Abstract: An expansible and retractable protective cover is provided for umbrellas. The cover is mountable to align with the shaft of the umbrella and can be expanded parallel to the shaft of the umbrella to cover the umbrella after the umbrella has been folded into a closed condition. Thus, the cover contains moisture accumulated on the wet umbrella cloth from scattering.

Abstract: An EGR gas cooling apparatus includes a heat exchanger coupled to an introduction route and a delivery route for a thermal medium fluid having a high boiling point of 150 degree Celsius or higher and placed at a body pipe formed with an EGR gas flowing route at one end of which an inlet for the EGR gas is arranged and at the other end of which an outlet for the EGR gas is arranged, thereby improving preventive effects on soot attachments and condensed liquid attachments on the flowing route for the EGR gas, and minimizing reduction of thermal conduction efficiency of the heat conduction pipe due to soot to render the apparatus perform the heat exchange between the EGR gas and the cooling medium liquid.

Abstract: As an efficient and economical bonding method indispensable for the bonding between dimension-small constituent elements (members, parts) to manufacture a minute (micro) structure, a micromachine, etc. is provided a bonding method using a capillary condensation effect characterized in that in order to bond at least two separated bonding targets (works) at a prescribed joint point, the bonding targets are disposed under an atmosphere comprising a prescribed vapor pressure of adhesive agent, and the adhesive agent is subjected to capillary condensation at the joint point to thereby form uniform meniscus and bond the bonding targets (works) by the adhesive agent constituting the meniscus.

Abstract: A magnet type fan clutch apparatus is formed of an electromagnetic clutch mounted on one driving shaft, and a magnet coupling operatively connected to the electromagnetic clutch. The magnetic coupling includes a permanent magnet rotary body to which a fan is fixed, and a disc having a conductor or a hysteresis member opposed to the permanent magnet rotary body with a narrow clearance left therebetween; and formed so that the permanent magnet rotary body and disc are rotated together or relatively owing to an attraction working between the permanent magnet and conductor. The magnetic coupling is formed so as to be ON/OFF controlled by the electromagnetic clutch, and a seal structure is provided between the disc and permanent magnet rotary body.

Abstract: A magnet type fan clutch apparatus is formed of an electromagnetic clutch mounted on one driving shaft, and a magnet coupling operatively connected to the electromagnetic clutch. The magnetic coupling includes a permanent magnet rotary body to which a fan is fixed, and a disc having a conductor or a hysteresis member opposed to the permanent magnet rotary body with a narrow clearance left therebetween; and formed so that the permanent magnet rotary body and disc are rotated together or relatively owing to an attraction working between the permanent magnet and conductor. The magnetic coupling is formed so as to be ON/OFF controlled by the electromagnetic clutch, and a seal structure is provided between the disc and permanent magnet rotary body.

Abstract: An expansible and retractable protective cover is provided for umbrellas. The cover is mountable to align with the shaft of the umbrella and can be expanded parallel to the shaft of the umbrella to cover the umbrella after the umbrella has been folded into a closed condition. Thus, the cover contains moisture accumulated on the wet umbrella cloth from scattering.

Abstract: An umbrella includes a shaft rod having a ferrule fixed to one end thereof and a handle fixed to the other end thereof, a wheel fitted around the shaft rod and adapted to be moved slidingly toward the ferrule and retained on the shaft rod by a resilient locking device when the umbrella is opened, and toward the handle when the umbrella is closed, a plurality of elastic support ribs connected pivotably at one end of each thereof to the frame and extended symmetrically with respect to the axis of the shaft rod, auxiliary support ribs connected pivotably at one end of each thereof to the ferrule, extended along the corresponding elastic support ribs respectively, and connected pivotably at the other end of each thereof to the elastic support ribs, and an umbrella cloth extended so as to cover outer sides of the auxiliary support ribs and elastic support ribs.

Abstract: A common rail has a main pipe rail with a peripheral wall. A boss is provided on the peripheral wall, and a branch hole extends through the boss and into the main pipe rail. The branch hole has a pressure receiving seat face. A branch pipe has a pressing seat face that is urged into the pressure receiving seat face by a fastening nut. An orifice pipe is mounted in the branch hole and abuts against an end of the branch pipe without effecting sealing performance between the pressing seat face and the pressure receiving seat face.

Abstract: There is provided a diesel engine fuel injection pipe which is capable of suppressing pressure variations in the fuel injection pipe and effecting stable injection of fuel and which has a connection portion sealed with high stability. A diesel engine fuel injection pipe includes a head having a conical or spherical seat surface, a clamping nut, and an orifice-pipe disposed at an end of the fuel injection pipe or in the interior of the fuel injection pipe near the end thereof, the orifice pipe having an outer diameter smaller than or equal to the diameter of a pipe passage of the diesel engine fuel injection pipe in the interior of the diesel engine fuel injection pipe near at least one end portion thereof.

Abstract: A magnet type fan clutch apparatus is formed of an electromagnetic clutch mounted on one driving shaft, and a magnet coupling operatively connected to the electromagnetic clutch. The magnetic coupling includes a permanent magnet rotary body to which a fan is fixed, and a disc having a conductor or a hysteresis member opposed to the permanent magnet rotary body with a narrow clearance left therebetween; and formed so that the permanent magnet rotary body and disc are rotated together or relatively owing to an attraction working between the permanent magnet and conductor. The magnetic coupling is formed so as to be ON/OFF controlled by the electromagnetic clutch, and a seal structure is provided between the disc and permanent magnet rotary body.

Abstract: To provide a common rail capable of injecting fuel stably by restraining pressure variation in an injection pipe and having excellent stability of seal at a portion thereof connected to the injection pipe, in a common rail constituted by providing a branch hole having a pressure receive seat face communicating with a main pipe rail and opened outwardly at a boss portion provided at a peripheral wall portion of the main pipe rail, bringing and engaging a pressing seat face portion constituted by a connection head portion in contact with the pressure receive seat face and fastening to connect the pressing seat face portion thereto in accordance with pressing operation under a neck of the connection head portion by screwing a fastening nut, by providing an orifice pipe having an outer diameter the same as or larger than a hole diameter of the branch hole in the branch hole, the orifice pipe does not influence on seal performance and the common rail is constituted to be capable of injecting fuel stably by restrai

Abstract: There is provided a high-pressure metal pipe which has a connecting head capable of solving the risk of cavitation erosion in the inside of the connecting head by changing the contour shape of a pocket or notch to be formed in the inside of the connecting head during head working into a contour shape having a shallow depth and a gentle cross section. A reduced-diameter connecting head having an outside circumferential surface which is a seat surface having a truncated conical or spherical shape corresponding to a mating seat is provided at a connecting end portion of a thick-walled steel pipe having a comparatively small diameter. An annular concave groove to be formed in the inside of the connecting head during the formation thereof has a contour shape having a shallow depth and a gentle cross section, and the high-pressure metal pipe has a sleeve washer having a cylindrical portion which covers the outer circumferential surface of the reduced-diameter connecting head.