US4741339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transfer for implanted prostheses
Assignee: University of Melbourne
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Filing: 1985-10-21
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Granted: 1988-05-03
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Expires: 2005-10-21
Abstract
Abstract Apparatus is provided for improving the coupling between an external inductive transmitting coil and an internal inductive receiving coil to transmit power and/or data to the receiving coil from the transmitting coil. The structure includes a coupling coil inductively coupled to the transmitting coil to increase the Q factor and hence the energy transfer between the transmitting coil and the receiving coil.
Inventors
- 👤 James M. Harrison
- 👤 Peter M. Seligman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:47
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/372; A61N1/378; A61N1/3787; A61F; A61F2250/00; A61F2250/0001; Y; Y10; Y10S; Y10S128/00; Y10S128/903
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
52 words
Apparatus for improving the coupling of an external inductive transmitting coil to an internal inductive receiving coil to transmit power and/or data to said receiving coil from said transmitting coil comprising: a coupling coil inductively coupled to said transmitting coil to increase the coupling between said transmitting coil and said receiving coil.
Claim 2
Dependent Claim
52 words
Apparatus for improving the coupling of an external inductive transmitting coil to an internal inductive receiving coil to transmit power and/or data to said receiving coil from said transmitting coil comprising: a coupling coil inductively coupled to said transmitting coil to increase the coupling between said transmitting coil and said receiving coil.
Claim 3
Dependent Claim
17 words
Apparatus in accordance with claim 1 in which said coupling coil is coplanar with said transmitting coil.
Claim 4
Dependent Claim
17 words
Apparatus in accordance with claim 1 in which said coupling coil is concentric with said transmitting coil.
Claim 5
Dependent Claim
17 words
Apparatus in accordance with claim 3 in which said coupling coil is disposed outside said transmitting coil.
Claim 6
Dependent Claim
17 words
Apparatus in accordance with claim 3 in which said coupling coil is disposed inside said transmitting coil.
Claim 7
Dependent Claim
25 words
Apparatus in accordance with claim 1 including capacitance means connected to each of said transmitting coil and said coupling coil to form LC circuits therewith.
References Cited (Backward Citations)
US2656839A
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US3195548A
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US4014346A
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US4071032A
Cited
US4441210A
Cited
US4562840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |