DRAIN PLUG AND MANUFACTURING METHOD THEREOF

• Main Authors: FUJINO, JIRO, MATSUMOTO, YOSUKE, MIYAZONO, HIDEAKI
• Format: Patent
• Language: English; French
• Published: 13.03.2018
• Subjects: BLASTING; COMBINED OPERATIONS; CRANKCASE VENTILATING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; LUBRICATING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINE TOOLS; MACHINES OR ENGINES IN GENERAL; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; PIPES; STEAM ENGINES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; UNIVERSAL MACHINE TOOLS; WEAPONS

A drain plug includes a main body which has an entirely threaded region and a partially threaded region. An outer circumferential surface of the main body has an external thread, and at least one cutout. Thus, the entirely threaded region is formed on a base end side of the main body. The cutout includes a first part extending from the leading end of the main body in the axial direction of the main body, and a second part extending from the first part in a direction toward the base end of the main body. The second part has an inclined surface, and the inclined surface is connected to the entirely threaded region.