Patent US4408176A successfully refreshed from Google Patents.
US4408176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flyback transformer
Assignee: Sanyo Electric Co Ltd
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Filing: 1981-03-12
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Granted: 1983-10-04
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Expires: 2001-03-12
Abstract
Abstract A flyback transformer includes a casing and a coil-block accommodated in the casing. The casing has a guide opening communicating between inside and outside of the casing. The coil-block has a tongue portion which is formed with an opening. A cap member made of brass is supported in the opening of the tongue portion with an opening of the cap member being in alignment with the guide opening. The outside of the cap member is electrically connected to a wire extending from the coil-block and inside the cap member fittingly receives a lead wire which has been inserted into the casing through said guide opening.
Inventors
- 👤 Kengi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:28
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/42; H01F5/00; H01F5/02; H01F2005/022
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
202 words
A electrical connecting apparatus for use in effecting an electrical connection between an electrical device positioned within a casing and a lead wire extending from said casing, said electrical connecting apparatus comprising: a chamber formed within a casing, said device being positioned within said casing, said casing having at least one guide opening that communicates from the chamber to the outside of said casing; a tongue portion extending from said device, said tongue portion having an opening defined therein, said opening being in alignment with said guide opening; a cap member made of an electrically conductive material and having a body portion and a bore defined therein, one end of said bore being opened, said cap member being inserted into said opening of said tongue portion with said open end of said bore facing said guide opening; electrical connecting means for connecting said cap member and said device; wherein a lead wire extending from the casing has one end portion inserted into said bore through said guide opening for effecting an electric connection between said lead wire and said device, and the other end portion of said lead wire extending outwardly from the casing; and a cast-in material injected into said chamber.
Claim 2
Dependent Claim
202 words
A electrical connecting apparatus for use in effecting an electrical connection between an electrical device positioned within a casing and a lead wire extending from said casing, said electrical connecting apparatus comprising: a chamber formed within a casing, said device being positioned within said casing, said casing having at least one guide opening that communicates from the chamber to the outside of said casing; a tongue portion extending from said device, said tongue portion having an opening defined therein, said opening being in alignment with said guide opening; a cap member made of an electrically conductive material and having a body portion and a bore defined therein, one end of said bore being opened, said cap member being inserted into said opening of said tongue portion with said open end of said bore facing said guide opening; electrical connecting means for connecting said cap member and said device; wherein a lead wire extending from the casing has one end portion inserted into said bore through said guide opening for effecting an electric connection between said lead wire and said device, and the other end portion of said lead wire extending outwardly from the casing; and a cast-in material injected into said chamber.
Claim 3
Dependent Claim
191 words
A flyback transformer comprising: a casing having a chamber formed therein and at least one guide opening that communicates from the chamber to the outside of said casing; a coil-block housed in said chamber of said casing, said coil-block comprising: (i) at least one bobbin having a tongue portion extending from said bobbin, said tongue portion having an opening defined therein, said opening being in alignment with said guide opening; (ii) a series of coils wound on said bobbin; (iii) a cap member made of an electrically conductive material having a body portion and a bore defined therein, one end of said bore being opened, said cap member inserted into said opening of said tongue portion with said open end of said bore facing said guide opening; and (iv) electrical connecting means for connecting said cap member and one of said coils; lead wire having one end portion inserted into said bore through said guide opening for effecting an electric connection between said lead wire and said coil, and the other end portion of said lead wire extending outwardly from the casing; and a first cast-in material injected into said chamber.
Claim 4
Dependent Claim
191 words
A flyback transformer comprising: a casing having a chamber formed therein and at least one guide opening that communicates from the chamber to the outside of said casing; a coil-block housed in said chamber of said casing, said coil-block comprising: (i) at least one bobbin having a tongue portion extending from said bobbin, said tongue portion having an opening defined therein, said opening being in alignment with said guide opening; (ii) a series of coils wound on said bobbin; (iii) a cap member made of an electrically conductive material having a body portion and a bore defined therein, one end of said bore being opened, said cap member inserted into said opening of said tongue portion with said open end of said bore facing said guide opening; and (iv) electrical connecting means for connecting said cap member and one of said coils; lead wire having one end portion inserted into said bore through said guide opening for effecting an electric connection between said lead wire and said coil, and the other end portion of said lead wire extending outwardly from the casing; and a first cast-in material injected into said chamber.
Claim 5
Dependent Claim
45 words
A flyback transformer as claimed in claim 2, wherein said casing further comprises a funnel portion formed in said guide opening such that a tapered end of said funnel portion directs the chamber of said casing, thereby guiding said lead wire through said funnel portion.
Claim 6
Dependent Claim
39 words
A flyback transformer as claimed in claim 3, wherein said tongue portion has an annular wall formed coaxially around said opening, said annular wall fittingly engages with tapered end of said funnel portion for substantially closing said guide opening.
Claim 7
Dependent Claim
23 words
A flyback transformer as claimed in claim 4, further comprising a second cast-in material injected into said funnel portion through said guide opening.
Claim 8
Dependent Claim
36 words
A flyback transformer as claimed in claim 5, wherein said funnel portion is formed with at least one groove formed on the inner surface thereof for the transmital of said second cast-in material into said bore.
Claim 9
Dependent Claim
73 words
A flyback transformer as claimed in claim 2, wherein said opening formed in said tongue portion is tapered in thickness direction of said tongue portion such that the diameter of said opening at a portion facing the guide opening is greater than the outer diameter of said cap member and the diameter of said opening at a portion remote from the guide opening is smaller than the outer diameter of said cap member.
Claim 10
Dependent Claim
26 words
A flyback transformer as claimed in claim 2, wherein said bore formed in said cap member is closed at the end opposite to said open end.
Claim 11
Dependent Claim
17 words
A flyback transformer as claimed in claim 8, wherein said cap member is tapered towards closed end.
Claim 12
Dependent Claim
20 words
A flyback transformer as claimed in claim 2, wherein said electrical connecting means is any one of resistor and diode.
Claim 13
Dependent Claim
21 words
A flyback transformer as claimed in claim 2, wherein said electrical connecting means is a series connection of resistor and diode.
Claim 14
Dependent Claim
19 words
A flyback transformer as claimed in claim 2, wherein said cap member has a flange at its open end.
Claim 15
Dependent Claim
20 words
A flyback transformer as claimed in claim 2, wherein said bobbin has a flange from which said tongue portion extends.
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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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |