Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D15/00—Corrugating tubes
  • B21D15/04—Corrugating tubes transversely, e.g. helically
  • B21D15/06—Corrugating tubes transversely, e.g. helically annularly
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
  • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=3881828

Family Applications (2)

Family Applications After (1)

Country Status (2)

• 0
  • BE BE420680D patent/BE420680A/xx unknown
  • BE BE426835D patent/BE426835A/xx unknown
• 1938
  • 1938-03-16 FR FR835318D patent/FR835318A/fr not_active Expired

Also Published As

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