NL7806089A - METHOD AND DEVICE FOR PUNCHING TUBULAR STYLES OF METAL LADDERS AS WELL AS STYLES AND LADDERS OBTAINED IN ACCORDANCE WITH THIS METHOD AND WITH THIS DEVICE. - Google Patents

METHOD AND DEVICE FOR PUNCHING TUBULAR STYLES OF METAL LADDERS AS WELL AS STYLES AND LADDERS OBTAINED IN ACCORDANCE WITH THIS METHOD AND WITH THIS DEVICE.

Info

Publication number
NL7806089A
NL7806089A NL7806089A NL7806089A NL7806089A NL 7806089 A NL7806089 A NL 7806089A NL 7806089 A NL7806089 A NL 7806089A NL 7806089 A NL7806089 A NL 7806089A NL 7806089 A NL7806089 A NL 7806089A
Authority
NL
Netherlands
Prior art keywords
styles
ladders
accordance
well
metal
Prior art date
Application number
NL7806089A
Other languages
Dutch (nl)
Original Assignee
Gubri Sa Ets L
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 Gubri Sa Ets L filed Critical Gubri Sa Ets L
Publication of NL7806089A publication Critical patent/NL7806089A/en

Links

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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)
NL7806089A 1977-06-07 1978-06-05 METHOD AND DEVICE FOR PUNCHING TUBULAR STYLES OF METAL LADDERS AS WELL AS STYLES AND LADDERS OBTAINED IN ACCORDANCE WITH THIS METHOD AND WITH THIS DEVICE. NL7806089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR777717422A FR2393625A1 (en) 1977-06-07 1977-06-07 Rung hole punching tool for ladder side members - can be adjusted to suit angle of convergence of side members

Publications (1)

Publication Number Publication Date
NL7806089A true NL7806089A (en) 1978-12-11

Family

ID=9191787

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7806089A NL7806089A (en) 1977-06-07 1978-06-05 METHOD AND DEVICE FOR PUNCHING TUBULAR STYLES OF METAL LADDERS AS WELL AS STYLES AND LADDERS OBTAINED IN ACCORDANCE WITH THIS METHOD AND WITH THIS DEVICE.

Country Status (4)

Country Link
DE (1) DE2824945C2 (en)
FR (1) FR2393625A1 (en)
IT (1) IT7849703A0 (en)
NL (1) NL7806089A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2473336A (en) * 2009-09-02 2011-03-09 Dennis Arthur Summers Method and apparatus for forming holes in a hollow tubular body

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307715A (en) * 1992-08-31 1994-05-03 Caterpillar Inc. Angle punching die arrangement
AT409097B (en) * 2000-06-16 2002-05-27 Baumgartner Helmuth Ing DEVICE FOR PUNCHING A HOLE IN A HOLLOW PROFILE
CN103264091B (en) * 2013-07-05 2014-12-17 武汉大学 Method and device for double-faced punching

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1162355A (en) * 1966-12-08 1969-08-27 Leopold Osthoff Punching Holes in Elongated Bodies
DE6806188U (en) * 1968-11-09 1970-08-06 Osthoff Leopold DEVICE FOR PUNCHING HOLES IN THE WALL OF HOLLOW BODIES OF ANY CROSS SECTION.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2473336A (en) * 2009-09-02 2011-03-09 Dennis Arthur Summers Method and apparatus for forming holes in a hollow tubular body

Also Published As

Publication number Publication date
DE2824945A1 (en) 1978-12-14
DE2824945C2 (en) 1983-12-15
FR2393625A1 (en) 1979-01-05
FR2393625B1 (en) 1980-02-15
IT7849703A0 (en) 1978-06-05

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BV The patent application has lapsed