Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
  • B23P15/002—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings poppet valves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
  • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
  • B21C37/15—Making tubes of special shape; Making tube fittings
  • B21C37/151—Making tubes with multiple passages
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
  • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
  • F01L3/12—Cooling of valves
  • F01L3/16—Cooling of valves by means of a fluid flowing through or along valve, e.g. air
  • F01L3/18—Liquid cooling of valve
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49229—Prime mover or fluid pump making
  • Y10T29/49298—Poppet or I.C. engine valve or valve seat making
  • Y10T29/49307—Composite or hollow valve stem or head making
  • Y10T29/49311—Composite or hollow valve stem or head making including extruding

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• General Engineering & Computer Science (AREA)
• Forging (AREA)
• Extrusion Of Metal (AREA)

Applications Claiming Priority (1)

Publications (2)

Family

ID=9191391

Family Applications (1)

Country Status (11)

Families Citing this family (11)

Family Cites Families (7)

• 1977
  • 1977-05-27 FR FR7716384A patent/FR2392224A1/fr active Granted
• 1978
  • 1978-05-18 GB GB20572/78A patent/GB1604283A/en not_active Expired
  • 1978-05-18 DE DE19782821752 patent/DE2821752A1/de not_active Withdrawn
  • 1978-05-19 US US05/907,699 patent/US4190941A/en not_active Expired - Lifetime
  • 1978-05-19 IT IT23596/78A patent/IT1095512B/it active
  • 1978-05-25 CH CH569678A patent/CH622857A5/fr not_active IP Right Cessation
  • 1978-05-26 SU SU782618501A patent/SU724091A3/ru active
  • 1978-05-26 DK DK235778A patent/DK235778A/da not_active Application Discontinuation
  • 1978-05-26 NL NL7805781A patent/NL7805781A/xx not_active Application Discontinuation
  • 1978-05-26 SE SE7806069A patent/SE7806069L/xx unknown
  • 1978-05-27 JP JP6420278A patent/JPS53148636A/ja active Pending

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