US4347490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low profile transformer
Assignee: PREM MAGNETICS Inc A CORP OF IL
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Filing: 1981-03-06
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Granted: 1982-08-31
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Expires: 2001-03-06
Abstract
Abstract A low profile transformer includes an E - I core having two outer legs and center leg. A pair of connecting pin headers have recesses in friction-fit contact with the inner portions of the outer legs; each header is also recessed, at each end, and is in friction-fit contact with the inner portion of the E-core which joins the legs and the I-bar. A coil wound bobbin on the center core leg has flanges which abut and brace against the pin headers to secure said headers in position. Pins on the headers enable mounting on a printed circuit board.
Inventors
- 👤 David A. Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:49
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/06; H01F27/065; H01F27/24; H01F27/26; H01F27/266; H01F27/28; H01F27/29; H01F27/32; H01F27/324; H01F5/00; H01F5/04; H01F2005/046
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
A low profile transformer comprising in combination, a magnetic core having a stem, two outer legs and a center leg, a window formed between the center leg and each of the outer legs, a bobbin assembly including coil windings thereon received by said center leg, connecting pin headers mounted onto said inner side of said outer legs in said windows, pins connecting to associated electronic circuitry mounted on said headers, and said pin headers, said coil windings and said core being of substantially the same height.
Claim 2
Dependent Claim
86 words
A low profile transformer comprising in combination, a magnetic core having a stem, two outer legs and a center leg, a window formed between the center leg and each of the outer legs, a bobbin assembly including coil windings thereon received by said center leg, connecting pin headers mounted onto said inner side of said outer legs in said windows, pins connecting to associated electronic circuitry mounted on said headers, and said pin headers, said coil windings and said core being of substantially the same height.
Claim 3
Dependent Claim
45 words
A transformer as in claim 1 wherein said pins extend through said headers, and said headers are slidably mounted on the inner side of said legs and positioned in the window, whereby said headers are essentially no higher than the height of said bobbin assembly.
Claim 4
Dependent Claim
46 words
A transformer as in claim 1 wherein the one end of pins mounted on said header terminate in a plane substantially parallel to the maximum height of said header, and the other end of the pins extend downwardly to be insertable into the associated P.C. board.
Claim 5
Dependent Claim
65 words
A transformer as in claim 1 wherein said core further includes an elongated member extending across the open end of said legs, said headers having a first recess accommodating a portion of said outer legs and a second recess accommodating an inner portion of said elongated member and a third recess accommodating an inner portion of said stem whereby the header is secured in position.
Claim 6
Dependent Claim
15 words
A transformer as in claim 4 wherein said recesses are contiguous in the same plane.
Claim 7
Dependent Claim
20 words
A transformer as in claim 1 wherein said headers and the connecting pins thereon are spaced from said bobbin assembly.
Claim 8
Dependent Claim
43 words
A transformer as in claim 1 wherein said headers have depending shoulders on the ends thereof and a reduced intermediate portion wherein said pins are mounted and whereby a passageway is formed by said reduced portion for such as for liquid cleaning solvents.
Claim 9
Dependent Claim
23 words
A transformer as in claim 1 wherein the bobbin includes outwardly extending flanges abutting against said headers and bracing said headers in position.
Claim 10
Dependent Claim
10 words
A transformer as in claim 1 further comprising F-shaped cores.
Claim 11
Dependent Claim
17 words
A transformer as in claim 1 wherein the height of said transformer is less than one-half inch.
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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |