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US3750073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil bobbin
Assignee: Tamura Corp
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Filing: 1972-05-26
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Granted: 1973-07-31
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Expires: 1992-05-26
Abstract
Abstract This invention relates to a coil bobbin. Said coil bobbin comprises a pair of coil bobbin members identical in shape and each comprising a box-shaped body formed with flanges at opposite ends of the body to define a coil chamber therebetween on the outer periphery of the body, and an insulating frame adapted to mount said pair of coil bobbin members on opposite sides thereof.
Inventors
- 👤 K Okano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:05
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/324; H01F27/325; H01F5/00; H01F5/02; H01F2005/022
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
A coil bobbin comprising a pair of coil bobbin members identical in shape and an insulating frame receiving said coil bobbin members, each of said coil bobbin member having a body formed with a central axial space for receiving therein an iron core and formed with flanges at opposite ends of the body to define a coil chamber therebetween on the outer periphery of the body, said insulating frame having a base formed with a central axial space for receiving therein said iron core and formed on opposite surfaces thereof with side walls extending vertically to define two coil bobbin chambers each disposed on one of the two surfaces of the base, each of said two coil bobbin chambers being formed at one side thereof with an opening for inserting one of the coil bobbin members therethrough into the respective coil bobbin chamber.
Claim 2
Dependent Claim
143 words
A coil bobbin comprising a pair of coil bobbin members identical in shape and an insulating frame receiving said coil bobbin members, each of said coil bobbin member having a body formed with a central axial space for receiving therein an iron core and formed with flanges at opposite ends of the body to define a coil chamber therebetween on the outer periphery of the body, said insulating frame having a base formed with a central axial space for receiving therein said iron core and formed on opposite surfaces thereof with side walls extending vertically to define two coil bobbin chambers each disposed on one of the two surfaces of the base, each of said two coil bobbin chambers being formed at one side thereof with an opening for inserting one of the coil bobbin members therethrough into the respective coil bobbin chamber.
Claim 3
Dependent Claim
75 words
A coil bobbin as claimed in claim 1 wherein one of said two coil bobbin chambers is for secondary coil bobbin and the other is for primary coil bobbin which is required to withstand a higher voltage than the secondary coil bobbin, and one of said openings for said two coil bobbin chambers for inserting the coil bobbin members therethrough is disposed at a side opposite the side at which the other opening is disposed.
Claim 4
Dependent Claim
61 words
A coil bobbin as claimed in claim 2 wherein said side walls extending vertically and defining at least one coil bobbin chamber is formed with a pair of auxiliary wall members extending horizontally inwardly from the top of said side walls and said auxiliary wall members cover a portion of one surface of the flange of said coil bobbin member .
Claim 5
Dependent Claim
87 words
A coil bobbin as claimed in claim 3 further comprising an insulating frame for the iron core having a box-shaped body formed with a central axial space for receiving therein the iron core and received in said central axial spaces of the pair of coil bobBin members and said insulating frame for the coil bobbin members, said body being formed at an upper end thereof with a flange so as to contact with the upper surface of the flange of said one of the coil bobbin members.
Claim 6
Dependent Claim
29 words
A coil bobbin as claimed in claim 4 wherein said flange of the insulating frame for the iron core is formed with side walls disposed at opposite portions thereof.
Claim 7
Dependent Claim
89 words
A coil bobbin as claimed in claim 1 wherein one portion of the flange provided at one end of each of said pair of coil bobbin members is formed therein with a projection, and two openings are formed in the base of the insulating frame having the coil bobbin chambers formed thereon in positions corresponding to the projections formed on the flanges of the coil bobbin members, the said projections formed in the coil bobbin members interfitting with the openings formed in the base plate of the insulating frame.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |