Patent US4833337A successfully refreshed from Google Patents.
US4833337A
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Inductive coupled power system
Assignee: Sundstrand Corp
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Filing: 1988-07-21
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Granted: 1989-05-23
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Expires: 2008-07-21
Abstract
Abstract An inductive coupled power system has a transmission circuit with a dual primary comprising two conductor loops. First segments of the loops extend through an area served by the system adjacent each other and second segments of the loops extend through the area one on either side of the adjacent first segments. A small loop configuration minimizes the stray magnetic field. A secondary pickup assembly has a U-shaped core with two legs which embrace the first segments of the two loops and a core element adjacent the first loop segments is positioned between the ends of the legs. Each of the power circuits of a plurality of loads includes a shunt regulator.
Inventors
- 👤 Arthur W. Kelley
- 👤 William R. Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:40
CPC Classifications
H; H02; H02J; H02J1/00; H01; H01F; H01F30/00; H01F30/06; H01F30/10; H01F38/00; H01F38/20; H01F38/22; H01F38/28; H01F38/30; H01F38/305
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
101 words
In a system for inductive coupling of AC power from a source having two terminals to each of a plurality of receiver units, a transmission circuit, comprising: two conductor loops connected with said source and extending through an area containing said receiver units, a first segment of the two loops being connected with one source terminal and a second segment of each loop being connected with the other source terminal, the first segment of the two loops extending through the area and the second segments of the two loops extending through the area one on either side of said first segment.
Claim 2
Dependent Claim
101 words
In a system for inductive coupling of AC power from a source having two terminals to each of a plurality of receiver units, a transmission circuit, comprising: two conductor loops connected with said source and extending through an area containing said receiver units, a first segment of the two loops being connected with one source terminal and a second segment of each loop being connected with the other source terminal, the first segment of the two loops extending through the area and the second segments of the two loops extending through the area one on either side of said first segment.
Claim 3
Dependent Claim
15 words
The transmission circuit of claim 1 in which said conductor loop segments are substantially coplanar.
Claim 4
Dependent Claim
25 words
The transmission circuit of claim 2 in which each of said second conductor loop segments is spaced from the two adjacent first conductor loop segment.
Claim 5
Dependent Claim
19 words
The transmission circuit of claim 1 in which each of said conductor loop segments is generally rectangular in cross-section.
Claim 6
Dependent Claim
26 words
The transmission circuit of claim 2 for operation at a frequency of the order of 28 KHz, in which said conductor loops are of litz wire.
Claim 7
Dependent Claim
36 words
The transmission circuit of claim 3 with an insulating housing for said conductor loops, the housing having means which engage each of the segments of the conductor loops to maintain the segments in said spaced relationship.
Claim 8
Dependent Claim
49 words
The transmission circuit of claim 6 in which said housing has three parallel, longitudinally extending, spaced apart coplanar conductor pockets with the first segment of the two conductor loops in the center pocket and one of the second segments of the conductor loops in each of the outer pockets.
Claim 9
Dependent Claim
29 words
The transmission circuit of claim 7 in which said housing includes a base with three longitudinally extending ribs which extend into the pockets, positioning the conductor loop segments therein.
Claim 10
Dependent Claim
63 words
An inductive power coupling system comprising the transmission circuit of claim 1 in combination with a secondary pickup assembly for a receiver unit, including: a U-shaped core having two legs; and a secondary circuit coil on said core, the legs of said U-shaped core embracing the first segment of the two conductor loops to couple a signal between the transmission and secondary circuits.
Claim 11
Dependent Claim
61 words
An inductive power coupling system comprising the transmission circuit of claim 3 with a secondary pickup assembly for a receiver unit including: a U-shaped core having two legs; and a secondary circuit coil on said core, the legs of said U-shaped core embracing the first segment of the two conductor loops and being between said first segment and said second segments.
Claim 12
Dependent Claim
74 words
An inductive power coupling system comprising the transmission circuit of claim 7 in which said housing has two channels, one between the center pocket and each of the other pockets, and a secondary pickup assembly unit for a receiver, including: a U-shaped core having two legs; and a secondary circuit coil on said core, the legs of said U-shaped core extending into said channels and embracing the first segment of said two conductor loops.
Claim 13
Dependent Claim
46 words
The inductive power coupling system of claim 9 in which the legs of the pickup core have ends which extend beyond the conductor loop segments and including a core element adjacent the first conductor loop segment and between the ends of the secondary pickup core legs.
Claim 14
Dependent Claim
47 words
The inductive power coupling system of claim 11 in which the legs of the pickup core are longer than the crosssectional dimension of the conductor loop segments and including a core element adjacent the first conductor loop segment and between the legs of the secondary pickup core.
Claim 15
Dependent Claim
51 words
In an inductive power coupling system having a primary circuit conductor, a secondary pickup assembly, comprising: a U-shaped core having two legs; and a secondary circuit coil on said core, the legs of said U-shaped core embracing said primary circuit conductor to couple a signal between the primary and secondary circuits.
Claim 16
Dependent Claim
51 words
In an inductive power coupling system having a primary circuit conductor, a secondary pickup assembly, comprising: a U-shaped core having two legs; and a secondary circuit coil on said core, the legs of said U-shaped core embracing said primary circuit conductor to couple a signal between the primary and secondary circuits.
Claim 17
Dependent Claim
28 words
The secondary pickup assembly of claim 14 in which said U-shaped core has a center section between said two legs and said coil extends about said center section.
Claim 18
Dependent Claim
22 words
The secondary pickup assembly of claim 14 having an insulating cover on said core with said secondary circuit coil outside said cover.
Claim 19
Dependent Claim
31 words
The transmission circuit of claim 1 in which each of the two conductor loops has a separate first segment and the two first segments extend through the area adjacent each other.
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |