Abstract: A system and method for air compressor control wherein the air compressor is loaded only when engine activities require it to be loaded or when free engine power is available to operate the compressor. An air compressor system is an engine-driven, piston-type compressor which operates in a loaded and an unloaded mode and provides air to a vehicle's air powered devices, such as service brakes, air suspension, windshield wipers, etc. The operating mode of the compressor is controlled by a pressure activated air governor which applies an air signal when pressure in a reservoir reaches a set level that activates a cap valve on an unloader stopping the air compressor. When the air pressure in the reservoir drops below a lower set pressure or when energy is "free," such as during downhill operations, the air governor exhausts the air signal allowing the air compressor to resume operation.

Abstract: A motor vehicle roof with movable cover element (13) which can close or selectively at least partially expose a roof opening (12) in a fixed roof surface (11). There is an electrical cable connection between the cover element (13) and the fixed roof surface (11). The cable connection is attached at one point to, cover element (13) and at a different point securely to the roof. The electrical connection is formed of a ribbon cable which is bent in a U shape in its longitudinal direction between the attachment points (21, 27) and is essentially planar in its transverse direction between the attachment points (21 and 27). The ribbon cable (20) peals off of the contact surface (23) provided on cover element (13) and/or the roof contact surface (26) when the cover element (13) is moved and is reapplied in an opposite direction of movement.

Abstract: A porous composite forming material is held in a cavity of a casting mold, and molten light alloy is poured into the cavity of the casting mold through a gate. Then a gas pressure is applied to the cavity in the casting mold with the cavity closed, thereby impregnating the pores of the porous composite forming material with the molten light alloy and forming a composite portion formed of a composite material of the light alloy and the composite forming material.

Abstract: A method and an installation for producing biconical wire, i.e., wire with repeating cylindrical and conical wire sections from a cylindrical starting material, in particular for producing helical compression springs inexpensively by using hot forming to form the conical wire sections. The installation has a heating unit (1) and a forming unit (2). The embodiment also includes a cooling unit (3) downstream from the heating unit (1), a cooling unit (4) downstream from the forming unit (2), a roll control (5), a re-rolling unit (6) downstream from the forming unit (2), another heating unit (7) for annealing or tempering, a cooling unit (8) downstream from the additional heating unit (7), an uncoiler (9), a roller straightening apparatus (10) and a coiler (11).

Abstract: A semiconductor device having high carrier mobility, which comprises a substrate provided thereon a base film and further thereon a crystalline non-single crystal silicon film by crystal growth, wherein, the crystals are grown along the crystallographic [110] axis, and source/drain regions are provided approximately along the direction of carrier movement which coincides to the direction of crystal growth. Moreover, the electric conductivity along this direction of crystal growth is higher than any in other directions.

Abstract: For some powered drum winches, e.g. in sailing boats, it is desirable that the drum can be driven with two different speeds. Basically, this is no technical problem, but it has been difficult to achieve both a high efficiency and a simple construction. It has been proposed that with the use of a plural shaft gear an advantageous result is obtainable in making the gear drive the drum with two different speeds based on a reversible driving motor being driven in one or the opposite direction. This control principle is also used in the present connection in which, however, it is disclosed how the relevant gear can be designed in a compact and inexpensive manner about only a single gear shaft.

Abstract: A flat belt 6 is wound around between an annular friction surface 2 at a periphery of a first rotatable member 1 and an arc-like friction surface 4 of a rocking portion 3 of a second rotatable member 5 which is relatively rotatably supported on the first rotatable member 2, and an initial tension is applied to the flat belt 6. With relative rotation movement between the rotatable members 1 and 5 in a locking or free direction, the rocking portion 3 is rocked around a rocking axis Q by the flat belt 6. By virtue of such rocking movement of the rocking portion 3, the tension of the flat belt 6 is increased up to a higher value than the initial tension or decreased down to a lower value than the initial tension. This permits connection or disconnection of the transmission of torque between the rotatable members 1 and 5 in dependence on the relative rotational direction of the rotatable members 1 and 5.

Abstract: To provide a sound absorbing structure having a superior sound absorbing characteristic and an external appearance of the sound absorbing structure which does not cause flicker or the like, by disposal, for example, in the front of an air chamber, a plurality of ribs (2a) are disposed on one surface of the sound absorbing board body (2), and a plurality of through-holes (3) are provided in basal portions (2b) between the ribs (2a) to form a porous structure. Concealing materials (5) are provided between the ribs (2a) of the sound absorbing board body to conceal the through-holes (3), respectively.

Abstract: A hanger which accommodates walls made of gypsum boards of varying thickness while allowing heavy items to be hung from the hanger. The hanger features a front plate, a backing plate and a hanger-screw. The item to be hung being suspended from the hanger-screw. The hanger is inserted into a perforation or hanger opening in the gypsum board. The hanger is introduced into the hanger hole so as to allow the backing plate to rotate about the hook of the front plate. The front plate is then pulled toward the user until the backing plate contacts a back wall of the gypsum board. The front plate is then bent in a direction so as to be substantially parallel to the backing plate and the gypsum board and so that complementary attachment holes in the backing plate and the front plate align so that the hanger-screw can engage both sets of holes. The hanger-screw is engaged into the backing plate and front plate and the gypsum board up until the stop portion of the hanger-screw abuts the front plate.

Abstract: A preparation method of a semiconductor device comprising a substrate having formed thereon plural semiconductor elements formed in a matrix form and plural pixel electrodes each connected to each semiconductor element and a liquid crystal layer held on the substrate, comprisinga step of forming the plural pixel electrodes on an interlayer dielectric,a step of heat-treating the plural electrodes to form hillocks and whiskers on the surfaces of the electrodes, anda step of removing the hillocks and the whiskers to flatten the electrode surfaces.The semiconductor device is suitably used for, for example, a reflection type LCD apparatus with pixel electrodes having a good light reflectance and a high anti-brittleness.

Abstract: A combustion seal for sealing high pressure combustion gas within at least one cylinder of an internal combustion engine including a cylinder block, a cylinder head having a groove formed in its bottom face, a cylinder liner having a complementary groove formed in its top face, and a O-ring formed from a ductile material and positioned between and contacting each edge of the groove formed in the cylinder head and the complementary groove formed in the cylinder liner, wherein the O-ring is compressed when the cylinder head is secured on the cylinder such that the O-ring has multiple radial restraint points of contact with the edges. When securing the cylinder head onto the cylinder block, the O-ring is positioned between the grooves in the cylinder head and cylinder liner before a compressive force is applied.

Abstract: A self-closing cap for the fuel filler neck of a vehicle is provided which is particularly adapted for use with an automatic gas filling machine. The cap comprises a closure ring having an annular body and screw threads or bayonet lugs for detachably mounting the periphery of the annular body around the open end of the filler neck, and a closure flap assembly formed from a circular member with a nozzle receiving opening, a closure flap spring biased over the opening, and a pivotal mounting connecting the flap over the opening. The closure flap assembly includes a locking ratchet mechanism for securing the circular member over the closure ring in a selected angular position such that the pivotal mounting is substantially 180.degree. opposite from the pivotal connection of the restrictive flap within a filler neck of a vehicle to allow a fuel nozzle from an automatic gas filling machine to be smoothly inserted into and withdrawn from the self-closing cap.

Abstract: A flexible convertible top (1) of a vehicle with a top material (2) which has a least one layer (4) of a weldable plastic and to which at least one fixed element (5,6,7) is attached. To ensure cost-favorable and modular adjustability of a flexible convertible top, it is provided that a layer (25,26,27) of a plastic which can be directly welded to the plastic layer (4) of top material (2) is provided on at least one surface of the fixed element (5,6,7).

Abstract: A halogen fluoride such as ClF.sub.3 is introduced into the chamber of the doping system. During the doping process, boron adhering to the inner wall of the chamber is changed into gaseous boron fluoride (such as BF.sub.3) and driven off.

Abstract: A coating of drystuff particles on the outside of an ice dome projecting from a cone is effected by pressing down the inversed cone against a spherical resilient membrane having a overlying layer of a particulate material. The invention proposes to coat the domes projecting further from the cone with the use of compressed air for pressing the membrane against the dome surface and by arranging for a vertical movement of the membrane relative to the overlying layer of the particle material.

Abstract: A rubber sheet is arranged between a head body and a retainer ring of a wafer holding head. Two O-rings air-tightly close a space between the periphery of the rubber sheet, which is located above the retainer ring, and the head body. When a pump supplies the compressed air to the space, the periphery of the rubber sheet is elastically deformed to press the retainer ring under uniform pressure.

Abstract: The invention relates to electrical or electronic device (1) for seating on a mounting rail (2), with a housing (3), at least one circuit board (4) located in the housing (3), and with at least one contact arrangement (6) having a contact (8) for making contact with the circuit board (4), and front and rear bus contacts for a data and/or power bus connection to adjacent devices (1) which have corresponding contact arrangements (6) and which are seated on the mounting rail (2). To be able to the produce contact arrangement (6) of the device (1) easily and quickly, the circuit board contact (8), the front bus contact (9) and the rear bus contact (10) are produced from the same continuous piece of electrically conductive material.

Abstract: An outsole for a shoe is formed a thin, flexible, nonporous and inelastic sheet material having a pattern of perforations through it, and a plurality of tread elements of a hard, wear-resistant material molded onto a first side of the sheet material by a process in which the tread forming material is inject through the perforations in a manner such that at least some of the resultant tread elements have anchoring portions extending through the perforations from an opposite second side of the sheet material, a portion of the sheet material around the perforations being held between the tread elements and the anchoring portions. A pattern of treads of various shapes and sizes can be provided in a configuration generally conforming with the sole surface to which the outsole is to be applied, so that a minimum of tread material wastage occurs when the outsole is cut out from the sheet material.

Abstract: A door lock arrangement for motor vehicles with a closing cylinder arrangement (2) attached to outer sheet metal (1) of the body of a vehicle so as to be accessible from the outside and with a lock mechanism (5) attached in the body to be inaccessible from the outside. On the closing cylinder arrangement (2) there is transfer element (6) which establishes the connection of closing cylinder arrangement (2) to the lock mechanism (5). A corresponding coupling element (7) on the lock mechanism (5) engages the transfer element (6) by form-fit such that rotary motion of transfer element (6) is converted into a corresponding rotary motion of the coupling element (7).

Abstract: An input interval of a keyboard of an input device is measured. The luminance of a display device is changed in accordance with the measured input interval of the keyboard.