Abstract: Illuminated decorative displays utilizing fiber optics are presented. The decorative displays are in the form of Christmas season ornaments such as wreaths, Christmas trees, and outdoor lighting series. The simulation of light bulbs is achieved by transmitting light through a solid light conducting medium. In the case of the Christmas tree, a cast solid medium in the form of a coniferous branch is used. In the case of the wreath, either a solid light conductive medium cast in an annular shape, or a hollow annular chamber with perforations filled with optical fiber material is used. In the case of the lighting series, either a long case rod with protrusions, single or bundled group of optical cable is used.

Abstract: A vehicle with a noise-damped drive assembly is disclosed which includes a liquid-cooled internal combustion engine having a radiator with a cooling fluid running therethrough and located in a stream of air. An exhaust manifold having a drive assembly connected thereto is provided. The drive assembly is surrounded by a noise-damping case which has at least one air inlet opening located in a lower front portion of the case in a direction of travel of the vehicle. The case also has at least one air outlet opening located in an upper back portion of the case in the direction of travel. The radiator and exhaust manifold located outside of the case.

Abstract: An air metering valve or supplemental air valve connectable in the PCV system of an internal combustion engine having a shiftable valving member which regulates the quantity of supplemental air introduced into the PCV return. The valve spool is spring biased to the open position by a calibration spring. Pressure chambers are formed on opposite sides of the actuating pistona nd connectable to engine vacuum sources. As the degree of vacuum varies in the vacum sources, the valve spool shifts between an open and closed position. The valve may also be used to provide supplemental ambient combustion air under vacuum control independent of the PCV system. In another embodiment of the invention, the major valve components such as the valve body and shiftable valving member are fabricated from suitable plastic materials.

Abstract: A single cylinder internal combustion engine in a portable power tool is provided with a flywheel counterweight member which functions to substantially reduce engine vibration attributable to linear inertial and reactive forces of the engine's reciprocating mass (including its piston, piston pin, piston pin bearing, and connecting rod) when the piston is adjacent its top dead center and bottom dead center positions. The counterweight member is slidably mounted on the crankshaft, and is captively retained thereon closely adjacent the flywheel, by a retaining sleeve also slidably mounted on the crankshaft. Alignable dimples on the counterweight and the flywheel facilitate the installation of the counterweight in the correct rotational orientation on the crankshaft.

Abstract: A fan cover is provided for including a fan of an engine. The fan cover has an outlet opening to a cylinder of the engine. A pair of baffles are provided on opposite sides of the cylinder in parallel with a crankshaft of the engine to define a space around the cylinder. One end of each of the baffles is secured to the outlet of the fan cover, and the other end is positioned to form an edge for an outlet of the space.

Abstract: A luminaire adapted to be mounted on a pole structure and having a roll axis with respect to that structure, said luminaire consisting of a plurality of elements each of which has a center of gravity positioned in relation to each other so as to contribute to the center of gravity of the luminaire, when mounted, being below, with relation to direction of gravitational pull, a point on the roll axis of the luminaire.

Abstract: A gasoline engine driven flexible line trimmer is provided with a modularly constructed power head section which significantly facilitates the original manufacturing assembly, and subsequent service disassembly, of the power head. In a clutch drive embodiment thereof, the power head has four readily separable modules--an engine module comprising a main engine shroud to which the engine is internally secured; a fan housing module; a starter module comprising a starter housing and a recoil starter mechanism retained therein; and a coupling module comprising a clutch housing carrying therein structure for operatively interconnecting the engine's clutch to the flexible drive shaft disposed within the trimmer shaft. In a direct drive version thereof, the power head has two separable modules--the engine module and a combined fan housing, starter and coupling module defined by a single housing within which the starter and coupling structure is carried.

Abstract: A motor saw wherein combustion air is drawn via a port tangentially located at the fan wheel in the fan housing of the motor saw. The combustion air is taken from an air stream in circulation from an air inlet at the top surface of the motor saw body where the concentration of pollutants is low. Pollutants are separated by the centrifugal effect of the fan before the air gets into the port. The cooling capacity of the air stream is completed with further cooling air from a second inlet. The combustion air can be pre-heated in a heating loop.

Abstract: Shrouded engine cooling fan in which the interface between an outer stationary shroud fixed with respect to a radiator and an inner and rotating shroud fixed to the tips of the fan blades define a generally toroidal chamber in which a vortex of air is generated in response to the rotational drive of said fan that acts as a seal to block the flow of recirculation air from the fan discharge to the fan entrance over a wide range of fan operating points to increase fan operating efficiency and reduce fan generated noises.

Abstract: A liquid cooling system having a combined coolant pump/electric motor assembly detached from a liquid cooled internal combustion engine. Liquid coolant is circulated from a radiator, first through the engine head jacket, then through the engine block jacket and back into the radiator. A two-speed electric pump varies the liquid coolant flow rate in relation to a deviation between actual engine temperature and an optimum temperature. The combined coolant pump/electric motor assembly further combines a magnetic clutch with the electric motor such that a separate magnetic clutch is not required.

Abstract: An internal combustion engine is provided with a sound-insulating enclosure (2), which defines a sealed passage extending through the enclosure. A passage which extends through the enclosure is sealed by a sealing ring (9), which consists of a rubber-elastic material and is disposed between an inner flanged ring (7), which is secured to the engine, and an outer flanged ring (8), which is secured to the enclosure (2). In order to provide sealing means which are satisfactory for a passage for the exhaust manifold (3), the inner flanged ring (7) carries a protective shield (10), which shields the inside surface of the sealing ring (9) and which defines with the sealing ring (9) a clearance (12), which contains a heat-resisting and sound-absorbing insulating material (11).

Abstract: In the representative piston cooling system for an internal combustion engine described in the specification, an evaporation coolant is sprayed on the rear side of a piston by at least one nozzle and the coolant vapor is removed from the crankcase through a blow-by line passing to a condenser which supplies condensed coolant to a coolant reservoir from which the blow-by gases are conveyed to the intake manifold of the internal combustion engine by way of a connecting line.

Abstract: An diesel internal combustion engine with a liquid-cooled cylinder crank casing (1) includes a cylinder head gasket (300) which can be used with either a liquid-cooled cylinder head (200) or an air-cooled cylinder head (100).

Abstract: A device for controlling the engine drive power for automotive vehicles with traction control. A hydraulically actuatable control apparatus (1, 1') is inserted between the drive control pedal (7, 7') and the control member (10, 10') of the vehicle engine. The housing (2, 27) of the control apparatus (1, 1') is stationary and accommodates a piston (3, 30) which is axially slideably by the introduction of auxiliary pressure. The piston is coupled to the drive control pedal (7, 7'), on the one hand, and to the control member (10, 10'), on the other hand. A biased non-return valve (21, 45) which opens by a pedal-side tappet (18, 38) in the event of reduction of the pedal force (F) causes resetting of the control member (10, 10') when the pedal (7, 7') is released. An increase of the pedal force (F) during traction control will not result in a change in the position of the control member.

Abstract: A reciprocating internal combustion engine which is enclosed by a sound-insulating sheath comprises a crankshaft. A coupling which insulates against structure-borne sound is provided for coupling the crankshaft to an auxiliary drive shaft for driving auxiliary devices disposed outside said sheath. Said coupling comprises a resilient ring and axially parallel connecting screws, which are peripherally spaced apart and are secured in alternation to the crankshaft and to the drive shaft and extend through tubular spacers mounted in the ring. The drive shaft is rotatably mounted in a mounting plate, which is fixed to a crossbeam. The internal combustion engine is supported on the crossbeam by an annular member which insulates against structure-borne sound.

Abstract: An illuminated hollow decorative ornament having support means independent of the associated light source or the support structure of the associated light source.

Abstract: A sealing structure around an intercooler arranged in an engine room of an automobile, in which an intercooler cover covers surroundings of the intercooler, and an annular sealing member is mounted to an engine hood for making resilient and tight contact with the intercooler cover to seal a peripheral portion of an air inlet of the engine hood and the intercooler cover when the engine hood is closed.

Abstract: An injection valve for a single suction pipe injection in the case of mixture-compressing internal-combustion engines on the ejection side by an insertion connection by means of a nozzle part is held in a wall breakthrough of the suction pipe, having a rubber elastic O-ring located in-between. In order to avoid damage to the O-ring, when the injection valve is inserted, at the processing edges of the wall breakthrough, a centering device is arranged in the free end area of the nozzle part. Preferably, the centering device is developed at a protective cap that can be arranged in the free end area of the nozzle piece.

Abstract: A method detects the magnitude of knock in an internal combustion engine. Each knock is quantified into a discrete level which gives an indication of the operating condition of the engine. The discrete level signals provide information helpful during engine calibration and engine monitoring. After a predetermined number of level signals indicative of preselected magnitudes of knock are received, an engine shutdown signal is delivered which ceases engine operation.

Abstract: A cooling system for the cylinder head, the inlet manifold and/or the bearings of a turbo-compressor of a combustion engine with a liquid cooling circuit with a radiator, a thermostat and an electric fan as well as a circuit for the cooling of said cylinder head, the inlet manifold wherein the cylinder head and/or the inlet manifold and/or the bearings of a turbo-compressor to be cooled are incorporated in a cirucit (11) which is connected in series or parallel to the part of the engine liquid cooling circuit (6) between the cylinder head of the engine block (1) and the radiator (7).