Abstract: A double-capped short arc flash lamp includes an arc tube, a pair of main electrodes disposed in the arc tube, and a pair of auxiliary electrodes disposed in the arc tube. The flash lamp also includes inner leads and outer leads associated with the two auxiliary electrodes, respectively. The flash lamp also includes a first sealing tube and a second sealing tube provided at opposite ends of the arc tube. A sealing glass tube is partly received in the second sealing tube. Grooves are formed in the outer surface of the sealing glass tube in a region where the sealing glass tube overlaps the second sealing tube. The grooves extend in the axial direction of the sealing glass tube, and are configured to receive the inner leads and the outer leads. Metallic foils electrically connect the inner leads with the outer leads, respectively.

Abstract: A double-capped short arc flash lamp includes an arc tube, a pair of main electrodes disposed in the arc tube, and a pair of auxiliary electrodes disposed in the arc tube. The flash lamp also includes inner leads and outer leads associated with the two auxiliary electrodes, respectively. The flash lamp also includes a first sealing tube and a second sealing tube provided at opposite ends of the arc tube. A sealing glass tube is partly received in the second sealing tube. Grooves are formed in the outer surface of the sealing glass tube in a region where the sealing glass tube overlaps the second sealing tube. The grooves extend in the axial direction of the sealing glass tube, and are configured to receive the inner leads and the outer leads. Metallic foils electrically connect the inner leads with the outer leads, respectively.

Abstract: A short arc type discharge lamp comprises a pair of electrodes, at least one of which has an electrode main body portion and an axis portion and/or a taper portion formed between the electrode main body portion and the axis portion, wherein in the at least one of the electrodes, the axis portion has an outer diameter smaller than that of the electrode main body portion, and at least one groove extending in an axis line direction of the electrode is formed in the electrode main body portion, the axis portion or the taper portion.

Abstract: In a high pressure discharge lamp having electrode rods with grooves formed in a part thereof and embedded and sealed in sealing parts of a discharge vessel, breakage of the sealing parts because of the grooves is prevented without impairing the mechanical strength of the electrode rods, in which the grooves are formed, by the high pressure discharge lamp comprising: a discharge vessel having a light emitting part and sealing parts connected to both ends of said light emitting part; and electrodes comprising electrode rods and electrode tip end parts arranged oppositely to each other in the light emitting part, said electrode rods being embedded in a respective one of said sealing parts, and axially directed grooves being formed in at least part of the surface of said electrode rods, wherein a diameter measured at groove bottom parts of the grooves of said electrode rods is larger than a diameter of the electrode rods in a part where no grooves are formed.

Abstract: In a cylinder head lubricating structure for an engine, in which a breather passage which guides, toward a cylinder head, gas including oil mist generated in a crank chamber by oil splashing means housed in the crank chamber so as to splash-oil in accordance with rotation of a crankshaft is formed in a crankcase, a cylinder block and the cylinder head to supply, toward the cylinder head, lubricating oil through the breather passage, a breather chamber with which an end portion, on the crank chamber side, of the breather passage communicates is formed in the crankcase, and a one-way valve preventing backflow of the oil toward the crank chamber is attached to the crankcase to be located between the crank chamber and the breather chamber. Accordingly, it is possible to supply a sufficient amount of oil to the cylinder head side even when the head difference between the crank chamber and the cylinder head is large.

Abstract: A short arc type discharge lamp has a pair of electrodes, at least one of which has an electrode body and an axis part. A taper part is formed at a base side of the electrode body. Plural holes extending in an axis direction of the electrode in line are formed at the taper part.

Abstract: In a high pressure discharge lamp having electrode rods with grooves formed in a part thereof and embedded and sealed in sealing parts of a discharge vessel, breakage of the sealing parts because of the grooves is prevented without impairing the mechanical strength of the electrode rods, in which the grooves are formed, by the high pressure discharge lamp comprising: a discharge vessel having a light emitting part and sealing parts connected to both ends of said light emitting part; and electrodes comprising electrode rods and electrode tip end parts arranged oppositely to each other in the light emitting part, said electrode rods being embedded in a respective one of said sealing parts, and axially directed grooves being formed in at least part of the surface of said electrode rods, wherein a diameter measured at groove bottom parts of the grooves of said electrode rods is larger than a diameter of the electrode rods in a part where no grooves are formed.

Abstract: A short arc type discharge lamp has a pair of electrodes, at least one of which has an electrode body and an axis part. A taper part is formed at a base side of the electrode body. Plural holes extending in an axis direction of the electrode in line are formed at the taper part.

Abstract: A short arc type discharge lamp comprises a pair of electrodes, at least one of which has an electrode main body portion and an axis portion and/or a taper portion formed between the electrode main body portion and the axis portion, wherein in the at least one of the electrodes, the axis portion has an outer diameter smaller than that of the electrode main body portion, and at least one groove extending in an axis line direction of the electrode is formed in the electrode main body portion, the axis portion or the taper portion.

Abstract: In a cylinder head lubricating structure for an engine, in which a breather passage which guides, toward a cylinder head, gas including oil mist generated in a crank chamber by oil splashing means housed in the crank chamber so as to splash-oil in accordance with rotation of a crankshaft is formed in a crankcase, a cylinder block and the cylinder head to supply, toward the cylinder head, lubricating oil through the breather passage, a breather chamber with which an end portion, on the crank chamber side, of the breather passage communicates is formed in the crankcase, and a one-way valve preventing backflow of the oil toward the crank chamber is attached to the crankcase to be located between the crank chamber and the breather chamber. Accordingly, it is possible to supply a sufficient amount of oil to the cylinder head side even when the head difference between the crank chamber and the cylinder head is large.

Abstract: The present invention provides a contact module, a connector, and a method of producing the contact module. The contact module includes a base and a plurality of contacts. Each of the contacts is bent at both ends in one direction. In a section view of each of the contacts, an insulating film, a barrier film, a plating base film, and a plating film are formed on a sheet in this order. The base that bridges the contacts has only the insulating film laminated on the sheet. The plating film has contact points at the bent parts, and a circuit pattern that is interposed between the contact points. The circuit pattern functions as a signal line.

Abstract: The present invention provides a contact module, a connector, and a method of producing the contact module. The contact module includes a base and a plurality of contacts. Each of the contacts is bent at both ends in one direction. In a section view of each of the contacts, an insulating film, a barrier film, a plating base film, and a plating film are formed on a sheet in this order. The base that bridges the contacts has only the insulating film laminated on the sheet. The plating film has contact points at the bent parts, and a circuit pattern that is interposed between the contact points. The circuit pattern functions as a signal line.

Abstract: In a diaphragm-type carburetor, a fuel vapor treating chamber is provided in a downstream fuel passage which interconnects a fuel pump operated in response to a pulsation pressure from a pulsation pressure generating source and an inlet bore in a constant-pressure fuel chamber. The fuel vapor treating chamber is located before the inlet bore, and a porous element for finely dividing fuel vapor is placed in the fuel vapor treating chamber. Thus, when a fuel vapor is generated in the fuel discharged from the fuel pump, a large amount of fuel vapor can be prevented from being ejected all at one time from a fuel nozzle by finely dividing the fuel vapor and introducing it along with the fuel into the constant-pressure fuel chamber, it is immediately passed toward the fuel nozzle, whereby the variation in air-fuel ratio of a fuel-air mixture can be suppressed to a very small level.

Abstract: A diaphragm-type carburetor includes a fuel well communicating with a lower end of a fuel nozzle, a constant-pressure fuel chamber communicating with the fuel well through an outlet bore, and a fuel pump incorporated in fuel passages defined between an inlet bore of the constant-pressure fuel chamber and a fuel tank. A fuel introduction control valve controls the introduction of fuel into the constant-pressure fuel chamber. The fuel introduction control valve includes a valve seat member which communicates at its lower end with the fuel well through a bypass passage extending above the constant-pressure fuel chamber. Thus, when fuel vapor is introduced into the constant-pressure fuel chamber, it immediately passes towards the fuel nozzle, whereby the extreme reduction in air-fuel ratio of a fuel-air mixture can be avoided.

Abstract: A fuel supply passage leading to a fuel tank is connected to an intake side of a fuel pump of a diaphragm-type carburetor, and a fuel transfer chamber incorporated in an intermediate portion of the fuel supply passage is provided in an insulator interposed between the carburetor and an engine. The fuel pumped from the fuel tank is heated in the chamber moderately, thereby decreasing the difference in temperature between the carburetor and the fuel introduced into the carburetor. Thus, the generation of fuel vapor in the diaphragm-type carburetor can be restrained.

Abstract: An OHC vertical crankshaft engine, comprising: a vertically disposed crankshaft having a first timing pulley at its lower end; a cooling fan attached to an upper end of the crankshaft; a camshaft extending in parallel with the crankshaft at a cylinder head end of the engine and having a second timing pulley at its lower end; and a timing belt passed around the timing pulleys. Thus, the need for lubrication for the transmission mechanism between the crankshaft and the camshaft is substantially eliminated, and the noise generation is reduced. Additionally, since the upper part of the cylinder head is directly exposed to the cooling air produced by a fan provided at an upper end of the crankshaft, a high engine cooling efficiency can be achieved. This effect is even more enhanced if the exhaust port of the engine is disposed above the intake port and extends horizontally and linearly away from the engine.

Abstract: A cooling structure for cooling a liquid-cooled engine has engine cooling passages defined in portions of the engine for circulating a cooling medium therethrough. The cooling structure further includes a rotatable assembly having a rotatable element located outside of the engine, and a radiation passage system of a prescribed length disposed in the rotatable element for rotation therewith and connected to the engine cooling passages.