CA1124468A - Methode et dispositif de reproduction de disques video a trou central - Google Patents

Methode et dispositif de reproduction de disques video a trou central

Info

Publication number: CA1124468A
Authority: CA; Canada
Prior art keywords: mold half; cooling; molding; sprue; channels
Prior art date: 1977-10-31
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

CA363,138A

Other languages

English (en)

Inventor

Roy G. Jordan

John R. Holmes

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.)

Discovision Associates

Original Assignee

Discovision Associates

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.)

1977-10-31

Filing date

1980-10-23

Publication date

1982-06-01

1978-08-25 Priority claimed from CA310,055A external-priority patent/CA1102973A/fr

1980-10-23 Application filed by Discovision Associates filed Critical Discovision Associates

1980-10-23 Priority to CA363,138A priority Critical patent/CA1124468A/fr

1982-06-01 Application granted granted Critical

1982-06-01 Publication of CA1124468A publication Critical patent/CA1124468A/fr

Status Expired legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims abstract description 14
230000003362 replicative effect Effects 0.000 title description 4
238000001816 cooling Methods 0.000 claims abstract description 68
238000000465 moulding Methods 0.000 claims abstract description 48
239000007924 injection Substances 0.000 claims abstract description 28
238000002347 injection Methods 0.000 claims abstract description 28
230000033001 locomotion Effects 0.000 claims description 21
238000001746 injection moulding Methods 0.000 claims description 17
239000000203 mixture Substances 0.000 claims description 15
239000012809 cooling fluid Substances 0.000 claims description 14
239000000463 material Substances 0.000 abstract description 25
230000002093 peripheral effect Effects 0.000 abstract description 9
230000000284 resting effect Effects 0.000 abstract description 3
230000000712 assembly Effects 0.000 abstract description 2
238000000429 assembly Methods 0.000 abstract description 2
230000007812 deficiency Effects 0.000 abstract 1
230000002950 deficient Effects 0.000 abstract 1
238000005516 engineering process Methods 0.000 abstract 1
208000006011 Stroke Diseases 0.000 description 21
239000000543 intermediate Substances 0.000 description 20
229940090044 injection Drugs 0.000 description 18
239000012530 fluid Substances 0.000 description 14
238000004080 punching Methods 0.000 description 10
239000012768 molten material Substances 0.000 description 7
125000006850 spacer group Chemical group 0.000 description 7
238000000149 argon plasma sintering Methods 0.000 description 5
230000008859 change Effects 0.000 description 4
235000019628 coolness Nutrition 0.000 description 4
239000012899 standard injection Substances 0.000 description 4
230000015572 biosynthetic process Effects 0.000 description 3
239000012535 impurity Substances 0.000 description 3
230000007246 mechanism Effects 0.000 description 3
230000004044 response Effects 0.000 description 3
238000012937 correction Methods 0.000 description 2
238000013461 design Methods 0.000 description 2
239000012943 hotmelt Substances 0.000 description 2
230000013011 mating Effects 0.000 description 2
230000003287 optical effect Effects 0.000 description 2
101000701876 Homo sapiens Serpin A9 Proteins 0.000 description 1
235000018734 Sambucus australis Nutrition 0.000 description 1
244000180577 Sambucus australis Species 0.000 description 1
230000008901 benefit Effects 0.000 description 1
230000005540 biological transmission Effects 0.000 description 1
239000000969 carrier Substances 0.000 description 1
238000005266 casting Methods 0.000 description 1
230000002301 combined effect Effects 0.000 description 1
238000004891 communication Methods 0.000 description 1
230000000875 corresponding effect Effects 0.000 description 1
230000007547 defect Effects 0.000 description 1
238000009826 distribution Methods 0.000 description 1
230000000694 effects Effects 0.000 description 1
230000001747 exhibiting effect Effects 0.000 description 1
230000005484 gravity Effects 0.000 description 1
102000050111 human SERPINA9 Human genes 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
239000002245 particle Substances 0.000 description 1
238000000926 separation method Methods 0.000 description 1
230000003068 static effect Effects 0.000 description 1
238000013022 venting Methods 0.000 description 1
230000000007 visual effect Effects 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1

Classifications

- 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
- B29L2017/00—Carriers for sound or information
- B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
- B29L2017/003—Records or discs
- B29L2017/005—CD''s, DVD''s

Landscapes

Moulds For Moulding Plastics Or The Like (AREA)

CA363,138A 1977-10-31 1980-10-23 Methode et dispositif de reproduction de disques video a trou central Expired CA1124468A (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
CA363,138A CA1124468A (fr)	1977-10-31	1980-10-23	Methode et dispositif de reproduction de disques video a trou central

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
US84736777A	1977-10-31	1977-10-31
US847,367		1977-10-31
CA310,055A CA1102973A (fr)	1977-10-31	1978-08-25	Methode et moyen de reproduire des disques video a ouverture au centre
CA363,138A CA1124468A (fr)	1977-10-31	1980-10-23	Methode et dispositif de reproduction de disques video a trou central

Publications (1)

Publication Number	Publication Date
CA1124468A true CA1124468A (fr)	1982-06-01

Family

ID=27165824

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA363,138A Expired CA1124468A (fr)	1977-10-31	1980-10-23	Methode et dispositif de reproduction de disques video a trou central

Country Status (1)

Country	Link
CA (1)	CA1124468A (fr)

1980
- 1980-10-23 CA CA363,138A patent/CA1124468A/fr not_active Expired

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Legal Events

Date	Code	Title	Description
1999-06-01	MKEX	Expiry