Abstract: A rotary connector includes a stator housing 3a installed at a chassis side of a vehicle; a case 4 arranged at the stator housings 3a; a rotor 5 rotatably mounted at the stator housing 3a and connected to a steering wheel; a floating member 6 rotatably engaged with an, outer circumferential part of the rotor 5 and rotatably arranged above bottom surface 3k of the stator housing 3a; and a wound flat cable 7 of which one end is fixed to the rotor 5, the other end of which is fixed to the case 4 and intermediate part of which is passed through reversing segments 6b, 6c formed in the floating member 6 and reversed.

Abstract: A radiator fan controller is provided for lowering temperature in an engine compartment by positively scavenging it if the compartment is hot enough to require scavenging. Coolant temperature Tw is compared with a high temperature determining threshold value TWS. In the case of Tw<TWS, vehicle speed VSP is compared with a low speed determining threshold value VSPS. In the case of VSP<VSPS, intake air temperature Ta is compared with an intake air temperature determining threshold value TAS. In the case of VSP<VSPS and Ta≧TAS, it is determined that scavenging by running wind cannot lower the temperature and a radiator fan should be forcibly turned on. As a result, the engine compartment is forcibly scavenged by blowing air from the radiator fan to prevent respective components from suffering thermal damage caused by excessively rising temperature.

Abstract: Slurry useful for wire-saw slicing has viscosity adjusted to 400-700 mPa·second at a shear speed of 2/second and of 50-300 mPa·second at a shear speed of 380/second. The viscosity of slurry is measured using a cone and plate type viscometer which can measure viscosity at different shear speeds. Since the slurry sufficiently flows into inner parts of grooves formed in an ingot and consumed for wire-saw slicing due to the viscosity controlled in response to the shear speed, the ingot can be efficiently sliced to wafers or discs.

Abstract: An arrangement of components for an engine includes an improved construction. An exhaust system of the engine has an exhaust manifold extending along an cylinder body. At least a part of an air induction system of the engine exists to overlap with the exhaust manifold in a view along an extending axis of the exhaust manifold. A cooling system having at least two coolant passages is further provided. A coolant flow control mechanism is arranged to prevent only the coolant within one of the passages from flowing therethrough when temperature of the coolant is lower than a predetermined temperature.

Abstract: An intake passage of an internal combustion engine is divided into two intake passages downstream of a throttle valve. A tumble generating valve is disposed in one of these two intake passages. When the engine is stopped, the tumble generating valve is fully closed once and then opens by a specified opening angle. While the engine is inoperative, the tumble generating valve is held at that angle until the engine is started again.

Abstract: A radiator fan controller is provided for lowering temperature in an engine compartment by positively scavenging it if the compartment is hot enough to require scavenging. Coolant temperature Tw is compared with a high temperature determining threshold value TWS. In the case of Tw<TWS, vehicle speed VSP is compared with a low speed determining threshold value VSPS. In the case of VSP<VSPS, intake air temperature Ta is compared with an intake air temperature determining threshold value TAS. In the case of VSP<VSPS and Ta≧TAS, it is determined that scavenging by running wind cannot lower the temperature and a radiator fan should be forcibly turned on. As a result, the engine compartment is forcibly scavenged by blowing air from the radiator fan to prevent respective components from suffering thermal damage caused by excessively rising temperature.

Abstract: A rotary connector includes a stator housing 3a installed at a chassis side of a vehicle; a case 4 arranged at the stator housings 3a; a rotor 5 rotatably mounted at the stator housing 3a and connected to a steering wheel; a floating member 6 rotatably engaged with an, outer circumferential part of the rotor 5 and rotatably arranged above bottom surface 3k of the stator housing 3a; and a wound flat cable 7 of which one end is fixed to the rotor 5, the other end of which is fixed to the case 4 and intermediate part of which is passed through reversing segments 6b, 6c formed in the floating member 6 and reversed.

Abstract: A lubricating system is disclosed for an engine arranged such that the crankshaft is vertically oriented. The crankshaft rotates within a crankcase chamber defined by the cylinder block and a crankcase cover connected thereto. First crankshaft support members which support half-bearings extend from the cylinder block. Mating half-bearings are supported by second crankshaft support members positioned opposite the first crankshaft support members. A baffle plate is positioned in the crankcase chamber between the crankcase cover and the crankshaft. At least one oil flow passage is defined through the crankcase chamber from a top end to a bottom end of the chamber. In one embodiment, oil is supplied through a main passage in the crankcase cover and a branch passage through each second crankshaft support members for lubricating the bearings.

Abstract: An improved arrangement of an outboard motor reduces the size of the outboard motor and improves a lubrication system of the outboard motor. Intake and exhaust passages are located along a side of a cylinder body. A crank case lubricant return passage is located on the same side of the cylinder body as the intake and exhaust passages. The return passages have openings located on an inner surface of the crank case. A breather passage connecting a cam chamber and an lubricant reservoir are located on a side of the cylinder body opposite the intake and exhaust passage. The lubricant reservoir including a drain and an insertion port. The insertion port being pointed towards the drain.

Abstract: A newly proposed wire cleaning apparatus used for removing slurry from a wire, which reciprocatively travels between a slicing chamber and a wiring chamber. The wire cleaning apparatus has a couple of multigrooved guide rollers 41, 42 rotatably provided at a cover 30. A slurry receiver 20 is detachably attached to the cover 30. A centrifugal force is generated during repeated reciprocative movement of the wire 5 between the multigrooved guide rollers 41 and 42. Slurry is shaken off from the wire 5 by the centrifugal force and gathered in the slurry receiver 20. Removal of the slurry is accelerated by spraying a cleaning liquid W at the same time. Introduction of the cleaning liquid W into the slicing chamber is inhibited by on-off control of the cleaning nozzles 41, 42 in response to a travelling direction of the wire 5.

