Abstract: The invention includes a method and apparatus supporting system specification creation by providing descriptor management functions. A method according to one embodiment of the invention includes receiving a request for descriptor information maintained in a descriptor dictionary comprising a plurality of descriptor entries defining a respective plurality of descriptors, determining a context associated with the request for descriptor information, retrieving a subset of the descriptor entries of the descriptor dictionary according to the determined context, and inserting into a presentation data stream imagery associated with the subset of descriptor entries to enable selection of one or more of the descriptor entries for insertion of the corresponding descriptor within a worksheet.

Abstract: The invention includes a method and apparatus for displaying a graphical representation of a graph including nodes and edges. A layout of the graph is determined. The layout of the graph is determined by determining respective positions of each of the nodes and edges within the layout. The position of each node is determined using a first model and, optionally, a second force model, wherein the first force model comprises a substantially linear repulsive force in a first region, a substantially exponential repulsive force in a second region, and an attractive force in a third region. In one embodiment, the position of each edge may be determined using the first force model. A graphical representation of the layout is generated. The graphical representation of the layout is displayed to one or more users.

Abstract: For connecting flexible corrugated hoses, which are not provided with fittings, for transporting preferably gaseous media in connection with high-pressure applications, a holder 3 is provided, which receives an exposed end of the corrugated pipe 6 of the flexible corrugated hose 2 and is pressed together with it to form a metallic seal. The metallic seal is achieved by the surface pressure between the interior wall 18 of an element 16 of the holder and the ribs 8 of the corrugated pipe 6. Elastomeric seals 24, 25, as well as a soldering joint 34, if desired, can be provided as aids. However, in connection with a preferred embodiment the required sealing is already achieved by the strong pressure against each other of the metallic exterior of the corrugated pipe 6 and the metallic interior of the element 16.

Abstract: A method is provided for generating test cases automatically using an abstract system description in combination with a model-checking tool. The abstract system description can be used to design hardware/software systems and the generated test cases can be reused to verify the correctness of the implementation.

Abstract: The invention relates to an electromagnetic relay with an electromagnetic coil for exciting a magnetic field and an iron circuit for guiding the magnetic field, wherein the electromagnetic coil surrounds at least part of the iron circuit and the iron circuit comprises a core, a movable armature and a yoke. The electromagnetic relay further comprises a contact system with a movable contact bridge which can be actuated dependent on the magnetic field. In order to provide an electromagnetic relay that is able to disconnect or connect a plurality of electric contacts simultaneously in a particularly secure and loss reduced manner, according to the present invention there are provided at least three electric contacts on the contact bridge. According to an advantageous embodiment, the contact system comprises three fixed contacts which are corresponding each to one of three phases and the contact bridge forms a star point of the three phases.

Abstract: A flexible corrugated hose fitting, which is particularly provided for high-pressure installations, such as air conditioning installations using CO2 as the refrigerant, has a connecting element, which can be snapped together with the interior corrugated pipe of the flexible corrugated hose. In addition, the connecting element has sealing elements, which come into sealing contact with the corrugated pipe. Following the area receiving the sealing elements, the connecting element has a cone, which is used as a clamping section. An exterior squeeze ring, or other squeeze element, is used for pressing the exposed end of the corrugated pipe against the clamping section. A pressing sleeve is used for pressing, which drives the squeeze ring by a wedge effect inward. It has an appropriate conical interior surface. The squeeze ring moreover extends over the sheathing. For further securing of the connection, the pressing sleeve can be pressed together here with the sheathing by an appropriate deformation.

Abstract: The invention relates to an electromagnetic relay with an electromagnetic coil for exciting a magnetic field and an iron circuit for guiding the magnetic field, wherein the electromagnetic coil surrounds at least part of the iron circuit and the iron circuit comprises a core, a movable armature and a yoke. The electromagnetic relay further comprises a contact system with a movable contact bridge which can be actuated dependent on the magnetic field. In order to provide an electromagnetic relay that is able to disconnect or connect a plurality of electric contacts simultaneously in a particularly secure and loss reduced manner, according to the present invention there are provided at least three electric contacts on the contact bridge. According to an advantageous embodiment, the contact system comprises three fixed contacts which are corresponding each to one of three phases and the contact bridge forms a star point of the three phases.

