MX9600449A - Multi-cavity plate, method and apparatus of forming a joint therewith, and a ladder. - Google Patents

Multi-cavity plate, method and apparatus of forming a joint therewith, and a ladder.

Info

Publication number
MX9600449A
MX9600449A MX9600449A MX9600449A MX9600449A MX 9600449 A MX9600449 A MX 9600449A MX 9600449 A MX9600449 A MX 9600449A MX 9600449 A MX9600449 A MX 9600449A MX 9600449 A MX9600449 A MX 9600449A
Authority
MX
Mexico
Prior art keywords
ladder
rung
forming
bead
rail
Prior art date
Application number
MX9600449A
Other languages
Spanish (es)
Inventor
Bruce Wesley
Donald Gibson
Original Assignee
Werner Co
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
Application filed by Werner Co filed Critical Werner Co
Publication of MX9600449A publication Critical patent/MX9600449A/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
    • B21D39/06—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

Landscapes

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

Abstract

A ladder which comprises a first side rail, the ladder also comprises at least a second side rail in parallel and in spaced relationship with the first side rail. Moreover, the ladder is comprised of at least one rung locked to each side rail by a joint. The joint has at least one bead formed from the rung. The bead has a concentrated crimp extending at least along the bead preferably at its portion of greatest radius of curvature. An apparatus for forming an outside bead of a malleable metal rung to lock the rung to a web of a rail of a ladder. A method for forming a joint of a malleable metal rung to lock the rung to a web of a rail of a ladder. A plate for forming a bead of a malleable metal rung to fix the rung to a web of a rail of a ladder.
MX9600449A 1995-02-10 1996-02-01 Multi-cavity plate, method and apparatus of forming a joint therewith, and a ladder. MX9600449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38715795A 1995-02-10 1995-02-10

Publications (1)

Publication Number Publication Date
MX9600449A true MX9600449A (en) 1997-01-31

Family

ID=23528721

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9600449A MX9600449A (en) 1995-02-10 1996-02-01 Multi-cavity plate, method and apparatus of forming a joint therewith, and a ladder.

Country Status (2)

Country Link
EP (1) EP0733773A1 (en)
MX (1) MX9600449A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2797206B1 (en) * 1999-08-04 2002-02-15 Christine Roslyj METHOD OF RIGID CONNECTION BETWEEN A TUBULAR ELEMENT AND A METAL PLANAR ELEMENT ESPECIALLY APPLICABLE TO LADDERS AND THE LIKE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3140540A (en) * 1961-08-11 1964-07-14 Greenman Murry Method for connecting presemiflanged rungs to preapertured spaced ladder rails
US3279051A (en) * 1965-04-05 1966-10-18 Minshall Aubrey Wilson Method of forming a joint between a metal rail and a hollow metal rung
US3545072A (en) * 1967-10-19 1970-12-08 Werner Co Inc R D Method of joining a ladder rung to a ladder rail
CH545941A (en) * 1971-11-23 1974-02-15

Also Published As

Publication number Publication date
EP0733773A1 (en) 1996-09-25

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Legal Events

Date Code Title Description
FA Abandonment or withdrawal