FR2239639B1 - - Google Patents

Info

Publication number
FR2239639B1
FR2239639B1 FR7426280A FR7426280A FR2239639B1 FR 2239639 B1 FR2239639 B1 FR 2239639B1 FR 7426280 A FR7426280 A FR 7426280A FR 7426280 A FR7426280 A FR 7426280A FR 2239639 B1 FR2239639 B1 FR 2239639B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7426280A
Other versions
FR2239639A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DROSSBACH FRANCE
Original Assignee
DROSSBACH FRANCE
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 DROSSBACH FRANCE filed Critical DROSSBACH FRANCE
Publication of FR2239639A1 publication Critical patent/FR2239639A1/fr
Application granted granted Critical
Publication of FR2239639B1 publication Critical patent/FR2239639B1/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B11/00—Drainage of soil, e.g. for agricultural purposes
    • E02B11/005—Drainage conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/0015—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes
    • B26F1/0053—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes by machining, e.g. cutting, grinding, projections on the tube wall

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Forests & Forestry (AREA)
  • Agronomy & Crop Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Sink And Installation For Waste Water (AREA)
FR7426280A 1973-07-30 1974-07-29 Mandrel for perforating undulating tubing for land drainage - by shearing off bosses on the inner surfaces of the profile Granted FR2239639A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38412173A 1973-07-30 1973-07-30

Publications (2)

Publication Number Publication Date
FR2239639A1 FR2239639A1 (en) 1975-02-28
FR2239639B1 true FR2239639B1 (fr) 1978-08-11

Family

ID=23516127

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7426280A Granted FR2239639A1 (en) 1973-07-30 1974-07-29 Mandrel for perforating undulating tubing for land drainage - by shearing off bosses on the inner surfaces of the profile

Country Status (1)

Country Link
FR (1) FR2239639A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2557380C2 (de) * 1975-12-19 1983-11-24 Rainer Isolierrohrfabrik Max Drossbach, 8852 Rain Verformungswerkzeug für die Herstellung eines gewellten Innenrohres eines doppelwandigen Tropfbewässerungsrohres mit glattwandigem Außenrohr

Also Published As

Publication number Publication date
FR2239639A1 (en) 1975-02-28

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Legal Events

Date Code Title Description
ST Notification of lapse