US4912372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power circuit for series connected loads
Assignee: OCEM ACQUISITION CORP
•
Filing: 1988-11-28
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Granted: 1990-03-27
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Expires: 2008-11-28
Abstract
Abstract A power circuit for N series connected loads according to the present invention includes N transformers having primary windings connected in series across a constant current AC source and secondary windings connected in series with the N loads. N-1 conductors are coupled from a junction between the loads to a corresponding junction between the secondary windings. Failure of one of the loads resulting in an open circuit will not interrupt power to the remaining loads.
Inventors
- 👤 Michael A. Mongoven
- 👤 James P. McGee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:20
CPC Classifications
H; H05; H05B; H05B47/00; H05B47/20; H05B47/23
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
116 words
A circuit for powering from a constant current AC source serially connected loads with a junction formed between each two adjacent loads, comprising: a plurality of transformers, equal in number to the number of loads, each transformer having a primary winding and a secondary winding wherein the primary windings are connected in series with the constant current AC source and the secondary windings are connected serially with a junction formed between each two adjacent secondary windings, and the secondary windings connected in series with the loads; a plurality of connectors, equal in number to one less than the number of loads, coupling each junction between two adjacent loads to a junction between two adjacent secondary windings.
Claim 2
Dependent Claim
116 words
A circuit for powering from a constant current AC source serially connected loads with a junction formed between each two adjacent loads, comprising: a plurality of transformers, equal in number to the number of loads, each transformer having a primary winding and a secondary winding wherein the primary windings are connected in series with the constant current AC source and the secondary windings are connected serially with a junction formed between each two adjacent secondary windings, and the secondary windings connected in series with the loads; a plurality of connectors, equal in number to one less than the number of loads, coupling each junction between two adjacent loads to a junction between two adjacent secondary windings.
Claim 3
Dependent Claim
17 words
The power circuit of claim 1 where the the transformers have matched current ratings with the loads.
Claim 4
Dependent Claim
15 words
The power circuit of claim 1 where the current ratings of the loads are identical.
Claim 5
Dependent Claim
11 words
The power circuit of claim 1 where the connectors are conductors.
Claim 6
Dependent Claim
25 words
The power circuit of claim 4 where the constant current AC source operates at a frequency where the impedance of the conductors is substantially zero.
Claim 7
Dependent Claim
117 words
A circuit for powering from a constant current AC source serially connected lamps with a junction formed between each two adjacent lamps, comprising: a plurality of transformers, equal in number to the number of lamps, each transformer having a primary winding and a secondary winding wherein the primary windings are connected in series with the constant current AC source and the secondary windings are connected serially with a junction formed between each two adjacent secondary windings, and the secondary windings connected in series with the loads; a plurality of connectors, equal in number to one less than the number of loads, coupling each junction between two adjacent lamps to a corresponding junction between two adjacent secondary windings.
Claim 8
Dependent Claim
117 words
A circuit for powering from a constant current AC source serially connected lamps with a junction formed between each two adjacent lamps, comprising: a plurality of transformers, equal in number to the number of lamps, each transformer having a primary winding and a secondary winding wherein the primary windings are connected in series with the constant current AC source and the secondary windings are connected serially with a junction formed between each two adjacent secondary windings, and the secondary windings connected in series with the loads; a plurality of connectors, equal in number to one less than the number of loads, coupling each junction between two adjacent lamps to a corresponding junction between two adjacent secondary windings.
Claim 9
Dependent Claim
15 words
The power circuit of claim 6 where the transformers are located remote from the lamps.
Claim 10
Dependent Claim
11 words
The power circuit of claim 7 where the connectors are conductors.
Claim 11
Dependent Claim
27 words
The power circuit of claim 8 where the lamps are installed on a plurality of towers and where a portion of the conductors extends up each tower.
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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) | 1993-03-26 | 1993-09-25 | 1994-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-26 | 1997-09-25 | 1998-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-26 | 2001-09-25 | 2002-03-27 | $7700.00 | Window Closed / Lapsed |