CH512980A - Process for the production of rotationally symmetrical objects by centrifugal casting - Google Patents

Process for the production of rotationally symmetrical objects by centrifugal casting

Info

Publication number
CH512980A
CH512980A CH39870A CH39870A CH512980A CH 512980 A CH512980 A CH 512980A CH 39870 A CH39870 A CH 39870A CH 39870 A CH39870 A CH 39870A CH 512980 A CH512980 A CH 512980A
Authority
CH
Switzerland
Prior art keywords
production
rotationally symmetrical
centrifugal casting
symmetrical objects
objects
Prior art date
Application number
CH39870A
Other languages
German (de)
Inventor
Stoy Vladimir
Stol Miroslav
Prokopova Helena
Kliment Karel
Original Assignee
Ceskoslovenska Akademie Ved
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 Ceskoslovenska Akademie Ved filed Critical Ceskoslovenska Akademie Ved
Publication of CH512980A publication Critical patent/CH512980A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/04—Other methods of shaping glass by centrifuging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/042—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
    • B29C41/045—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry the axis being placed vertically, e.g. spin casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00471—Production of simple or compound lenses made by rotational casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/76—Office equipment or accessories
    • B29L2031/7602—Maps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
CH39870A 1969-01-20 1970-01-13 Process for the production of rotationally symmetrical objects by centrifugal casting CH512980A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS36669 1969-01-20

Publications (1)

Publication Number Publication Date
CH512980A true CH512980A (en) 1971-09-30

Family

ID=5335603

Family Applications (1)

Application Number Title Priority Date Filing Date
CH39870A CH512980A (en) 1969-01-20 1970-01-13 Process for the production of rotationally symmetrical objects by centrifugal casting

Country Status (9)

Country Link
US (1) US3691263A (en)
AT (1) AT320268B (en)
CH (1) CH512980A (en)
DE (1) DE2001764A1 (en)
ES (1) ES375621A1 (en)
FR (1) FR2028738A1 (en)
GB (1) GB1241155A (en)
NL (1) NL150365B (en)
ZA (1) ZA70366B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350029A2 (en) * 1988-07-08 1990-01-10 Ceskoslovenska Akademie Ved Biconvex polymer lenses and their production and use

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948871A (en) * 1972-04-21 1976-04-06 George H. Butterfield And Son Composition for hard type contact lens with wettable surface
US4069280A (en) * 1972-10-20 1978-01-17 Kidder Raymond W Method of making plastic optical fibers
US4217124A (en) * 1973-12-18 1980-08-12 Stephen Wyden Method of forming conoid surfaces
US4208364A (en) * 1976-03-24 1980-06-17 Shepherd Thomas H Process for the production of contact lenses
US4165158A (en) * 1977-07-25 1979-08-21 American Optical Corporation Cast contact lenses and method for making same
US4459246A (en) * 1982-08-26 1984-07-10 Neefe Charles W Molding contact lenses using a directed stream of gas
US4416837A (en) * 1982-09-13 1983-11-22 Neefe Charles W Spin casting of contact lenses
US4636338A (en) * 1985-01-11 1987-01-13 Neefe Charles W Molding toric contact lenses using a directed stream of gas
CS260213B1 (en) * 1986-03-05 1988-12-15 Jiri Sulc Method of polymerization casting of articles especially lenses from hydrophilic gels and equipment for realization of this method
US4820038A (en) * 1986-08-14 1989-04-11 Coopervision, Inc. Hydrogel contact lens
CS272334B1 (en) * 1988-05-13 1991-01-15 Sulc Jiri Method of lenses rotating casting and equipment for realization of this method
CA2009668A1 (en) 1989-02-16 1990-08-16 Ashok R. Thakrar Colored contact lenses and method of making same
US5096627A (en) * 1990-09-17 1992-03-17 Minnesota Mining And Manufacturing Company Method of molding optical recording drums
US5260001A (en) * 1992-08-03 1993-11-09 Bausch & Lomb Incorporated Spincasting process for producing a series of contact lenses having desired shapes
US5598233A (en) * 1994-08-18 1997-01-28 Harold A. Gell Soft contact lens with contamination indicator
US5785905A (en) * 1995-09-11 1998-07-28 Charles Chang Method of making lipstick samplers
US6254243B1 (en) 1999-10-12 2001-07-03 Walter A. Scrivens Composite polymeric reflectors
US6679605B2 (en) * 2000-05-22 2004-01-20 Medennium, Inc. Crystalline polymeric compositions for ophthalmic devices
US6533426B2 (en) * 2001-05-02 2003-03-18 The United States Of America As Represented By The Secretary Of The Air Force Method of centrifugally casting a parabolic membrane mirror having a shape-restorative force
BR0313516A (en) * 2002-08-16 2005-06-14 Johnson & Johnson Vision Care Molds for contact lens production
EP1569786A1 (en) * 2002-12-03 2005-09-07 Koninklijke Philips Electronics N.V. Manufacturing of lens elements
US8318055B2 (en) * 2007-08-21 2012-11-27 Johnson & Johnson Vision Care, Inc. Methods for formation of an ophthalmic lens precursor and lens
US8764425B2 (en) * 2009-02-12 2014-07-01 Picolife Technologies, Llc Mold for making a membrane for use with a flow control system for a micropump
US8790307B2 (en) 2011-12-01 2014-07-29 Picolife Technologies, Llc Drug delivery device and methods therefor
US8771229B2 (en) 2011-12-01 2014-07-08 Picolife Technologies, Llc Cartridge system for delivery of medicament
US10130759B2 (en) 2012-03-09 2018-11-20 Picolife Technologies, Llc Multi-ported drug delivery device having multi-reservoir cartridge system
US9883834B2 (en) 2012-04-16 2018-02-06 Farid Amirouche Medication delivery device with multi-reservoir cartridge system and related methods of use
US10245420B2 (en) 2012-06-26 2019-04-02 PicoLife Technologies Medicament distribution systems and related methods of use
EP3792046A1 (en) * 2019-09-12 2021-03-17 Technische Hochschule Wildau Method for producing asymmetric or aspheric lenses and light unit with such a produced lens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350029A2 (en) * 1988-07-08 1990-01-10 Ceskoslovenska Akademie Ved Biconvex polymer lenses and their production and use
EP0350029A3 (en) * 1988-07-08 1991-04-24 Ceskoslovenska Akademie Ved Biconvex polymer lenses and their production and use

Also Published As

Publication number Publication date
ES375621A1 (en) 1972-10-16
GB1241155A (en) 1971-07-28
NL150365B (en) 1976-08-16
FR2028738A1 (en) 1970-10-16
DE2001764A1 (en) 1970-09-03
AT320268B (en) 1975-02-10
ZA70366B (en) 1971-08-25
US3691263A (en) 1972-09-12
NL7000791A (en) 1970-07-22

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Legal Events

Date Code Title Description
PL Patent ceased