US3923545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid structure for high rate lead/acid battery
Assignee: Environmental Protection Agency
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Filing: 1973-03-30
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Granted: 1975-12-02
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Expires: 1993-03-30
Abstract
Abstract An improved electrode grid structure is formed wherein at least two equispaced current-carrying separators are tapered in width and intersect at the widest portion perpendicular to a tapered side element having a current collecting tab. In addition, the number of current-carrying separators parallel to the tapered current-carrying separators is greater than the number of current-carrying separators perpendicular to the tapered currentcarrying separators. The purpose of the structure is to maximize mechanical support while minimizing the resistive paths in regions of highest current density.
Inventors
- 👤 Robert S Margulies
- 👤 Royce E Biddick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:03
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/72; H01M4/73; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
A RECTANGULAR BATTERY GRID STRUCTURE COMPRISING: A. AT LEAST ONE CURRENT-COLLECTOR TAB ON ONE EDGE OF THE GRID STRUCURE; B. A PLURALITY OF PARALLEL CURRENT-CARRYING ELEMENTS, WHEREIN SAID ELEMENT ON ONE EDGE OF SAAID GRID STRUCTURE IS TAPERED WIDEST AT THE MIDDLE OF SAID ELEMENT AND SAID TAB IS POSITIONED AT SAID THICKEST WIDTH; C. A PLURALITY OF PARALLEL CURRENT-CARRYING ELEMENTS JOINED AT RIGHT ANGLE TO SAID ELEMENTS IN (B) WHEREIN AT LEAST TWO OF WHICH ARE EQUISPACED AND ARE TAPERED FROM ONE SIDE OF THE GRID STRUCTURE TO THE OPPOSITE SIDE OF THE GRID STRUCTURE WITH THE BROADEST WIDTH JOINING SAID TAB-CARRYING SIDE ELEMENT IN THE WIDEST SECTION WHEREIN THE NUMBER AND SIZE OF SAID CURRENT-CARRYING ELEMENTS ARE GOVERNED BY A MATHEMATICAL EQUATION:
Claim 2
Dependent Claim
124 words
A RECTANGULAR BATTERY GRID STRUCTURE COMPRISING: A. AT LEAST ONE CURRENT-COLLECTOR TAB ON ONE EDGE OF THE GRID STRUCURE; B. A PLURALITY OF PARALLEL CURRENT-CARRYING ELEMENTS, WHEREIN SAID ELEMENT ON ONE EDGE OF SAAID GRID STRUCTURE IS TAPERED WIDEST AT THE MIDDLE OF SAID ELEMENT AND SAID TAB IS POSITIONED AT SAID THICKEST WIDTH; C. A PLURALITY OF PARALLEL CURRENT-CARRYING ELEMENTS JOINED AT RIGHT ANGLE TO SAID ELEMENTS IN (B) WHEREIN AT LEAST TWO OF WHICH ARE EQUISPACED AND ARE TAPERED FROM ONE SIDE OF THE GRID STRUCTURE TO THE OPPOSITE SIDE OF THE GRID STRUCTURE WITH THE BROADEST WIDTH JOINING SAID TAB-CARRYING SIDE ELEMENT IN THE WIDEST SECTION WHEREIN THE NUMBER AND SIZE OF SAID CURRENT-CARRYING ELEMENTS ARE GOVERNED BY A MATHEMATICAL EQUATION:
Claim 3
Dependent Claim
27 words
A rectangular battery grid structure according to claim 1 wherein the number of current-carrying elements in (B) is less than the number of current-carrying elements in (C).
Claim 4
Dependent Claim
20 words
A rectangular battery grid structure according to claim 1 wherein the bottom current-carrying element has at least one support foot.
Claim 5
Dependent Claim
144 words
RECTANGULAR PASTED PLATE FOR A STORAGE BATTERY COMPRISING: A. A PLURALITY OF RECTANGULAR PELLETS HELD IN A GRID PATTERN FORMED BY B. A PLURALITY OF PARALLEL CURRENT-CARRYING ELEMENTS, WHEREIN SAID ELLEMENT ON ONE SIDE OF SAID GRID PATTERN IS TAPERED WIDEST AT THE MIDDLE OF SAID ELEMENT; C. A PLURALITY OF PARALEL CURRENT-CARRYING ELEMENTS JOINED AT RIGHT ANGLE WITH SAID ELEMENTS IN (B) WHEREIN AT LEAST TWO OF THE ELEMENTS ARE EQUISPACED ACROSS THE GRID PATTERN AND ARE TAPERED FROM ONE SIDE OF THE GRID STRUCTURE TO THE OPPOSITE SIDE OF THEGRID STRUCTURE WITH THE BROADEST WIDTH JOINING SAID TAPERED ELEMENT IN (B) AT THE WIDEST SECTION; AND D. A CURRENT-COLLECTOR TAB ON SAID TAPERED ELEMENT OF (B) AT THE INTERSECTON OF ONE OF SAID TAPERED ELEMENTS OF (C) WHEREIN THE NUMBER AND SIZE OF SAID CURRENT-CARRYING ELEMENTS ARE GOVERNED BY A MATHEMATICAL EQUATION:
Claim 6
Dependent Claim
144 words
RECTANGULAR PASTED PLATE FOR A STORAGE BATTERY COMPRISING: A. A PLURALITY OF RECTANGULAR PELLETS HELD IN A GRID PATTERN FORMED BY B. A PLURALITY OF PARALLEL CURRENT-CARRYING ELEMENTS, WHEREIN SAID ELLEMENT ON ONE SIDE OF SAID GRID PATTERN IS TAPERED WIDEST AT THE MIDDLE OF SAID ELEMENT; C. A PLURALITY OF PARALEL CURRENT-CARRYING ELEMENTS JOINED AT RIGHT ANGLE WITH SAID ELEMENTS IN (B) WHEREIN AT LEAST TWO OF THE ELEMENTS ARE EQUISPACED ACROSS THE GRID PATTERN AND ARE TAPERED FROM ONE SIDE OF THE GRID STRUCTURE TO THE OPPOSITE SIDE OF THEGRID STRUCTURE WITH THE BROADEST WIDTH JOINING SAID TAPERED ELEMENT IN (B) AT THE WIDEST SECTION; AND D. A CURRENT-COLLECTOR TAB ON SAID TAPERED ELEMENT OF (B) AT THE INTERSECTON OF ONE OF SAID TAPERED ELEMENTS OF (C) WHEREIN THE NUMBER AND SIZE OF SAID CURRENT-CARRYING ELEMENTS ARE GOVERNED BY A MATHEMATICAL EQUATION:
Claim 7
Dependent Claim
25 words
A pasted plate according to claim 4 wherein the number of current-carrying elements in (B) is less than the number of current-carrying elements in (C).
Claim 8
Dependent Claim
18 words
A pasted plate according to claim 4 wherein the bottom current-carrying element has at least one support foot.
References Cited (Backward Citations)
CA577719A
Cited
US1370013A
Cited
US1376929A
Cited
US1508776A
Cited
GB436266A
Cited
US2064324A
Cited
US2690464A
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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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |