US4070528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery having porous inherently sealable separator
Assignee: ESB Inc
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Filing: 1975-04-30
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Granted: 1978-01-24
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Expires: 1995-04-30
Abstract
Abstract An improved battery having an electrolyte permeable porous inherently sealable separator and intercell connector both extending beyond the periphery of the cell electrodes. A polymeric film material separator seals the intercell connector. The separators may extend beyond the intercell connectors and are sealed to adjacent separators.
Inventors
- 👤 Bernard C. Bergum
- 👤 Walter Lee Fong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:13
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/42; H01M6/46; H01M6/48
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
115 words
An improved battery comprising in combination a. at least one cell, each cell comprising the combination of 1. a positive electrode, 2. a negative electrode, and 3. an electrolyte permeable separator between the electrodes, the separator extending beyond the periphery of the electrodes; and b. an intercell connector between each adjacent pair of cells, the connector extending outwardly beyond the periphery of the cell electrodes; wherein the improvement comprises having each electrolyte permeable separator consisting essentially of nonconductive, porous, inherently sealable polymeric film material and sealing the separator around its perimeter to the intercell connector, without applying an adhesive material to the surface of the separator periphery, to form a liquid and electrolyte impervious seal.
Claim 2
Dependent Claim
115 words
An improved battery comprising in combination a. at least one cell, each cell comprising the combination of 1. a positive electrode, 2. a negative electrode, and 3. an electrolyte permeable separator between the electrodes, the separator extending beyond the periphery of the electrodes; and b. an intercell connector between each adjacent pair of cells, the connector extending outwardly beyond the periphery of the cell electrodes; wherein the improvement comprises having each electrolyte permeable separator consisting essentially of nonconductive, porous, inherently sealable polymeric film material and sealing the separator around its perimeter to the intercell connector, without applying an adhesive material to the surface of the separator periphery, to form a liquid and electrolyte impervious seal.
Claim 3
Dependent Claim
14 words
An improved battery according to claim 1 wherein the polymeric film material is homogeneous.
Claim 4
Dependent Claim
16 words
An improved battery according to claim 1 wherein the polymeric film material is a composite structure.
Claim 5
Dependent Claim
27 words
Am improved multicell battery according to claim 1 wherein the separators extend outwardly beyond the peripheral separator-intercell connector seals and are there sealed to the adjacent separators.
Claim 6
Dependent Claim
15 words
An improved multicell battery according to claim 4 wherein the polymeric film material is homogeneous.
Claim 7
Dependent Claim
17 words
An improved multicell battery according to claim 4 wherein the polymeric film material is a composite structure.
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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |