NL175938C - METHOD FOR FORMING A CONNECTION BETWEEN A HOLLOW SPORTS AND A LADDER UPRIGHT USING A FIXING RING - Google Patents

METHOD FOR FORMING A CONNECTION BETWEEN A HOLLOW SPORTS AND A LADDER UPRIGHT USING A FIXING RING

Info

Publication number
NL175938C
NL175938C NLAANVRAGE7711314,A NL7711314A NL175938C NL 175938 C NL175938 C NL 175938C NL 7711314 A NL7711314 A NL 7711314A NL 175938 C NL175938 C NL 175938C
Authority
NL
Netherlands
Prior art keywords
forming
connection
fixing ring
ladder upright
hollow sports
Prior art date
Application number
NLAANVRAGE7711314,A
Other languages
Dutch (nl)
Other versions
NL175938B (en
NL7711314A (en
Original Assignee
Werner Co Inc R D
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NL676706414A external-priority patent/NL154438B/en
Application filed by Werner Co Inc R D filed Critical Werner Co Inc R D
Publication of NL7711314A publication Critical patent/NL7711314A/en
Publication of NL175938B publication Critical patent/NL175938B/en
Application granted granted Critical
Publication of NL175938C publication Critical patent/NL175938C/en

Links

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
    • E06C7/085—Connections between rungs or treads and longitudinal members achieved by deforming the rung or the stile
    • 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
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/044—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods perpendicular
    • 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
    • B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
    • B21D39/063—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in for assembling ladders
    • 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
    • E06C7/087—Connections between rungs or treads and longitudinal members with a connecting piece installed around the rung

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Ladders (AREA)
NLAANVRAGE7711314,A 1966-08-09 1977-10-14 METHOD FOR FORMING A CONNECTION BETWEEN A HOLLOW SPORTS AND A LADDER UPRIGHT USING A FIXING RING NL175938C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57124966A 1966-08-09 1966-08-09
NL676706414A NL154438B (en) 1966-08-09 1967-05-08 PROCEDURE FOR FORMING A LADDER CONNECTION USING A BATTERY.

Publications (3)

Publication Number Publication Date
NL7711314A NL7711314A (en) 1978-02-28
NL175938B NL175938B (en) 1984-08-16
NL175938C true NL175938C (en) 1985-01-16

Family

ID=26644190

Family Applications (3)

Application Number Title Priority Date Filing Date
NLAANVRAGE7711314,A NL175938C (en) 1966-08-09 1977-10-14 METHOD FOR FORMING A CONNECTION BETWEEN A HOLLOW SPORTS AND A LADDER UPRIGHT USING A FIXING RING
NLAANVRAGE7711316,A NL173435C (en) 1966-08-09 1977-10-14 METHOD FOR FORMING A LADDER JOINT USING A CYLINDRICAL FIXING
NLAANVRAGE7711315,A NL174284C (en) 1966-08-09 1977-10-14 CONNECTION BETWEEN A HOLLOW SPORT AND A LADDER DOUBLE-WALLED UPRIGHT.

Family Applications After (2)

Application Number Title Priority Date Filing Date
NLAANVRAGE7711316,A NL173435C (en) 1966-08-09 1977-10-14 METHOD FOR FORMING A LADDER JOINT USING A CYLINDRICAL FIXING
NLAANVRAGE7711315,A NL174284C (en) 1966-08-09 1977-10-14 CONNECTION BETWEEN A HOLLOW SPORT AND A LADDER DOUBLE-WALLED UPRIGHT.

Country Status (1)

Country Link
NL (3) NL175938C (en)

Also Published As

Publication number Publication date
NL173435B (en) 1983-08-16
NL7711316A (en) 1978-02-28
NL7711315A (en) 1978-01-31
NL175938B (en) 1984-08-16
NL174284C (en) 1984-05-16
NL174284B (en) 1983-12-16
NL173435C (en) 1984-01-16
NL7711314A (en) 1978-02-28

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Legal Events

Date Code Title Description
BC A request for examination has been filed
V4 Lapsed because of reaching the maximum lifetime of a patent