Patent US2747723A successfully refreshed from Google Patents.
US4750101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer apparatus with rectifier
Assignee: Obara Corp
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Filing: 1987-03-24
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Granted: 1988-06-07
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Expires: 2007-03-24
Abstract
Abstract A center-tapped transformer apparatus with rectifiers is adapted to permit first and second secondary electrode plates to be joined with a secondary coil on the fronts of both ends thereof, on the front of the electrode plates of the secondary coil an electrode plate connected to an output terminal, the other rectifier, and a frontal electrode plate electrically connected to the second secondary electrode plate via a connecting tool being arranged in order and bound to each other.
Inventors
- 👤 Tatsuo Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:57
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/29; H01F27/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
A center-tapped transformer apparatus comprising: (a) a transformer body; (b) a secondary coil having first and second ends; (c) first and second electrode plates disposed in front of and respectively joined with the first and second ends of said secondary coil; (d) rectifiers, a first one of said rectifiers being disposed in front of the first electrode plate of said secondary coil for rectifying an AC current from said first electrode plate of said secondary coil; (e) a third electrode plate disposed in front of said first rectifier, a second one of said rectifiers being disposed in the front of said third electrode plate for rectifying the AC current from the second electrode plate; (f) a frontal electrode plate disposed in front of said second rectifier and electrically joined with said second electrode plate; and (g) pressing means including bolts and an associated insulation plate, press plate, and spring for clamping together said first electrode plate, first rectifier, third electrode plate, second rectifier and frontal electrode plate.
Claim 2
Dependent Claim
167 words
A center-tapped transformer apparatus comprising: (a) a transformer body; (b) a secondary coil having first and second ends; (c) first and second electrode plates disposed in front of and respectively joined with the first and second ends of said secondary coil; (d) rectifiers, a first one of said rectifiers being disposed in front of the first electrode plate of said secondary coil for rectifying an AC current from said first electrode plate of said secondary coil; (e) a third electrode plate disposed in front of said first rectifier, a second one of said rectifiers being disposed in the front of said third electrode plate for rectifying the AC current from the second electrode plate; (f) a frontal electrode plate disposed in front of said second rectifier and electrically joined with said second electrode plate; and (g) pressing means including bolts and an associated insulation plate, press plate, and spring for clamping together said first electrode plate, first rectifier, third electrode plate, second rectifier and frontal electrode plate.
Claim 3
Dependent Claim
24 words
A center-tapped transformer apparatus according to claim 1, including an electrically conductive spacer interposed between said second electrode plate and said frontal electrode plate.
Claim 4
Dependent Claim
25 words
A center-tapped transformer apparatus according to claim 1, wherein said frontal electrode plate is Lshaped and connected to said second secondary electrode plate via bolts.
References Cited (Backward Citations)
US3235783A
Cited
US3665287A
Cited
US3826967A
Cited
US4027205A
Cited
US4460956A
Cited
JPS6133620A
Cited
JPS6133621A
Cited
JPS6133622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |