US4567121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating seal for electrochemical cells
Assignee: Venture Technology Ltd
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Filing: 1985-06-05
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Granted: 1986-01-28
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Expires: 2005-06-05
Abstract
Abstract An electrochemical cell (2) including at least two electrically conductive parts (8,14) which are sealed together by an organic polymer adhesive (16) but electrically insulated from each other by a layer (10) comprising aluminum oxide which is formed on a surface of one of the parts.
Inventors
- 👤 Alexander Gilmour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:30
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/147; H01M50/172; H01M50/174; H01M50/179; H01M50/183; H01M50/19; H01M50/193; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911; Y10T29/49114
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
42 words
An electrochemical cell including at least two electrically conductive parts which are sealed together by an organic polymer adhesive but electrically insulated from each other by a layer comprising aluminium oxide which is formed on a surface of one of the parts.
Claim 2
Dependent Claim
42 words
An electrochemical cell including at least two electrically conductive parts which are sealed together by an organic polymer adhesive but electrically insulated from each other by a layer comprising aluminium oxide which is formed on a surface of one of the parts.
Claim 3
Dependent Claim
39 words
An electrochemical cell according to claim 1, wherein the said one of the parts is composed of aluminium or an aluminium alloy and the aluminium oxide layer is formed by oxidation of the surface of the said one part.
Claim 4
Dependent Claim
18 words
An electrochemical cell according to claim 2, wherein the aluminium oxide layer is formed by an anodising process.
Claim 5
Dependent Claim
20 words
An electrochemical cell according to claim 1, wherein the layer has a thickness of from 0.1 microns to 25 microns.
Claim 6
Dependent Claim
23 words
An electrochemical cell according to claim 1, wherein the said two parts are each connected to a respective electrode of the electrochemical cell.
Claim 7
Dependent Claim
78 words
An electrochemical cell according to claim 1, wherein one of the said two parts is a terminal for the cell and is comprised of a laminar member comprising a layer of a first metal which is suitable as an electrical contact and is superposed on a layer of aluminium, the said aluminium oxide layer being formed on the aluminium layer, and the other of the said two parts constituting a container for the electrochemical components of the cell.
Claim 8
Dependent Claim
17 words
An electrochemical cell according to claim 1, wherein the organic polymer adhesive is a hot melt adhesive.
Claim 9
Independent Claim
63 words
A method of sealing together electrically conductive parts of an electrochemical cell while retaining the said parts electrically insulated from each other, the method comprising the steps of forming a layer comprising aluminium oxide on a surface of one of the parts and adhering the parts together by an organic polymer adhesive so that the layer electrically insulates the parts from each other.
Claim 10
Independent Claim
63 words
A method of sealing together electrically conductive parts of an electrochemical cell while retaining the said parts electrically insulated from each other, the method comprising the steps of forming a layer comprising aluminium oxide on a surface of one of the parts and adhering the parts together by an organic polymer adhesive so that the layer electrically insulates the parts from each other.
Claim 11
Dependent Claim
38 words
A method according to claim 8, wherein the said one of the parts is composed of aluminium or an aluminium alloy and the aluminium oxide layer is formed by oxidation of the surface of the said one part.
Claim 12
Dependent Claim
17 words
A method according to claim 9, wherein the aluminium oxide layer is formed by an anodising process.
Claim 13
Dependent Claim
19 words
A method according to claim 8, wherein the layer has a thickness of from 0.1 microns to 25 microns.
Claim 14
Dependent Claim
22 words
A method according to claim 8, wherein the said two parts are each connected to a respective electrode of the electrochemical cell.
Claim 15
Dependent Claim
77 words
A method according to claim 8, wherein one of the said two parts is a terminal for the cell and is comprised of a laminar member comprising a layer of a first metal which is suitable as an electrical contact and is superposed on a layer of aluminium, the said aluminium oxide layer being formed on the aluminium layer, and the other of the said two parts constituting a container for the electrochemical components of the cell.
Claim 16
Dependent Claim
16 words
A method according to claim 8, wherein the organic polymer adhesive is a hot melt adhesive.
References Cited (Backward Citations)
US4419418A
Cited
US4508797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |