Patent US4374908A successfully refreshed from Google Patents.
US4374908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular electrode
Assignee: Individual
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Filing: 1980-01-30
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Granted: 1983-02-22
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Expires: 2000-01-30
Abstract
Abstract The invention relates to a tubular electrode for an electrochemical accumulator in the shape of an electrode plate with a number of electrolyte-permeable tube casings essentially parallelly arranged adjacent each other, containing an active material and conductors connected to a common collecting bar.
Inventors
- 👤 Alfons S. M. Lindholm
- 👤 Rolf C. G. Magnusson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:11
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/56; H01M4/57; H01M4/64; H01M4/70; H01M4/76; H01M4/765; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A battery electrode structure comprising: a generally planar first electrode; a plurality of elongate, permeable tube casings each having a generally oval cross-sectional shape, arranged parallel to one another at an angle to the first electrode of between about 25° and 50°, and touching one another along longitudinal contact lines, said angle measured from the major axis of the cross-section of said tube casing; a second electrode arranged within each said tube casing; and an active material substantially filling a volume within said tube casings between said second electrodes and an internal surface of said respective tube casings.
Claim 2
Dependent Claim
98 words
A battery electrode structure comprising: a generally planar first electrode; a plurality of elongate, permeable tube casings each having a generally oval cross-sectional shape, arranged parallel to one another at an angle to the first electrode of between about 25° and 50°, and touching one another along longitudinal contact lines, said angle measured from the major axis of the cross-section of said tube casing; a second electrode arranged within each said tube casing; and an active material substantially filling a volume within said tube casings between said second electrodes and an internal surface of said respective tube casings.
Claim 3
Dependent Claim
27 words
The electrode structure of claim 1 wherein said tube casings and said second electrode and active material therewith are sandwiched between a pair of parallel first electrodes.
Claim 4
Dependent Claim
19 words
The electrode structure of claim 1 further comprising permeable separator means between said first electrode and said tube casings.
Claim 5
Dependent Claim
23 words
The electrode structure of claim 1 further comprising spacer rib mounting means for offset mounting of said tube casings from said first electrode.
Claim 6
Dependent Claim
20 words
The electrode structure of claim 1 wherein said second electrode has an elongate cross-sectional shape aligned with said major axis.
Claim 7
Dependent Claim
29 words
The electrode structure of claim 5 wherein the distance between the outside surface of said second electrode and the inside surface of the surrounding tube casing is generally constant.
Claim 8
Dependent Claim
17 words
The electrode structure of claim 1 comprising a plurality of second electrodes arranged along said major axis.
Claim 9
Dependent Claim
21 words
The electrode structure of claim 1 wherein said generally oval cross-sectional shaped tube casing has parallel lateral sides and semi-circular ends.
Claim 10
Dependent Claim
17 words
The electrode structure of claim 1 wherein said tube casing and second electrode have congruent cross-sectional shapes.
Claim 11
Dependent Claim
15 words
The electrode structure of claim 1 wherein said angle is between about 35° and 40°.
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) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |