[go: up one dir, main page]

GB2048760B - Producing information records having moulded-in centre holes - Google Patents

Producing information records having moulded-in centre holes

Info

Publication number
GB2048760B
GB2048760B GB8012120A GB8012120A GB2048760B GB 2048760 B GB2048760 B GB 2048760B GB 8012120 A GB8012120 A GB 8012120A GB 8012120 A GB8012120 A GB 8012120A GB 2048760 B GB2048760 B GB 2048760B
Authority
GB
United Kingdom
Prior art keywords
moulded
information records
producing information
centre holes
centre
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.)
Expired
Application number
GB8012120A
Other versions
GB2048760A (en
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Priority to GB8012120A priority Critical patent/GB2048760B/en
Publication of GB2048760A publication Critical patent/GB2048760A/en
Application granted granted Critical
Publication of GB2048760B publication Critical patent/GB2048760B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
GB8012120A 1979-04-30 1980-04-11 Producing information records having moulded-in centre holes Expired GB2048760B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8012120A GB2048760B (en) 1979-04-30 1980-04-11 Producing information records having moulded-in centre holes

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB7914992 1979-04-30
US9301279A 1979-11-09 1979-11-09
GB8012120A GB2048760B (en) 1979-04-30 1980-04-11 Producing information records having moulded-in centre holes

Publications (2)

Publication Number Publication Date
GB2048760A GB2048760A (en) 1980-12-17
GB2048760B true GB2048760B (en) 1983-08-24

Family

ID=27260714

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8012120A Expired GB2048760B (en) 1979-04-30 1980-04-11 Producing information records having moulded-in centre holes

Country Status (1)

Country Link
GB (1) GB2048760B (en)

Also Published As

Publication number Publication date
GB2048760A (en) 1980-12-17

Similar Documents

Publication Publication Date Title
GB2006508B (en) Magtenic recording media
JPS52114306A (en) Information record
GB2027919B (en) Composite information recording
JPS5661075A (en) Recording disk
GB2052123B (en) Time recorder
GB2064847B (en) Recording medium
GB2043323B (en) Gramophone record players
JPS5616990A (en) Digital information recorder
DE3068782D1 (en) Information recording element
GB2057745B (en) Pcm record reproducer
JPS53122403A (en) Information recorder
JPS5461908A (en) Information reproducer
JPS54128347A (en) Heattsensitive record
GB2067771B (en) Producing microfiche records
GB2017380A (en) Record disc arrangements
AU514899B2 (en) High density information record
GB2045505B (en) Phonograph
JPS5641563A (en) Reproducer
DE3067631D1 (en) Information transducing apparatus
JPS5640580A (en) Data recorder
GB2056120B (en) Record players
JPS57111840A (en) Information record
JPS5461910A (en) Information reproducer
JPS5466105A (en) Information reproducer
DE3060735D1 (en) Phonograph

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee