EP0127593A3 - Device which can be enlarged with a controlled expansion - Google Patents
Device which can be enlarged with a controlled expansion Download PDFInfo
- Publication number
- EP0127593A3 EP0127593A3 EP84830157A EP84830157A EP0127593A3 EP 0127593 A3 EP0127593 A3 EP 0127593A3 EP 84830157 A EP84830157 A EP 84830157A EP 84830157 A EP84830157 A EP 84830157A EP 0127593 A3 EP0127593 A3 EP 0127593A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- enlarged
- controlled expansion
- bearing structure
- movable element
- concrete
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
- B28B21/18—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/86—Cores
- B28B21/88—Cores adjustable, collapsible or expansible
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Reinforcement Elements For Buildings (AREA)
- Springs (AREA)
Abstract
This invention is embodied with a device (10) which can
be enlarged with a controlled expansion and is suitable for
carrying out a method for the moulding of concrete and which
can process simple or reinforced concrete and comprises:
- impermeable, resilient sheath means (11) cooperating with at least one movable element (13-113), and
- a bearing structure (12),
at least one enlargeable element (14-114) being included between the bearing structure (12) of the device (10) and the movable element (13).
- impermeable, resilient sheath means (11) cooperating with at least one movable element (13-113), and
- a bearing structure (12),
at least one enlargeable element (14-114) being included between the bearing structure (12) of the device (10) and the movable element (13).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8304821A IT1208962B (en) | 1983-05-30 | 1983-05-30 | EXPANDABLE ELEMENT WITH CONTROLLED EXPANSION AND AGENT BY MEANS OF PRESSURIZED FLUIDS. |
IT482183 | 1983-05-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0127593A2 EP0127593A2 (en) | 1984-12-05 |
EP0127593A3 true EP0127593A3 (en) | 1985-08-07 |
Family
ID=11114336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84830157A Withdrawn EP0127593A3 (en) | 1983-05-30 | 1984-05-21 | Device which can be enlarged with a controlled expansion |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0127593A3 (en) |
JP (1) | JPS606410A (en) |
ES (1) | ES532898A0 (en) |
IT (1) | IT1208962B (en) |
PT (1) | PT78663B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NZ216568A (en) * | 1985-06-18 | 1988-07-28 | Graeme Reginald Hume | Casting concrete pipes around expandable mandrel |
JPH0371808A (en) * | 1989-08-10 | 1991-03-27 | Natl House Ind Co Ltd | Manufacture of concrete member |
ES2061359B1 (en) * | 1992-07-02 | 1997-04-01 | Lopez Victor Pena | RECOVERABLE MOLD FOR THE CONSTRUCTION "IN SITU" OF CONCRETE NICHES. |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE419216A (en) * | ||||
US2170188A (en) * | 1937-10-30 | 1939-08-22 | Walter H Cobi | Collapsible core |
DE714213C (en) * | 1936-03-06 | 1941-11-24 | Zeppelin Wohlfahrt G M B H | Expandable core for the production of hollow blocks |
US2315634A (en) * | 1941-06-23 | 1943-04-06 | Harold C Mccall | Expansible core mold |
US2730783A (en) * | 1950-10-12 | 1956-01-17 | Lock Joint Pipe Co | Apparatus for forming concrete pipes and other hollow bodies |
FR1122008A (en) * | 1955-01-31 | 1956-08-30 | Expandable core for the production of well-defined products from powdery materials | |
US3021900A (en) * | 1957-10-10 | 1962-02-20 | Marchioli Giorgio | Apparatus for manufacturing pipes from plastic materials |
FR2023212A1 (en) * | 1968-11-13 | 1970-08-07 | Seelze & Eichriede Fulgurit | |
FR2291332A1 (en) * | 1974-11-13 | 1976-06-11 | Reymann Wolfgang | Hollow building component core shuttering - dimensions adjustable by mechanismon internal supporting body |
-
1983
- 1983-05-30 IT IT8304821A patent/IT1208962B/en active
-
1984
- 1984-05-21 EP EP84830157A patent/EP0127593A3/en not_active Withdrawn
- 1984-05-29 PT PT78663A patent/PT78663B/en unknown
- 1984-05-29 ES ES532898A patent/ES532898A0/en active Granted
- 1984-05-29 JP JP59107658A patent/JPS606410A/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE419216A (en) * | ||||
DE714213C (en) * | 1936-03-06 | 1941-11-24 | Zeppelin Wohlfahrt G M B H | Expandable core for the production of hollow blocks |
US2170188A (en) * | 1937-10-30 | 1939-08-22 | Walter H Cobi | Collapsible core |
US2315634A (en) * | 1941-06-23 | 1943-04-06 | Harold C Mccall | Expansible core mold |
US2730783A (en) * | 1950-10-12 | 1956-01-17 | Lock Joint Pipe Co | Apparatus for forming concrete pipes and other hollow bodies |
FR1122008A (en) * | 1955-01-31 | 1956-08-30 | Expandable core for the production of well-defined products from powdery materials | |
US3021900A (en) * | 1957-10-10 | 1962-02-20 | Marchioli Giorgio | Apparatus for manufacturing pipes from plastic materials |
FR2023212A1 (en) * | 1968-11-13 | 1970-08-07 | Seelze & Eichriede Fulgurit | |
FR2291332A1 (en) * | 1974-11-13 | 1976-06-11 | Reymann Wolfgang | Hollow building component core shuttering - dimensions adjustable by mechanismon internal supporting body |
Also Published As
Publication number | Publication date |
---|---|
IT8304821A0 (en) | 1983-05-30 |
ES8504005A1 (en) | 1985-04-16 |
PT78663B (en) | 1986-08-08 |
PT78663A (en) | 1984-06-01 |
ES532898A0 (en) | 1985-04-16 |
IT1208962B (en) | 1989-07-10 |
EP0127593A2 (en) | 1984-12-05 |
JPS606410A (en) | 1985-01-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19860408 |