Abstract: A pair of members which are expandable and contractible with temperature have a flexible expansion joint therebetween. A first body is attached to one of the members and carries an elongated support having a pair of indicators slidably mounted thereon. The indicators frictionally engage the support so that they move only in response to movement of the spaced members. A second body is attached to the other of the members and has a slot therein through which the support freely extends. The indicators have an outer dimension greater than the width of the slot. The second body has opposite faces which engage the indicators.

Abstract: A sample inlet apparatus comprises a sample source (1) and a first enclosure (3), connected to the sample source via a first inlet (2). An analyser enclosure (7) is connected to the first enclosure (3) via a second inlet (5,15) substantially in alignment with the first inlet (2). Also provided is a second enclosure (10), connected to the analyser enclosure (7) via a third inlet (9) substantially in alignment with the first (2) and second (5,15) inlet, and vacuum pumps (4,11) for maintaining the first (3) and second enclosures (10) at a pressure lower than the sample source (1) and higher than that of the analyser enclosure (7) in use, whereby a molecular beam of sample molecules is generated along the axis of the inlet.

Abstract: In a metallic pipeline (1) disposed in the ground, voltages may be induced from adjacent transmission lines and cause corrosion. To reduce the risk of corrosion, voltages are induced in the pipeline with the aid of a transformer (8), which voltages counteract the induced voltages. A measuring conductor (2) provides a signal which is a measure of the induced voltage. In a suitable way, this signal controls the amplitude and phase position of a voltage (U.sub.1) which is generated by a converter coupling (7) and is applied to the primary winding of the transformer (8). (FIG.

Abstract: A fuel assembly and a spacer for a boiling reactor comprises an elongated fuel channel which is connected to a coolant intended to flow therethrough. In the fuel channel there is arranged a bundle of also elongated fuel rods retained by a plurality of spacers. The spacers have an external spacer frame which is provided all around with a plurality of openings. There is arranged, at the inside of the spacer frame, an edge which is obliquely positioned in relation to the longitudinal direction of the fuel assembly and which extends in an inclined manner in a direction downstream of the spacer and toward the corner of the spacer to deflect coolant to the fuel rods arranged at these corners.

Abstract: In a calibration method for an industrial robot (2-6), a calibration tool (8) supported by the robot hand (6) is brought into contact with pairwise opposite side surfaces of a calibration body (7) with a known edge length. Thereafter, the output signals from the position transducers of the robot axes are read and stored. This method is repeated a plurality of times with different robot configurations. Thereafter, the calibration parameters of the robot are calculated starting from the kinematic equations of the robot, a model of the relationship between axial position and position transducer signal, the known edge lengths of the calibration body, and the read and stored position transducer signals. (FIG.

Abstract: A bulding system for building movables formed one or more individual parts and modules. The module system is constructed on a frame (1) formed of four profiles (2, 3, 4, 5) which are joined in order to form a rectangle (7). Mounted on the frame are supporting rails (8) in which base cabinets (9) may be hung and table tops (10) may be mounted. By means of further devices which interact with the frame, it is possible to extend the system to provide top cabinets. Furthermore, the system may be equipped with technical installations and other utilities for use in connection with the work at the system, and the system may be equipped with covering, side and base panels.

Abstract: Apparatus and method for detecting air flow at the mouth and nose of a subject, including a transducer for converting electrical signals into ultrasound waves and vice versa, means for directing the ultrasound waves toward the mouth and nose of the subject and receiving return waves, and a detector to analyze electrical signals converted by the transducer from the return ultrasound waves.

Abstract: A clipping circuit is coupled across the bass feedback shunt capacitor in an amplifier circuit to effectively reduce only high level bass signals while allowing level high frequencies to pass and allowing full boost to low level, low frequency signals.

Abstract: A high performance radial anisotropic cylinder-shape ferrite magnet for use in a motor to lower its noise and enable miniaturization thereof is formed of an integrated one-piece body formed of sintered Sr and/or Ba ferrite powders and has an axially-extending slit that is created before the body is sintered to reduce internal stress due to shrinkage. The slit can extend in parallel to both the axial and radial directions of the body, diagonally to both the axial and radial directions, or diagonally to the radial direction and parallel to the axial direction. The slit can be filled with a resin material.

Abstract: A miniaturized biological assembly provides a miniature capillary environment in which a liquid medium containing microscopic-size particulate material can be placed for study under a microscope. The assembly includes components which do not wet relative to the liquid medium. A sample chamber and second chamber are disposed adjacent one another to allow a selective exchange of material, such as nutrients, between the two chambers. The assembly provides an environment that can contain the liquid medium and material for a period of time sufficient to enable observation while preventing deterioration of the medium and material.

Abstract: In the manufacture of reinforced composites having reinforcing filaments within a matrix, a filament consisting of a staple yarn spun from discontinuous fibers with low twist is subject to controlled stretching to vary the weight per unit length of the yarn along the length of the yarn. Apparatus for performing the stretching operation comprises two roll pairs spaced apart along the yard feed path and rotated at controlled relative speeds to obtain the desired elongation of the yarn. The yarn may be used directly in producing a composite, e.g., by applying resin to the yarn and winding it onto a mandrel or former, or it may be used to prepare a perform, prepeg tape, woven fabric or the like to be used in the production of a shaped composite. The invention makes it possible to vary the characteristics, e.g., thickness and/or strength, over a composite in a way not previously possible.

Abstract: The invention relates to fused ceramic beads, which have the following chemical composition in % by weight on the basis of the oxides:40 to 95% of ZrO.sub.2 and HfO.sub.2 ;at least one of Y.sub.2 O.sub.3 and CeO.sub.2, with the provisos that Y.sub.2 O.sub.3, when present, represents 0.1 to 10% and CeO.sub.2, when present, represents 1 to 25%, the total of Y.sub.2 O.sub.3 and CeO.sub.2 representing 0.1 to 25%;a quantity of SiO.sub.2 representing 10 to 45% of the composition when CeO.sub.2 is absent from the composition and 0.5 to 45% when CeO.sub.2 is present in the composition. Application to grinding and to dispersion in wet medium is provided.

Abstract: A hand-held marking device comprises an electrically actuated writing head for making marks on a writing surface and a sensor for detecting when the writing head is moving in any direction in a plane parallel to the surface. The device includes a mechanism for causing the head to be actuated when the sensor detects relative movement of the writing head and the surface. The writing head can be arranged to be able to make a plurality of different types or sizes of marks on a writing surface, in which case a mechanism is provided for selecting which of the different mark types or sizes is to be made.

Abstract: A chair leg assembly includes a tubular sleeve member rotatably mounted around a lower end of a seat post of a chair, three extension legs each having a first end fixedly mounted to the tubular sleeve member, three support members each horizontally formed on a second end of a corresponding one of the extension legs, six pivot members each rotatably mounted on an underside of a corresponding one of distal ends of each of the support members, three pairs of wheels each pair rotatably mounted on an underside of a corresponding one of the pivot members.

Abstract: The invention discloses an accumulator container comprising a box (2) presenting one or more element-containing cells (3), each of said cells presenting at least one tube (5) for the inlet of the electrolyte. Said tube (5) has one end connected with an opening (6) made in the lid and its other end arranged near the bottom of the container. Said box presents a lid having at least one first inlet opening (6), connected through channels (71, 72, 73, 74, 75, 76) for the distribution of the electrolyte with electrolyte inletting tubes (5, 51), found in the box and in the lid, and at least one second outlet opening (11) connected with level tubes (81), each belonging to each cell.

Abstract: In a device for determining the concentration of a reagent from a group consisting of gases with acid or alkaline reaction in aqueous environments, and volatile acids and bases in liquid or gaseous samples, a sample chamber is situated in a housing and a unit for pH measurement with a reaction space is separated from the sample chamber by an ion-impermeable, gas-permeable membrane. The feeding of the reaction space with buffer solution is facilitated by connecting the reaction space by means of an ion-permeable channel to a reservoir for a buffer solution located outside of the pH measuring unit.

Abstract: Non-invasive apparatus for accelerating the process of jawbone healing and regeneration, reattachment of traumatically loosened teeth to the jawbone, or osseointegration of implants in a patient, including at least one piezoelectric transducer and connections to transmit ultrasonic frequency electrical current to the piezoelectric transducer. The ultrasonic frequency electrical current transmitted to the piezoelectric transducer causes the transducer to contract and expand volumetrically in response to a changing electrical field to generate pressure wave vibrations of ultrasonic frequency that are coupled to the bone.

Abstract: A measuring and dispensing device for granular powder materials as disclosed. The device includes a first element having a holding chamber and a collecting chamber joined by an interconnecting wall having an opening. A second element is located within the first element and has an outer wall which faces an inner wall of the first element for defining a dispensing duct. The second element has a measuring chamber having an open bottom and another opening connected with the first opening of the first element. A lid applied to the upper part of the first element and has an opening communicating with the dispensing duct to allow for the dispensing of product. The first and second elements have wall portions that converge towards the bottom.