Abstract: An ingot 9 is sliced to wafers by a wire 5 which travels around grooved rollers 1 to 3. A tension applied to the wire 5 is detected by tension sensors 21, while vertical displacement of dancer rollers 19 is detected by position sensors 20. At least one of a fluctuation gap of the tension, a fluctuating velocity of the tension, an acceleration of the fluctuation, vertical movement of the dancer rollers 19, a velocity of the vertical movement and acceleration of the vertical movement is calculated from the detection results, and compared with a threshold in a calculating circuit 23 to judge a sign predicting abnormal increase of the tension. When the predicting signal appears, a command signal is outputted from the calculating circuit 22 to a controller 23 to stop operation of a wire-sawing machine or to relax the wire 5. Since rupture of the wire 5 is prevented in bud, a wire-sawing machine is efficiently driven for slicing the ingot 9 with a high productivity.

Abstract: If something goes wrong with a wire saw, a personal computer outputs a dial signal to a modem, which dials a calling number of a pager carried by an operator through a telephone system. The sound of the pager notifies the operator of the abnormality of the wire saw even if he or she is not in the vicinity of the wire saw.

Abstract: A sensor measures a displacement of a sensor, and a control part of a wire saw calculates a sliding load in accordance with the measured displacement and an initial tension of the wire. Then, the control part compares the calculated cutting load with a preset reference value, and controls an ingot feed speed for a drive unit of a workpiece feed table in accordance with the results of the comparison.

Abstract: A crankcase ventilation system is provided for an outboard motor having a cowling and a water propulsion device, an internal combustion engine positioned in the cowling and arranged to propel the water propulsion device. The engine having at least one combustion chamber, a crankcase chamber into which blow-by air and fuel from the combustion chamber passes, a lubricating system including an oil filter and an ignition system including an ignition element for initiating combustion in said combustion chamber. The crankcase ventilation system includes an air intake member defining an intake chamber, at least one air intake port providing a source of air for the engine communicating with the intake chamber and an output port in fluid communication with the intake chamber for delivery of the air to the engine from the intake chamber. At least one blow-by port directs blow-by mixture from the crankcase chamber into the intake chamber at a point on the air intake member between the intake port and the output port.

Abstract: A crankshaft bearing support arrangement is disclosed for an engine arranged such that the crankshaft is vertically oriented. The crankshaft rotates within a crankcase chamber defined by the cylinder block and a crankcase cover connected thereto. First web members which support half-bearings extend from the cylinder block. Mating half-bearings are supported by second web members position opposite the first web members. An oil flow passage is defined through the crankcase chamber generally opposite the cylinder block from a top end to a bottom end of the chamber. In one arrangement, the oil flow passage comprises individual passages through the second web members. In another arrangement, the oil flow passage comprises a space between an end of the second web members opposite the cylinder block and the crankcase cover.

Abstract: An ingot slicing method and apparatus is disclosed. An ingot is sliced by a wire saw having a wire wound over a plurality of grooved rollers at a predetermined pitch. The ingot is secured to a holder and then pressed onto the wire which is carried along one direction or reciprocatively carried over a plurality of grooved rollers. The holder is shifted along one direction parallel to an axis of the grooved rollers until about a half section of the ingot is sliced. The holder is shifted along an inverse direction during slicing the remainder of the ingot. Thus, a wafer sliced off the ingot has a bowed shape corresponding to a locus of movement of the holder.

Abstract: There is disclosed a method of slicing a workpiece through use of a wire saw. The workpiece is pressed at a predetermined feed rate against a wire which moves from a wire feed side to a wire take-up side and slices the workpiece into wafers while abrasive grain slurry is fed to the press contact portion between the wire and the workpiece. The feed rate of the workpiece is controlled according to the size of abrasive grains in the abrasive grain slurry, such that a decrease in the slicing stock removal stemming from a decrease in the size of abrasive grains during slicing is compensated with an increase in the slicing stock removal effected by decreasing the feed rate of the workpiece. The method can make the thicknesses of sliced wafers uniform to the extent possible.

Abstract: A wafer 1 has a chamfered edge 2 polished to specular glossiness, and a laser mark for indication of crystal orientation is put on the chamfered edge 2. Another laser mark 4 for indication of specification, production number, identification, etc. may be carved as a bar code on the chamfered edge 2. These marks 3, 4 are carved on the chamfered edge 2 by laser marking which does not put any harmful influences on the wafer 1.

Abstract: A choke control for an outboard motor having a cowling, a water propulsion device and an internal combustion engine positioned in the cowling and arranged to propel the water propulsion device is disclosed. The engine has at least one combustion chamber and an intake system including an intake pipe extending along a side of the engine for providing air to the combustion chamber. A choke control is provided for actuating a choke valve associated with the intake pipe. The choke control includes a choke actuator which is positioned exterior to the cowling and supported by a mount associated with the cowling, the choke actuator connected to the choke valve via a choke linkage which is positioned within the cowling generally above the intake pipe.

Abstract: A shallow notch 1 as a tentative mark is engraved on a periphery of an ingot at a position corresponding to a predetermined crystal orientation in the step of grinding the periphery of the ingot. After the ingot is sliced to wafers, a mark 2 for indication of a crystal orientation is carved on a sliced wafer at a position determined on the basis of the notch 1 by laser marking. Thereafter, the wafer is chamfered to a round shape, and the notch 1 is removed by the chamfering. Since a part where the mark 2 shall be carved is determined on the basis of the notch 1, the mark 2 is efficiently carved on the wafer without the necessity of subjecting each wafer to an X-ray analyzer.