Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
  • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
  • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
  • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
  • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
  • B21C37/12—Making tubes or metal hoses with helically arranged seams
  • B21C37/124—Making tubes or metal hoses with helically arranged seams the tubes having a special shape, e.g. with corrugated wall, flexible tubes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
  • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• General Engineering & Computer Science (AREA)
• Exhaust Silencers (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8506156

Family Applications (1)

Country Status (21)

Families Citing this family (2)

• 1970
  • 1970-06-25 FI FI701775A patent/FI52761C/fi active
• 1971
  • 1971-06-16 AT AT522771A patent/AT307816B/de not_active IP Right Cessation
  • 1971-06-17 ZA ZA713945A patent/ZA713945B/xx unknown
  • 1971-06-18 IL IL37092A patent/IL37092A/xx unknown
  • 1971-06-21 GB GB305774A patent/GB1363884A/en not_active Expired
  • 1971-06-21 GB GB2891671A patent/GB1363883A/en not_active Expired
  • 1971-06-22 CH CH909371A patent/CH522125A/de not_active IP Right Cessation
  • 1971-06-22 YU YU01629/71A patent/YU162971A/xx unknown
  • 1971-06-22 BE BE768841A patent/BE768841A/xx unknown
  • 1971-06-23 IE IE811/71A patent/IE36882B1/xx unknown
  • 1971-06-23 FR FR7122804A patent/FR2099828A5/fr not_active Expired
  • 1971-06-23 DE DE2131154A patent/DE2131154C3/de not_active Expired
  • 1971-06-23 CA CA116,485A patent/CA975546A/en not_active Expired
  • 1971-06-24 SE SE7108246A patent/SE372057B/xx unknown
  • 1971-06-24 ES ES392605A patent/ES392605A1/es not_active Expired
  • 1971-06-24 NO NO2403/71A patent/NO133333C/no unknown
  • 1971-06-24 PL PL1971149040A patent/PL77628B1/pl unknown
  • 1971-06-24 CS CS4701A patent/CS150920B2/cs unknown
  • 1971-06-24 NL NL7108751A patent/NL7108751A/xx unknown
  • 1971-06-25 DK DK311971A patent/DK135055C/da active
  • 1971-06-25 BR BR3991/71A patent/BR7103991D0/pt unknown
  • 1971-06-25 SU SU1672201A patent/SU404281A3/ru active

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