FR2441476A1 - METHOD FOR PLEATING PLASTIC AIR NOZZLES - Google Patents
METHOD FOR PLEATING PLASTIC AIR NOZZLESInfo
- Publication number
- FR2441476A1 FR2441476A1 FR7925813A FR7925813A FR2441476A1 FR 2441476 A1 FR2441476 A1 FR 2441476A1 FR 7925813 A FR7925813 A FR 7925813A FR 7925813 A FR7925813 A FR 7925813A FR 2441476 A1 FR2441476 A1 FR 2441476A1
- Authority
- FR
- France
- Prior art keywords
- pleating
- air nozzles
- plastic air
- triangle
- leaving
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/22—Corrugating
- B29C53/30—Corrugating of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/0003—Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
- B31F1/0006—Bending or folding; Folding edges combined with joining; Reinforcing edges during the folding thereof
- B31F1/0032—Bending or folding; Folding edges combined with joining; Reinforcing edges during the folding thereof of tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall
- F16L11/111—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall with homogeneous wall
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Duct Arrangements (AREA)
- Cartons (AREA)
- Materials For Medical Uses (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
POUR OBTENIR UNE BUSE D'AERAGE EXTENSIBLE, QUI PEUT PAR EXEMPLE PRENDRE UNE LONGUEUR DEPLOYEE DE 100M ET ETRE REPLIEE ET DESCENDUE AU FOND DE LA MINE SOUS LA FORME D'UN PAQUET AYANT UNE HAUTEUR DE 1M ET LA SECTION NORMALE DE PASSAGE, ON UTILISE UNE BUSE EN MATIERE PLASTIQUE QUE L'ON PLISSE DANS UN PREMIER PLAN TRANSVERSAL EN LAISSANT UNE SECTION LIBRE DE PLI PRESENTANT LA FORME D'UN TRIANGLE (OU AUTRE POLYGONE) PUIS, DANS LE PLAN SUIVANT EN LAISSANT UNE SECTION LIBRE DONT LE TRIANGLE EST DECALE D'UN CERTAIN ANGLE PAR RAPPORT AU PRECEDENT.TO OBTAIN AN EXTENSIBLE AIR NOZZLE, WHICH MAY, FOR EXAMPLE, TAKE AN EXTENDED LENGTH OF 100M AND BE FOLDED AND DESCENDED TO THE BOTTOM OF THE MINE IN THE FORM OF A PACKAGE HAVING A HEIGHT OF 1M AND THE NORMAL PASSAGE SECTION A PLASTIC NOZZLE WHICH IS PLEATED IN A FIRST CROSS-SECTIONAL PLANE, LEAVING A FREE SECTION OF FOLD HAVING THE FORM OF A TRIANGLE (OR OTHER POLYGON) THEN, IN THE FOLLOWING PLAN LEAVING A FREE SECTION OF WHICH THE TRIANGLE IS OFFSET FROM A CERTAIN ANGLE IN RELATION TO THE PREVIOUS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2850267A DE2850267C2 (en) | 1978-11-20 | 1978-11-20 | Method of folding plastic tubes |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2441476A1 true FR2441476A1 (en) | 1980-06-13 |
FR2441476B1 FR2441476B1 (en) | 1984-04-06 |
Family
ID=6055134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7925813A Granted FR2441476A1 (en) | 1978-11-20 | 1979-10-17 | METHOD FOR PLEATING PLASTIC AIR NOZZLES |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2850267C2 (en) |
FR (1) | FR2441476A1 (en) |
GB (1) | GB2035505B (en) |
NO (1) | NO793732L (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0609855A1 (en) * | 1993-02-04 | 1994-08-10 | SIGOM S.r.l. | A conveyor sleeve |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB672960A (en) * | 1948-11-04 | 1952-05-28 | Gen Motors Corp | Improved machine for folding sheet material into bellows |
DE842588C (en) * | 1950-01-24 | 1952-06-30 | Gen Motors Corp | Method and machine for folding bellows |
GB680263A (en) * | 1949-09-12 | 1952-10-01 | Gen Motors Corp | Improved machine for folding sheet material into bellows |
DE965485C (en) * | 1951-05-26 | 1957-06-13 | Hans Georg Schauenburg | Harmonica-like foldable weather flute |
US3339004A (en) * | 1966-03-16 | 1967-08-29 | Sweetheart Plastics | Forming of flexible drinking straws |
-
1978
- 1978-11-20 DE DE2850267A patent/DE2850267C2/en not_active Expired
-
1979
- 1979-08-22 GB GB7929303A patent/GB2035505B/en not_active Expired
- 1979-10-17 FR FR7925813A patent/FR2441476A1/en active Granted
- 1979-11-19 NO NO793732A patent/NO793732L/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB672960A (en) * | 1948-11-04 | 1952-05-28 | Gen Motors Corp | Improved machine for folding sheet material into bellows |
GB680263A (en) * | 1949-09-12 | 1952-10-01 | Gen Motors Corp | Improved machine for folding sheet material into bellows |
DE842588C (en) * | 1950-01-24 | 1952-06-30 | Gen Motors Corp | Method and machine for folding bellows |
DE965485C (en) * | 1951-05-26 | 1957-06-13 | Hans Georg Schauenburg | Harmonica-like foldable weather flute |
US3339004A (en) * | 1966-03-16 | 1967-08-29 | Sweetheart Plastics | Forming of flexible drinking straws |
Non-Patent Citations (1)
Title |
---|
EXBK/73 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0609855A1 (en) * | 1993-02-04 | 1994-08-10 | SIGOM S.r.l. | A conveyor sleeve |
Also Published As
Publication number | Publication date |
---|---|
FR2441476B1 (en) | 1984-04-06 |
NO793732L (en) | 1980-05-21 |
GB2035505B (en) | 1982-11-17 |
GB2035505A (en) | 1980-06-18 |
DE2850267A1 (en) | 1980-06-04 |
DE2850267C2 (en) | 1983-01-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |