CH450489A - Method of manufacturing a pole piece for a magnetic sound head - Google Patents

Method of manufacturing a pole piece for a magnetic sound head

Info

Publication number: CH450489A
Authority: CH; Switzerland
Prior art keywords: manufacturing; pole piece; sound head; magnetic sound; magnetic
Prior art date: 1965-07-13

Application number

CH1002466A

Other languages

German (de)

Inventor

Bouwma Jan

Original Assignee

Philips Nv

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.)

1965-07-13

Filing date

1966-07-11

Publication date

1968-01-31

1966-07-11 Application filed by Philips Nv filed Critical Philips Nv

1968-01-31 Publication of CH450489A publication Critical patent/CH450489A/en

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/193—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being ferrite or other magnetic particles
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Magnetic Heads (AREA)

CH1002466A 1965-07-13 1966-07-11 Method of manufacturing a pole piece for a magnetic sound head CH450489A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL6508992A NL6508992A (en)	1965-07-13	1965-07-13

Publications (1)

Publication Number	Publication Date
CH450489A true CH450489A (en)	1968-01-31

Family

ID=19793626

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH1002466A CH450489A (en)	1965-07-13	1966-07-11	Method of manufacturing a pole piece for a magnetic sound head

Country Status (7)

Country	Link
AT (1)	AT280644B (en)
BE (1)	BE683927A (en)
CH (1)	CH450489A (en)
DE (1)	DE1547045B2 (en)
GB (1)	GB1148587A (en)
NL (1)	NL6508992A (en)
SE (1)	SE328725B (en)

1965
- 1965-07-13 NL NL6508992A patent/NL6508992A/xx unknown
1966
- 1966-07-08 GB GB3077266A patent/GB1148587A/en not_active Expired
- 1966-07-11 DE DE1966N0028827 patent/DE1547045B2/en active Granted
- 1966-07-11 BE BE683927D patent/BE683927A/xx unknown
- 1966-07-11 AT AT662966A patent/AT280644B/en not_active IP Right Cessation
- 1966-07-11 CH CH1002466A patent/CH450489A/en unknown
- 1966-07-11 SE SE948066A patent/SE328725B/xx unknown

Also Published As

Publication number	Publication date
DE1547045A1 (en)	1970-10-22
GB1148587A (en)	1969-04-16
NL6508992A (en)	1967-01-16
AT280644B (en)	1970-04-27
SE328725B (en)	1970-09-21
DE1547045B2 (en)	1976-07-22
BE683927A (en)	1967-01-11

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