US4629963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cell battery re-activator
Assignee: RE-GEN PRODUCTS Ltd A BRITISH Co
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Filing: 1984-10-31
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Granted: 1986-12-16
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Expires: 2004-10-31
Abstract
Abstract A dry cell battery re-activator comprising means for producing uni-directional pulses and inductive coupling means whereby the pulses are applied to a closed circuit comprising an inductive element and a battery to be re-activated. The battery to be re-activated has characteristics similar to a leaky capacitor and therefore it forms with the inductive element a heavily damped resonant circuit. Thus each time a pulse is induced in the inductive element damped oscillations occur in the resonant circuit including the battery.
Inventors
- 👤 Neil Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:14
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/02; H02J2207/00; H02J2207/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
53 words
A dry cell battery reactivator comprising first and second inductively-coupled circuits, said first circuit including a free running oscillator having a frequency of operation which is determined by said second circuit, said second circuit comprising a tank circuit including inductance means and effective capacitance comprised of at least one cell to be reactivated.
Claim 2
Dependent Claim
53 words
A dry cell battery reactivator comprising first and second inductively-coupled circuits, said first circuit including a free running oscillator having a frequency of operation which is determined by said second circuit, said second circuit comprising a tank circuit including inductance means and effective capacitance comprised of at least one cell to be reactivated.
Claim 3
Dependent Claim
18 words
The dry cell battery reactivator of claim 1, said free running oscillator comprising a solid state blocking oscillator.
Claim 4
Dependent Claim
31 words
The dry cell battery reactivator of claim 2, said blocking oscillator connected to a direct current source via a winding which is inductively coupled to said first and said second circuits.
Claim 5
Dependent Claim
36 words
The dry cell battery reactivator of claim 1, said inductance means and said at least one cell serially connected in a loop, said loop including a serially connected diode in parallel with a serially connected resistor.
Claim 6
Dependent Claim
18 words
The dry cell battery reactivator of claim 4, said loop further including a serially connected current limiting means.
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) | 1989-12-15 | 1990-06-16 | 1990-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-15 | 1994-06-16 | 1994-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-15 | 1998-06-16 | 1998-12-16 | $7700.00 | Window Closed / Lapsed |