. Additionally, each lateral section has a first surface area and a second surface area; the first surface area has a matte surface and extends from the joint to a distance of at least 20% and no greater than 50% of the overall length of the lateral section from the joint, and the second surface area has a high-lustrous surface and is connected to the first surface area and extends to the distal end of the lateral section.
Abstract:
A positioning device for an X-ray detector or an X-ray source is provided. The positioning device includes an arched arm, inside of which the X-ray detector or the X-ray source can be mounted in a manner that enables the detector or source to be displaced in the direction of the arch. The positioning device includes a base, inside of which the arched arm is mounted in a manner that enables the arched arm to be displaced in the direction of the arch. Either the X-ray detector is mounted in the positioning device and the X-ray source is placed separately therefrom or, conversely, the X-ray source is mounted in the positioning device and the X-ray detector is placed separately there from.