Abstract: A piston assembly for an internal combustion engine includes a cylinder bore and a piston having exactly two ring grooves, a scraper ring positioned in the upper ring groove, and an oil control ring positioned in the lower ring groove. A constant twist occurs in the scraper ring about a rotational center of the cross-section, the constant twist occurring at each cross-sectional location of the scraper ring about the circumference of the ring and between adjacent free ends of the ring. The oil control ring can be of a multi-segmented U-flex design, with a coil spring mounted in a channel thereof. The combination of the two rings leads to improved sealing and oil control so that the piston can be manufactured with only two rings, thus reducing overall weight and cost.

Abstract: A piston assembly for an internal combustion engine includes a cylinder bore and a piston having exactly two ring grooves, a scraper ring positioned in the upper ring groove, and an oil control ring positioned in the lower ring groove. A constant twist occurs in the scraper ring about a rotational center of the cross-section, the constant twist occurring at each cross-sectional location of the scraper ring about the circumference of the ring and between adjacent free ends of the ring. The oil control ring can be of a multi-segmented U-flex design, with a coil spring mounted in a channel thereof. The combination of the two rings leads to improved sealing and oil control so that the piston can be manufactured with only two rings, thus reducing overall weight and cost.

Abstract: A piston assembly for an internal combustion engine includes a cylinder bore and a piston having a plurality of ring grooves, and a ring positioned within a ring groove. The ring includes a cross-section having a lower surface and an outer radial surface that form a scraping corner, an inner radial surface, and an upper surface. The upper surface and the lower surface are generally parallel with one another, and both upper and lower surfaces form a positive first angle with respect to a radial axis, and the outer radial surface forms a second positive angle with respect to a central axis. A constant twist occurs in the ring about a rotational center of the cross-section, the constant twist occurring at each cross-sectional location of the ring about the circumference of the ring and between adjacent free ends of the ring.

Abstract: Passive audiences are enabled to become active participants in plot choices made by characters in audio/visual broadcast events are provided. A method can comprise downloading, to a user device, an initial section of broadcast audiovisual content and an index representing subsequent subsections of the broadcast audiovisual content, and facilitating display of a prompt as a function of the index. Further, based on a reply, received from the user device in response to the prompt, the method can comprise downloading a subsequent subsection of the subsequent subsections for display by the user device.

Abstract: A piston assembly for an internal combustion engine includes a cylinder bore and a piston having a plurality of ring grooves, and a ring positioned within a ring groove. The ring includes a cross-section having a lower surface and an outer radial surface that form a scraping corner, an inner radial surface, and an upper surface. The upper surface and the lower surface are generally parallel with one another, and both upper and lower surfaces form a positive first angle with respect to a radial axis, and the outer radial surface forms a second positive angle with respect to a central axis. A constant twist occurs in the ring about a rotational center of the cross-section, the constant twist occurring at each cross-sectional location of the ring about the circumference of the ring and between adjacent free ends of the ring.

Abstract: A drive system (10) for an aircraft, operable for selectively enabling ground movement, and in particular taxiing movement, of the aircraft without requiring the aircraft to be moved by a ground vehicle. The drive system (10) comprises a power system (25) and a mechanical transmission (23) for delivering rotational drive to landing gear (13) of the aircraft. The mechanical transmission (23) comprises an input (41) for receiving drive from the power system (25), an output (43) for delivering drive to the landing gear (13), and a gear mechanism (45) operably coupling the input and output to transmit drive from the input to the output. The gear mechanism (45) is configured to accommodate some misalignment between the input (41) and output (43).

Abstract: An apparatus for detecting a leak in a gas cooled generator is provided. The apparatus includes a subsystem for introducing a non-corrosive second gas having an infrared absorption spectrum into the generator. The apparatus also includes an imaging component adapted to detect radiation at the infrared absorption spectrum of the non-corrosive second gas. The imaging component is provided with a filter that filters wavelengths in a range encompassing the infrared absorption spectrum of the non-corrosive second gas. The imaging component displays an image of the tracer gas leaking from the generator on the imaging component.

Abstract: A system for detecting a leak in a steam turbine includes an infrared imaging device adapted to scan at least a portion of the steam turbine and communicate with a notification device. The infrared imaging device includes a cooled detector and a filter with a spectral response or bandpass between about 2.5 ?m and about 8 ?m. The leak will be indicated on the notification device, and the cooled detector is cooled to between about ?80° C. and about ?200° C. The steam turbine may be on-line during leak detection.

Abstract: An apparatus for detecting a leak in a gas cooled generator is provided. The apparatus includes a subsystem for introducing a non-corrosive second gas having an infrared absorption spectrum into the generator. The apparatus also includes an imaging component adapted to detect radiation at the infrared absorption spectrum of the non-corrosive second gas. The imaging component is provided with a filter that filters wavelengths in a range encompassing the infrared absorption spectrum of the non-corrosive second gas. The imaging component displays an image of the tracer gas leaking from the generator on the imaging component.

Abstract: The present invention provides a pressure roller for use in semi-autogenous comminution of maters. The roller has an outer face (11) accommodating a set of wear resistance inserts (13) in a spaced array over the outer face. The inserts are embedded in the surface of the roller and extend into an outer section of the roller. Each insert is spaced inwardly from or is flush with the outer face of the roller.

Abstract: A non-circular wheel assembly for vehicles. The wheel assembly includes a wheel body having a first radius and a second radius, measured from a center of rotation of the wheel body. The wheel assembly includes a compensation mechanism compensating for changing height values of the center of rotation with respect to an external contact surface of the wheel during rotation. The compensation mechanism includes a linear support member with a first connector mounting a vehicle frame to the wheel body. A second connector adjustably connects the compensation mechanism to the wheel body and is positioned at the center of rotation but apart from the first connector. The compensation mechanism includes a linear position assembly adjusting positions of the second connector relative to the first connector during rotation, which allows a distance between the first connector and the outer contact surface to remain constant to provide a single ride height.

Abstract: A non-circular wheel assembly for vehicles. The wheel assembly includes a wheel body having a first radius and a second radius, measured from a center of rotation of the wheel body. The wheel assembly includes a compensation mechanism compensating for changing height values of the center of rotation with respect to an external contact surface of the wheel during rotation. The compensation mechanism includes a linear support member with a first connector mounting a vehicle frame to the wheel body. A second connector adjustably connects the compensation mechanism to the wheel body and is positioned at the center of rotation but apart from the first connector. The compensation mechanism includes a linear position assembly adjusting positions of the second connector relative to the first connector during rotation, which allows a distance between the first connector and the outer contact surface to remain constant to provide a single ride height.

Abstract: A control is provided for switching on and off two heating devices of a hob forming a hotplate. In cyclic manner the continuous energy or power generation level can be adjusted by an energy control device. A temperature limiter monitors a maximum temperature via the first heating device, but not via the second heating device. The energy control device controls the first heating device directly or switches the same. The temperature limiter trips a power relay in order to switch the second heating device simultaneously with the first heating device.

Abstract: An appliance for a hotplate has two heating devices installed parallel to one another. With an energy control device and as a function of an angular position, either a first heating device is operated in controlled manner or a second heating device is connected thereto in fixed form. The power of the second heating device is defined so low that no temperature limiter for protecting a glass ceramic plate has to be provided in the control path of the second heating device. On connecting in the second heating device, the controlled power of the first heating device is lowered to an initial value by roughly the amount of the power of the second heating device. The total power results from the summated power of the two heating devices.

Abstract: An appliance for a hotplate has two heating devices installed parallel to one another. By means of an energy control device and as a function of an angular position, either a first heating device is operated in controlled manner or a second heating device is connected thereto in fixed form. The power of the second heating device is defined so low that no temperature limiter for protecting a glass ceramic plate has to be provided in the control path of the second heating device. On connecting in the second heating device, the controlled power of the first heating device is lowered to an initial value by roughly the amount of the power of the second heating device. The total power results from the summated power of the two heating devices.

Abstract: A control is provided for switching on and off two heating devices of a hob forming a hotplate. In cyclic manner the continuous energy or power generation level can be adjusted by an energy control device. A temperature limiter monitors a maximum temperature via the first heating device, but not via the second heating device. The energy control device controls the first heating device directly or switches the same. The temperature limiter trips a power relay in order to switch the second heating device simultaneously with the first heating device.

Abstract: An electric radiant heater (11, 111) is provided having an active sensor (21, 121) for detecting the position of a cooking vessel on a glass ceramic plate over the radiant heater (11, 111). The sensor (21, 121) is mad from electrically conductive material and is part of an inductive resonant circuit of a control operating by resonant circuit detuning. It also covers a heating zone (17, 117) of the radiant heater (11, 111). The sensor (21, 121) runs substantially linearly and, unlike conventional sensor coils, has a loopless construction. It is e.g. possible to stretch a wire (121) or also to use the tube (21) of a rod regulator.

Abstract: A shaped thermal insulation body comprises inorganic material. The shaped body has the following, weight-related composition: approx. 20 wt. % inorganic filling material: approx. 40 wt. % opacifier; approx. 10 wt. % fibrous material; and approx. 15 wt. % hardening agent as well as approx. 15 wt. % water. The shaped body only contains a small amount of fumed silica with a comparatively small BET surface. Water glass is excluded during its manufacture. It can be used as a spacer for radiant heaters.

Abstract: According to an embodiment of the invention, an electric radiant heater (11, 111) is provided having an active sensor (21, 121) for detecting the position of a cooking vessel on a glass ceramic plate over the radiant heater (11, 111). The sensor (21, 121) is made from electrically conductive material and is part of an inductive resonant circuit of a control operating by resonant circuit detuning. It also covers a heating zone (17, 117) of the radiant heater (11, 111). According to the invention, the sensor (21, 121) runs substantially linearly and, unlike conventional sensor coils, has a loopless construction. It is e.g. possible to stretch a wire (121) or also to use the tube (21) of a rod regulator.

Abstract: A shaped thermal insulation body comprises molded and/or sintered thermal insulation material and contains fumed silica, inorganic fillers, opacifiers and fibers. The BET surface of the thermal insulation material is below 100 m2/g, e.g. between 10 and 100 m2/g, so that the shaped thermal insulation body absorbs less water. In the case of radiant heaters, the shaped thermal insulation body can be used as a base for heating resistors.