Patent US5619078A successfully refreshed from Google Patents.
US5619078A
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US
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Primary inductive pathway
Assignee: Daifuku Co Ltd
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Filing: 1993-05-05
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Granted: 1997-04-08
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Expires: 2013-05-05
Abstract
Abstract A primary inductive track or path 450 for a resonant inductive power distribution system is made up from a number of modules 453, each supplied as a pre-built and substantially pre-tuned segment of the track. These modules have more than one capacitor 456, 457 and more than one inductance 458, 459 (generally, the inductance is the intrinsic inductance of the length of track) and each capacitor and adjacent inductor is capable of resonating at its own native frequency. A zero-inductance cable 452, carrying a small fraction of the circulating resonant current (comprising a mis-match or an error current), directly connects the capacitors at poles having equal polarity and tends to constrain the system limiting possible frequencies of resonance.
Inventors
- 👤 John T. Boys
- 👤 Shuzo Nishino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:59
CPC Classifications
H; H04; H04B; H04B5/00; H04B5/20; H04B5/24; H04B5/26; H04B5/266; G; G06; G06K; G06K7/00; G06K7/0008; G06K7/10; G06K7/10009; G06K7/10316; G06K7/10336; H02; H02J; H02J50/00; H02J50/10; H02J50/12; H02J50/40; H02J50/70; H02J50/90; H04B5/22; H04B5/70; H04B5/79
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
159 words
A primary inductive pathway for a resonant inductive power distribution system operating at a system resonant frequency, said pathway being connected to a power supply and having two spaced conductors terminated by a bridging element and forming with said power supply a closed loop, wherein said primary inductive pathway comprises at least two primary conductor modules, each primary conductor module having a resonant frequency compatible with the system resonant frequency, each said primary conductor module comprising a first conductor and a second conductor spaced apart from one another, each conductor having a first connector and a second connector, each module having at least one capacitor; each module being capable of connection to adjoining conductors within adjacent modules or to a bridging element at one end of the pathway, so that a number of modules can be joined together to form a longer pathway, through the length of which an effective amount of inductive power can, during use, be propagated.
Claim 2
Dependent Claim
159 words
A primary inductive pathway for a resonant inductive power distribution system operating at a system resonant frequency, said pathway being connected to a power supply and having two spaced conductors terminated by a bridging element and forming with said power supply a closed loop, wherein said primary inductive pathway comprises at least two primary conductor modules, each primary conductor module having a resonant frequency compatible with the system resonant frequency, each said primary conductor module comprising a first conductor and a second conductor spaced apart from one another, each conductor having a first connector and a second connector, each module having at least one capacitor; each module being capable of connection to adjoining conductors within adjacent modules or to a bridging element at one end of the pathway, so that a number of modules can be joined together to form a longer pathway, through the length of which an effective amount of inductive power can, during use, be propagated.
Claim 3
Dependent Claim
32 words
A primary inductive pathway for a resonant inductive power distribution system as claimed in claim 1, wherein said at least one capacitor is connected in series with each conductor of said modules.
Claim 4
Dependent Claim
58 words
A primary conductive pathway for a resonant inductive power distribution system as claimed in claim 1, wherein a first of said modules has one capacitor in series with the first conductor of the first module, and an adjacent complementary module connected to the first module has one capacitor in series with the second conductor of a second module.
Claim 5
Dependent Claim
28 words
A primary inductive pathway for a resonant inductive power distribution system as claimed in claim 2, wherein repeating pairs of said first and second modules are connected together.
Claim 6
Dependent Claim
51 words
A primary inductive pathway for a resonant inductive power distribution system as claimed in claim 1, wherein said pathway has at least two bypass joining points which, in use, have equal or similar phase and magnitude so that the tied-together points are held more closely to the same phase and magnitude.
Claim 7
Dependent Claim
24 words
A primary inductive pathway for a resonant inductive power distribution system as claimed in claim 5, wherein the bypass comprises a zero inductance cable.
Claim 8
Dependent Claim
80 words
A primary inductive pathway for a resonant inductive power distribution system as claimed in claim 5, wherein each module includes a capacitor across its first connectors and a zero inductance cable joining the first connector of the first conductor of a first module to the first connector of the second conductor of an adjacent module; and joining the first connector of the second conductor of said first module to the first connector of the first conductor of said adjacent module.
Claim 9
Dependent Claim
51 words
A primary inductive pathway for a resonant inductive power distribution system as claimed in claim 1, further comprising loop energizing means comprising controllable switching means connected between two electrical connections at an origin of the loop, for providing a bypass route for high-frequency resonant current applied to the two electrical connections.
Claim 10
Dependent Claim
81 words
A primary inductive pathway for a resonant inductive power distribution system as claimed in claim 1, wherein said first conductor and said second conductor of each of said at least two primary conductor modules are mounted, in a parallel, spaced-apart configuration and thereby form an open-ended, elongated loop having an electrical connection at each end of each conductor, so that a chain of adjoining modules may be joined together in series and energized as a whole by a resonant power supply.
Claim 11
Dependent Claim
51 words
A primary conductive pathway as claimed in claim 1, wherein each of said at least two primary conductor modules includes a branch line, each branch line being connected to a main trunk line, said pathway further comprising means for shorting and bypassing a selected branch line to de-energize a corresponding module.
Claim 12
Dependent Claim
42 words
A primary inductive pathway as claimed in claim 10, wherein each of said at least two primary conductor modules comprises associated warning means powered directly or indirectly from current flowing within each module in order to indicate when each module is energized.
Claim 13
Dependent Claim
30 words
A primary inductive pathway as claimed in claim 1, comprising ferro-magnetic elements close to said pathway, wherein said ferro-magnetic elements are shielded from the magnetic fields by a conductive sheath.
Claim 14
Dependent Claim
158 words
A primary inductive pathway for a resonant inductive power distribution system operating at a system resonant frequency, said pathway being adapted to be connected to a power supply and having a first conductor and a second conductor spaced apart from one another, wherein a first and second end of each conductor are brought close together, said pathway further including a capacitor, and a linkage; each conductor having a first end and a second end, a connector at a first end being connected to a power supply, the capacitor being connected across the second ends of the first and second conductor, the linkage comprising a connection between the first end of the first conductor and the second end of the second conductor, and a connection between the first end of the second conductor and the second end of the first conductor, whereby, in use, an effective amount of inductive power can be propagated along the length of the pathway.
Claim 15
Dependent Claim
158 words
A primary inductive pathway for a resonant inductive power distribution system operating at a system resonant frequency, said pathway being adapted to be connected to a power supply and having a first conductor and a second conductor spaced apart from one another, wherein a first and second end of each conductor are brought close together, said pathway further including a capacitor, and a linkage; each conductor having a first end and a second end, a connector at a first end being connected to a power supply, the capacitor being connected across the second ends of the first and second conductor, the linkage comprising a connection between the first end of the first conductor and the second end of the second conductor, and a connection between the first end of the second conductor and the second end of the first conductor, whereby, in use, an effective amount of inductive power can be propagated along the length of the pathway.
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) | 2000-04-07 | 2000-10-07 | 2001-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-07 | 2004-10-07 | 2005-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-07 | 2008-10-07 | 2009-04-08 | $7700.00 | Window Closed / Lapsed |