US3713896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for electrochemical cells
Assignee: ESB Inc
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Filing: 1970-08-19
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Granted: 1973-01-30
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Expires: 1990-08-19
Abstract
Abstract An insulating seal between metallic battery parts based upon the use of an epoxy-polyamide resin is described. In a first embodiment of the invention, a coating of cured resin on one of the metallic parts forms the seal. In a second embodiment, the seal comprises a coating of epoxy-polyamide resin and a grommet of a selected polymer compressed between the two metal parts. In a third embodiment, a nylon grommet is injection molded over a metallic member having a coating of epoxy-polyamide. In a fourth embodiment, a metallic member having a nickel surface is treated with carbon. The carbonized surface is coated with epoxypolyamide and a seal is then made according to any of the first three embodiments. In a final series of embodiments, the coatings and other treatments described are applied to both metallic surfaces.
Inventors
- 👤 R Feldhake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:39
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/183; H01M50/186; H01M50/19; H01M50/193; H01M50/197; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
114 words
An electrochemical cell comprising: a. a positive electrode, a negative electrode, a separator therebetween and an aqueous electrolyte; b. a metallic container member partially enclosing the electrodes and electrically connected to a first electrode; c. a metallic closure member completing the enclosing of the electrodes and electrically connected to a second electrode of opposite polarity from said first electrode; and d. a layer of cured epoxy-polyamide resin located and compressed between the metallic container member and the metallic closure member in wetting contact with one of the metallic members and in non-wetting contact with the other metallic member, whereby a fluid-tight electrically insulating seal between the metallic container and the metallic closure is effected.
Claim 2
Dependent Claim
114 words
An electrochemical cell comprising: a. a positive electrode, a negative electrode, a separator therebetween and an aqueous electrolyte; b. a metallic container member partially enclosing the electrodes and electrically connected to a first electrode; c. a metallic closure member completing the enclosing of the electrodes and electrically connected to a second electrode of opposite polarity from said first electrode; and d. a layer of cured epoxy-polyamide resin located and compressed between the metallic container member and the metallic closure member in wetting contact with one of the metallic members and in non-wetting contact with the other metallic member, whereby a fluid-tight electrically insulating seal between the metallic container and the metallic closure is effected.
Claim 3
Dependent Claim
25 words
A cell as described in claim 1 in which the metallic member in wetting contact with the resin is electrically connected to the negative electrode.
Claim 4
Dependent Claim
111 words
An electrochemical cell comprising: a. a positive electrode, a negative electrode, a separator therebetween and an aqueous electrolyte; b. a first metallic container member electrically connected to a first electrode and a second metallic closure member electrically connected to a second electrode of opposite polarity from said first electrode; c. a coating of cured epoxy-polyamide resin upon and in wetting contact with the first metallic member; and d. a plastic member resistant to cold flow located and compressed between the coating of resin on the first metallic member and the second metallic member whereby a fluid-tight electrically insulating seal between the first metallic member and the second metallic member is effected.
Claim 5
Dependent Claim
111 words
An electrochemical cell comprising: a. a positive electrode, a negative electrode, a separator therebetween and an aqueous electrolyte; b. a first metallic container member electrically connected to a first electrode and a second metallic closure member electrically connected to a second electrode of opposite polarity from said first electrode; c. a coating of cured epoxy-polyamide resin upon and in wetting contact with the first metallic member; and d. a plastic member resistant to cold flow located and compressed between the coating of resin on the first metallic member and the second metallic member whereby a fluid-tight electrically insulating seal between the first metallic member and the second metallic member is effected.
Claim 6
Dependent Claim
31 words
A cell as described in claim 3 in which the plastic member resistant to cold flow is chosen from the group which consists of nylon, polypropylene, high density polyethylene and polyfluoroethylene.
Claim 7
Dependent Claim
19 words
A cell as described in claim 3 in which the first metallic member is connected to the negative electrode.
Claim 8
Dependent Claim
29 words
A cell as described in claim 5 in which the first metallic member has a coating of carbon overlying a nickel surface and underlying and wetted by the resin.
Claim 9
Dependent Claim
117 words
An electrochemical cell comprising: a. a positive electrode, a negative electrode, a separator therebetween and an aqueous electrolyte; b. a first metallic container member electrically connected to a first electrode and a second metallic closure member electrically connected to a second electrode of opposite polarity from said first electrode; c. a coating of cured epoxy-polyamide resin upon and in wetting contact with the first metallic member; and d. a nylon plastic member located and compressed between the coating of resin on the first metallic member and the second metallic member and in wetting contact with the coating of resin whereby a fluid-tight electrically insulating seal between the first metallic member and the second metallic member is effected.
Claim 10
Dependent Claim
117 words
An electrochemical cell comprising: a. a positive electrode, a negative electrode, a separator therebetween and an aqueous electrolyte; b. a first metallic container member electrically connected to a first electrode and a second metallic closure member electrically connected to a second electrode of opposite polarity from said first electrode; c. a coating of cured epoxy-polyamide resin upon and in wetting contact with the first metallic member; and d. a nylon plastic member located and compressed between the coating of resin on the first metallic member and the second metallic member and in wetting contact with the coating of resin whereby a fluid-tight electrically insulating seal between the first metallic member and the second metallic member is effected.
Claim 11
Dependent Claim
19 words
A cell as defined in claim 7 in which the first metallic member is connected to the negative electrode.
Claim 12
Dependent Claim
33 words
A cell as defined in claim 8 in which the metallic member connected to the negative electrode has a coating of carbon overlying a nickel surface and underlying and wetted by the resin.
Claim 13
Dependent Claim
125 words
An electrochemical cell comprising: a. a positive electrode, a negative electrode, a separator therebetween and an aqueous electrolyte; b. a first metallic container member electrically connected to a first electrode and a second metallic closure member electrically connected to a second electrode of opposite polarity from said first electrode; c. a coating of cured epoxy-polyamide resin upon and in wetting contact with the first metallic member; d. a coating of cured epoxy-polyamide resin upon and in wetting contact with the second metallic member; and e. the resin coating on the first metallic part and the resin coating on the second metallic part being in compressive contact with each other whereby a fluid-tight electrically insulating seal between the metallic container and the metallic closure is effected.
Claim 14
Dependent Claim
125 words
An electrochemical cell comprising: a. a positive electrode, a negative electrode, a separator therebetween and an aqueous electrolyte; b. a first metallic container member electrically connected to a first electrode and a second metallic closure member electrically connected to a second electrode of opposite polarity from said first electrode; c. a coating of cured epoxy-polyamide resin upon and in wetting contact with the first metallic member; d. a coating of cured epoxy-polyamide resin upon and in wetting contact with the second metallic member; and e. the resin coating on the first metallic part and the resin coating on the second metallic part being in compressive contact with each other whereby a fluid-tight electrically insulating seal between the metallic container and the metallic closure is effected.
Claim 15
Dependent Claim
30 words
A cell as defined in claim 10 in which at least one metallic member has a coating of carbon overlying a nickel surface and underlying and wetted by the resin.
Claim 16
Dependent Claim
129 words
An electrochemical cell comprising: a. a positive electrode, a negative electrode, a separator therebetween and an aqueous electrolyte; b. a first metallic container member electrically connected to a first electrode and a second metallic closure member electrically connected to a second electrode of opposite polarity from said first electrode; c. a coating of cured epoxy-polyamide resin upon and in wetting coNtact with the first metallic member; d. a coating of cured epoxy-polyamide resin upon and in wetting contact with the second metallic member; and e. a plastic member resistant to cold flow located and compressed between the coating on the first metallic member and the coating on the second metallic member whereby a fluid-tight electrically insulating seal between the first metallic member and the second metallic member is effected.
Claim 17
Dependent Claim
129 words
An electrochemical cell comprising: a. a positive electrode, a negative electrode, a separator therebetween and an aqueous electrolyte; b. a first metallic container member electrically connected to a first electrode and a second metallic closure member electrically connected to a second electrode of opposite polarity from said first electrode; c. a coating of cured epoxy-polyamide resin upon and in wetting coNtact with the first metallic member; d. a coating of cured epoxy-polyamide resin upon and in wetting contact with the second metallic member; and e. a plastic member resistant to cold flow located and compressed between the coating on the first metallic member and the coating on the second metallic member whereby a fluid-tight electrically insulating seal between the first metallic member and the second metallic member is effected.
Claim 18
Dependent Claim
27 words
A cell as defined in claim 12 in which the plastic member is chosen from the group which consists of nylon, polypropylene, high density polyethylene and polyfluoroethylene.
Claim 19
Dependent Claim
30 words
A cell as defined in claim 12 in which at least one metallic member has a coating of carbon overlying a nickel surface and underlying and wetted by the resin.
Claim 20
Dependent Claim
135 words
An electrochemical cell comprising: a. a first electrode, a second electrode, separator means therebetween and an aqueous electrolyte, one of the electrodes being a positive electrode and the other electrode being a negative electrode; b. a metallic container member partially enclosing the electrodes and electrically connected to the first electrode; c. a metallic closure member in electrical contact with the second electrode; d. a layer of cured epoxy-polyamide resin located between the metallic container member and the metallic closure member and completing the enclosure of the electrodes, the separator means and the electrolyte, the resin layer being in wetting contact with one of the metallic members and in non-wetting contact with the other; and e. the metallic member wet by the layer of resin having a coating of carbonized nickel underlying the layer of resin.
Claim 21
Dependent Claim
135 words
An electrochemical cell comprising: a. a first electrode, a second electrode, separator means therebetween and an aqueous electrolyte, one of the electrodes being a positive electrode and the other electrode being a negative electrode; b. a metallic container member partially enclosing the electrodes and electrically connected to the first electrode; c. a metallic closure member in electrical contact with the second electrode; d. a layer of cured epoxy-polyamide resin located between the metallic container member and the metallic closure member and completing the enclosure of the electrodes, the separator means and the electrolyte, the resin layer being in wetting contact with one of the metallic members and in non-wetting contact with the other; and e. the metallic member wet by the layer of resin having a coating of carbonized nickel underlying the layer of resin.
Claim 22
Dependent Claim
34 words
An electrochemical cell as defined in claim 15 in which the metallic member having the coating of carbonized nickel underlying and wet by the layer of resin is electrically connected to the negative electrode.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |