IT1175157B - Mandrel for reinforced cement pipes prodn. - Google Patents

Mandrel for reinforced cement pipes prodn.

Info

Publication number
IT1175157B
IT1175157B IT83617/83A IT8361783A IT1175157B IT 1175157 B IT1175157 B IT 1175157B IT 83617/83 A IT83617/83 A IT 83617/83A IT 8361783 A IT8361783 A IT 8361783A IT 1175157 B IT1175157 B IT 1175157B
Authority
IT
Italy
Prior art keywords
window
test
clip
graphics
objects
Prior art date
Application number
IT83617/83A
Other languages
Italian (it)
Other versions
IT8383617A0 (en
Inventor
Pietro Malnati
Original Assignee
Siome Grandi Impianti Spa
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 Siome Grandi Impianti Spa filed Critical Siome Grandi Impianti Spa
Priority to IT83617/83A priority Critical patent/IT1175157B/en
Publication of IT8383617A0 publication Critical patent/IT8383617A0/en
Application granted granted Critical
Publication of IT1175157B publication Critical patent/IT1175157B/en

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
    • 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
    • B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
    • B28B21/24—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like
    • B28B21/26—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like with a packer head serving as a sliding mould or provided with guiding means for feeding the material
    • 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
    • B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
    • B28B21/24—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like
    • 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
    • B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
    • B28B21/24—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like
    • B28B21/247—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like the rollers of the compaction head being driven, e.g. to overcome or modify the tangential force

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Image Analysis (AREA)
  • Image Generation (AREA)

Abstract

A test window (45) is defined (TEST X, TEST Y) which surrounds a window (X Clip, Y Clip) (the clip window) within which it is desired to render graphical images. Objects are then tested (47) to see if their vertices X0-X3 Y0-Y3 are outside the test window. The utilisation of this test window allows for a performance optimisation to be made between processing of a clipped object by a hardware based graphics subsystem or by graphics software executed by a general purpose CPU which also interfaces to the graphics display. By properly defining the test window size relative to the clip window, objects which fall totally within the test window, will be rendered faster by the graphics subsystem rather than deferring the object to graphics software. Objects with vertices that fall outside the test window would be deferred to graphics software to render.
IT83617/83A 1983-05-20 1983-05-20 Mandrel for reinforced cement pipes prodn. IT1175157B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT83617/83A IT1175157B (en) 1983-05-20 1983-05-20 Mandrel for reinforced cement pipes prodn.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT83617/83A IT1175157B (en) 1983-05-20 1983-05-20 Mandrel for reinforced cement pipes prodn.

Publications (2)

Publication Number Publication Date
IT8383617A0 IT8383617A0 (en) 1983-05-20
IT1175157B true IT1175157B (en) 1987-07-01

Family

ID=11323199

Family Applications (1)

Application Number Title Priority Date Filing Date
IT83617/83A IT1175157B (en) 1983-05-20 1983-05-20 Mandrel for reinforced cement pipes prodn.

Country Status (1)

Country Link
IT (1) IT1175157B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBL20090019A1 (en) * 2009-07-31 2011-02-01 Colle Spa SPINDLE WITH ROLLER PRESSERS WITH VARIABLE ROTATION, PARTICULARLY FOR THE FORMATION OF CONCRETE TUBES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBL20090019A1 (en) * 2009-07-31 2011-02-01 Colle Spa SPINDLE WITH ROLLER PRESSERS WITH VARIABLE ROTATION, PARTICULARLY FOR THE FORMATION OF CONCRETE TUBES

Also Published As

Publication number Publication date
IT8383617A0 (en) 1983-05-20

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