IT7849703A0 - PROCEDURE AND DEVICE FOR MANUFACTURING UPRIGHTS FOR METALLIC STAIRS - Google Patents

PROCEDURE AND DEVICE FOR MANUFACTURING UPRIGHTS FOR METALLIC STAIRS

Info

Publication number
IT7849703A0
IT7849703A0 IT7849703A IT4970378A IT7849703A0 IT 7849703 A0 IT7849703 A0 IT 7849703A0 IT 7849703 A IT7849703 A IT 7849703A IT 4970378 A IT4970378 A IT 4970378A IT 7849703 A0 IT7849703 A0 IT 7849703A0
Authority
IT
Italy
Prior art keywords
stairs
uprights
metallic
procedure
manufacturing
Prior art date
Application number
IT7849703A
Other languages
Italian (it)
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 IT7849703A0 publication Critical patent/IT7849703A0/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)
  • Punching Or Piercing (AREA)
  • Ladders (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
IT7849703A 1977-06-07 1978-06-05 PROCEDURE AND DEVICE FOR MANUFACTURING UPRIGHTS FOR METALLIC STAIRS IT7849703A0 (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
IT7849703A0 true IT7849703A0 (en) 1978-06-05

Family

ID=9191787

Family Applications (1)

Application Number Title Priority Date Filing Date
IT7849703A IT7849703A0 (en) 1977-06-07 1978-06-05 PROCEDURE AND DEVICE FOR MANUFACTURING UPRIGHTS FOR METALLIC STAIRS

Country Status (4)

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

Families Citing this family (4)

* 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
GB0915220D0 (en) * 2009-09-02 2009-10-07 Summers Shauna Method and apparatus for forming holes in a hollow tubular body
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.

Also Published As

Publication number Publication date
FR2393625B1 (en) 1980-02-15
FR2393625A1 (en) 1979-01-05
DE2824945C2 (en) 1983-12-15
DE2824945A1 (en) 1978-12-14
NL7806089A (en) 1978-12-11

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