Abstract: A plug connection device (1), in particular for securing and tightening fluid couplings (11), has a holding device with a holder (14), a plug-in element (26) and an extension spring element in the form of an annular extension spring (23). The annular extension spring (23) acts as a wedge between an annular surface (32) formed on the plug-in element (26) and an annular rim (19) formed on the holder (14). The annular extension spring (23) can perform a rolling movement around its chord center axis (24). A particularly low static friction is present here because of the support of the annular extension spring (23) on the annular rim (19), which permits a continuous automatic re-tightening of the holding device (12).

Abstract: A flexible corrugated hose fitting 1, which is particularly provided for high-pressure installations, such as airconditioning installations using CO2 as the refrigerant, has a connecting element 11, which can be snapped together with the interior corrugated pipe 5 of the flexible corrugated hose 3. In addition, the connecting element 11 has sealing elements 23, 24, which come into sealing contact with the corrugated pipe 5. Following the area receiving the sealing elements 23, 24, the connecting element 11 has a cone 26, which is used as a clamping section. An exterior squeeze ring 34, or other squeeze element, is used for pressing the exposed end of the corrugated pipe against the clamping section 26. A pressing sleeve 38 is used for pressing, which drives the squeeze ring 36 by a wedge effect inward. It has an appropriate conical interior surface 42. The squeeze ring 34 moreover extends over the sheathing 8.

Abstract: For connecting flexible corrugated hoses, which are not provided with fittings, for transporting preferably gaseous media in connection with high-pressure applications, a holder 3 is provided, which receives an exposed end of the corrugated pipe 6 of the flexible corrugated hose 2 and is pressed together with it to form a metallic seal. The metallic seal is achieved by the surface pressure between the interior wall 18 of an element 16 of the holder and the ribs 8 of the corrugated pipe 6. Elastomeric seals 24, 25, as well as a soldering joint 34, if desired, can be provided as aids. However, in connection with a preferred embodiment the required sealing is already achieved by the strong pressure against each other of the metallic exterior of the corrugated pipe 6 and the metallic interior of the element 16.

Abstract: A hose for transporting preferably gaseous media at high temperatures and under high pressure has a corrugated interior surface with depressions and elevations, and at least one insertion element that can be inserted in one end. The hose is characterized in that, in the region of contact between the interior surface of the hose and the exterior surface of the insertion element, at least one gasket element of crystalline material is provided. The gasket element is metal, preferably a lead or copper alloy.

Abstract: A widening device for increasing the width of a moving web of material comprises a rotatable profiled roller, the outer surface of which defines a plurality of radial projections and recesses distributed along the length of the roller and first and second co-operating rollers rotatable at the same speed as the profiled roller. The first and second co-operating rollers define projections and recesses complementary to those of profiled roller and define first and second treatment nips which serve to increase the width of a web of material passed therethrough. The projections on the co-operating roller defining the second treatment nip extend more deeply into the recesses of the profiled roller than do the projections on the co-operating roller which defines the first treatment nip so that the web of material is stretched gradually over two stages with the stretching effect being uniform across the entire width of the web.

Abstract: An apparatus for the mechanical needling of pile fabrics onto a winding frame comprising a pair of rotatable suspension frames located at opposite ends of an axle and including radially disposed rows of fabric engaging hooks movable parallel to the axle, actuating means for moving the individual hooks toward the opposite end of the axle in sequence beginning with the radially innermost hooks and progressing to the radially outermost hooks in synchronization with the rotation of the suspension frames, the actuating means including ejector means rotatable with the suspension frames and cam means selectively movable into the path of movement of the ejector means for selectively moving the individual hooks toward the opposite end of the axle.

Abstract: A take-up frame for pile fabric consisting of two suspension frames mounted on opposite ends of a cylindrical shaft, each frame comprising a plurality of angularly spaced arms projecting radially from a central hub. Each of the arms has a narrow slot formed in the side facing away from the other frame. The slot extends lengthwise of the arm and extends only part way through the thickness of the arm. A plurality of slot-like apertures extends through the remaining thickness of the arm from the bottom of the slot to the other side of the arm. The slot-like apertures are spaced apart equidistantly from one another along the length of the slot. Inserted into the slot is a hook band consisting of a plurality of hooks joined together and spaced apart from one another the same distance as the space between the slot-like apertures. Each of the hooks passes through its respective slot-like aperture and projects from the other side of the arm, where it is adapted to hook onto the edge of the pile fabric.

Abstract: A take-up frame for pile fabric comprising two suspension frames disposed at the ends of a shaft in accordance with the width of fabric webs to be taken up and provided with hook bands which extend radially and into which the fabric webs are hooked, wherein the suspension frames are constructed of plastics material or the like and are provided with guideways in which hook bands of metal are disposed.