US3686751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a magnetic head
Assignee: Pioneer Corp
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Filing: 1970-05-25
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Granted: 1972-08-29
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Expires: 1990-05-25
Abstract
Abstract A requisite number of bezels or recesses in a non-permeable substance holding member, for example, a ceramic glass, are filled with magnetic chips, and the non-permeable substance is crystallized or sintered. In process of crystallizing or sintering, the non-permeable substance contracts and firmly holds the magnetic chips. Preferably, some glaze is previously put in the gap between a wall of the bezel and the chip. Magnetoelectric converting means, for example, a Hall element, is vapor deposited onto each chip and aligned so as to correspond with each track of a magnetic tape. And then the other non-permeable substance holding member which holds one or more magnetic substance chips with, correspondingly, the magneto-electric converting means is united with the above-mentioned non-permeable substance holding member in order that each magneto-electric converting means is positioned in a gap between the corresponding chips, and a magnetic circuit is formed.
Inventors
- 👤 Keiji Sugiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:57
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/33; G11B5/37; G11B5/376; G11B5/378; G11B5/332; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49055; Y10T29/49059
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
122 words
A method of manufacturing a magnetic head comprising the steps of: providing a recess within a surface of a holding member made of a non-permeable substance which contracts during crystallizing, placing a high permeable magnetic chip formed slightly smaller than the size of the recess within the same, crystallizing the holding member to cause the contracting holding member to firmly hold the high permeable magnetic chip, vapor depositing a magneto-electric converting means onto the high permeable magnetic chip, providing necessary leads and terminals for the chip on the holding member, and uniting the holding member with another aligned holding member which holds a similar high permeable magnetic chip in face abutting, aligned position with the abovementioned chip to form a magnetic circuit.
Claim 2
Independent Claim
122 words
A method of manufacturing a magnetic head comprising the steps of: providing a recess within a surface of a holding member made of a non-permeable substance which contracts during crystallizing, placing a high permeable magnetic chip formed slightly smaller than the size of the recess within the same, crystallizing the holding member to cause the contracting holding member to firmly hold the high permeable magnetic chip, vapor depositing a magneto-electric converting means onto the high permeable magnetic chip, providing necessary leads and terminals for the chip on the holding member, and uniting the holding member with another aligned holding member which holds a similar high permeable magnetic chip in face abutting, aligned position with the abovementioned chip to form a magnetic circuit.
Claim 3
Independent Claim
148 words
A method of manufacturing a magnetic head comprising the steps of: providing at least one recess in a holding member which made of a non-permeable substance, such as a ceramic glass or a ceramic, which contracts in the process of crystallizing, placing a glaze, which melts at a lower temperature than the crystallizing temperature of the holding member, into the recess, placing a high permeable magnetic chip formed slightly smaller than the volume of the recess with the glaze within the recess, crystallizing the holding member to firmly hold the high permeable magnetic chip, evaporating a magneto-electric converting means onto the high permeable magnetic chip, providing necessary leads and terminals for the chip on the holding member, and uniting the holding member to another holding member which holds a similar high permeable magnetic chip in face abutting, aligned position with the abovementioned chip to form a magnetic circuit.
Claim 4
Independent Claim
148 words
A method of manufacturing a magnetic head comprising the steps of: providing at least one recess in a holding member which made of a non-permeable substance, such as a ceramic glass or a ceramic, which contracts in the process of crystallizing, placing a glaze, which melts at a lower temperature than the crystallizing temperature of the holding member, into the recess, placing a high permeable magnetic chip formed slightly smaller than the volume of the recess with the glaze within the recess, crystallizing the holding member to firmly hold the high permeable magnetic chip, evaporating a magneto-electric converting means onto the high permeable magnetic chip, providing necessary leads and terminals for the chip on the holding member, and uniting the holding member to another holding member which holds a similar high permeable magnetic chip in face abutting, aligned position with the abovementioned chip to form a magnetic circuit.
Claim 5
Dependent Claim
45 words
A method of manufacturing a magnetic head as set forth in claim 2, wherein, with the crystallizing temperature T1 of the holding member, the melting temperature T2 of the glaze and the evaporating temperature T3, a relation such as T1 > T2 > T3 exists.
Claim 6
Dependent Claim
22 words
A method of manufacturing a magnetic head as set forth in claim 1, wherein said magneto-electric converting means is a Hall element.
Claim 7
Dependent Claim
22 words
A method of manufacturing a magnetic head as set forth in claim 2, wherein said magneto-electric converting means is a Hall element.
Claim 8
Independent Claim
122 words
A method of manufacturing a magnetic head comprising the steps of: providing a recess within a surface of a holding member made of a non-permeable substance which contracts during sintering, placing a high permeable magnetic chip formed slightly smaller than the size of the recess within the same, sintering the holding member to cause the contracting holding member to firmly hold the high permeable magnetic chip, vapor depositing a magneto-electric converting means onto the high permeable magnetic chip, providing necessary leads and terminals for the chip on the holding member, and uniting the holding member with another aligned holding member which holds a similar high permeable magnetic chip in face abutting, aligned position with the abovementioned chip to form a magnetic circuit.
Claim 9
Independent Claim
122 words
A method of manufacturing a magnetic head comprising the steps of: providing a recess within a surface of a holding member made of a non-permeable substance which contracts during sintering, placing a high permeable magnetic chip formed slightly smaller than the size of the recess within the same, sintering the holding member to cause the contracting holding member to firmly hold the high permeable magnetic chip, vapor depositing a magneto-electric converting means onto the high permeable magnetic chip, providing necessary leads and terminals for the chip on the holding member, and uniting the holding member with another aligned holding member which holds a similar high permeable magnetic chip in face abutting, aligned position with the abovementioned chip to form a magnetic circuit.
Claim 10
Independent Claim
149 words
A method of manufacturing a magnetic head comprising the steps of: proViding at least one recess in a holding member which is made of a non-permeable substance, such as a ceramic glass of a ceramic, which contracts in the process of sintering, placing a glaze, which melts at a lower temperature than the sintering temperature of the holding member, into the recess, placing a high permeable magnetic chip formed slightly smaller than the volume of the recess with the glaze within the recess, sintering the holding member to firmly hold the high permeable magnetic chip, evaporating a magneto-electric converting means onto the high permeable magnetic chip, providing necessary leads and terminals for the chip on the holding member, and uniting the holding member to another holding member which holds a similar high permeable magnetic chip in face abutting, aligned position with the abovementioned chip to form a magnetic circuit.
Claim 11
Independent Claim
149 words
A method of manufacturing a magnetic head comprising the steps of: proViding at least one recess in a holding member which is made of a non-permeable substance, such as a ceramic glass of a ceramic, which contracts in the process of sintering, placing a glaze, which melts at a lower temperature than the sintering temperature of the holding member, into the recess, placing a high permeable magnetic chip formed slightly smaller than the volume of the recess with the glaze within the recess, sintering the holding member to firmly hold the high permeable magnetic chip, evaporating a magneto-electric converting means onto the high permeable magnetic chip, providing necessary leads and terminals for the chip on the holding member, and uniting the holding member to another holding member which holds a similar high permeable magnetic chip in face abutting, aligned position with the abovementioned chip to form a magnetic circuit.
Claim 12
Dependent Claim
45 words
The method of manufacturing a magnetic head as set forth in claim 7, wherein, with the sintering temperature T1 of the holding member, the melting temperature T2 of the glaze and the evaporating temperature T3, a relation such as T1 > T2 > T3 exists.
Claim 13
Dependent Claim
22 words
The method of manufacturing a magnetic head as set forth in claim 6, wherein said magneto-electric converting means is a Hall element.
Claim 14
Dependent Claim
22 words
The method of manufacturing a magnetic head as set forth in claim 7, wherein said magneto-electric converting means is a Hall element.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |