Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06C—LADDERS
  • E06C7/00—Component parts, supporting parts, or accessories
  • E06C7/08—Special construction of longitudinal members, or rungs or other treads
  • E06C7/082—Connections between rungs or treads and longitudinal members
  • E06C7/084—Rungs comprising projecting tabs or flanges
• • 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
  • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
• • 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
  • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
  • B21D47/04—Making rigid structural elements or units, e.g. honeycomb structures composite sheet metal profiles
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C3/00—Structural elongated elements designed for load-supporting
  • E04C3/30—Columns; Pillars; Struts
  • E04C3/32—Columns; Pillars; Struts of metal
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06C—LADDERS
  • E06C1/00—Ladders in general
  • E06C1/02—Ladders in general with rigid longitudinal member or members
  • E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
  • E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
  • E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06C—LADDERS
  • E06C7/00—Component parts, supporting parts, or accessories
  • E06C7/08—Special construction of longitudinal members, or rungs or other treads
  • E06C7/082—Connections between rungs or treads and longitudinal members
  • E06C7/085—Connections between rungs or treads and longitudinal members achieved by deforming the rung or the stile
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B17/00—Connecting constructional elements or machine parts by a part of or on one member entering a hole in the other and involving plastic deformation
  • F16B17/006—Connecting constructional elements or machine parts by a part of or on one member entering a hole in the other and involving plastic deformation of rods or tubes to sheets or plates

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• General Engineering & Computer Science (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Ladders (AREA)
• Rod-Shaped Construction Members (AREA)
• Mutual Connection Of Rods And Tubes (AREA)
• Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
• Bridges Or Land Bridges (AREA)
• Joining Of Building Structures In Genera (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4097235

Family Applications (1)

Country Status (17)

Families Citing this family (14)

Family Cites Families (2)

• 1973
  • 1973-07-09 CA CA175,985A patent/CA1009428A/en not_active Expired
• 1974
  • 1974-01-01 AR AR252845A patent/AR205442A1/es active
  • 1974-03-05 GB GB994774A patent/GB1452204A/en not_active Expired
  • 1974-03-08 ZA ZA00741539A patent/ZA741539B/xx unknown
  • 1974-03-15 AU AU66705/74A patent/AU472556B2/en not_active Expired
  • 1974-03-25 DE DE2414268A patent/DE2414268C3/de not_active Expired
  • 1974-03-25 DE DE7410355U patent/DE7410355U/de not_active Expired
  • 1974-03-26 JP JP3317974A patent/JPS5423051B2/ja not_active Expired
  • 1974-04-09 ES ES425132A patent/ES425132A1/es not_active Expired
  • 1974-04-10 IN IN810/CAL/1974A patent/IN142112B/en unknown
  • 1974-04-17 NL NL7405203.A patent/NL164223C/xx not_active IP Right Cessation
  • 1974-04-23 IT IT50578/74A patent/IT1008468B/it active
  • 1974-05-03 SE SE7405925A patent/SE393659B/xx unknown
  • 1974-06-07 BE BE145221A patent/BE816086A/xx not_active IP Right Cessation
  • 1974-06-07 BR BR4734/74A patent/BR7404734A/pt unknown
  • 1974-07-05 FR FR7423455A patent/FR2237049B1/fr not_active Expired
  • 1974-07-09 SU SU742151546A patent/SU587876A3/ru active
  • 1974-07-09 CH CH943274A patent/CH594822A5/xx not_active IP Right Cessation
  • 1974-10-23 ES ES1974206840U patent/ES206840Y/es not_active Expired
• 1978
  • 1978-07-31 JP JP53092677A patent/JPS5813761B2/ja not_active Expired

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