Patent US3981744A successfully refreshed from Google Patents.
US3981744A
Expired / Lapsed
US
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Enclosure for lithium-iodine cell and method of making the same
Assignee: Greatbatch Ltd
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Filing: 1974-10-08
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Granted: 1976-09-21
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Expires: 1994-10-08
Abstract
Abstract An enclosure for a lithium-iodine cell including a first casing containing the cell components and a second casing containing the first casing. The first casing is disposed so that the lid thereof is adjacent the bottom of the second casing. Both casings are of a material which is non-reactive with iodine such as epoxy material. The first casing is encapsulated in a polyester material for electrical insulation and sealing against iodine migration. The second casing is placed in an hermetically sealed outer casing of metal, the second casing being spaced from the lid of the outer casing.
Inventors
- 👤 Wilson Greatbatch
- 👤 Ralph T. Mead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:53
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/182; H01M50/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911; Y10T29/49114
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
253 words
A lithium-iodine cell enclosure comprising: a. a first hollow casing of a material which is non-reactive with iodine and having an opening at one end, said casing containing a lithium-iodine cell comprising a lithium anode, iodine-containing cathode material and a lithium iodide electrolyte; b. closure means of a material which is non-reactive with iodine for sealing the opening in said first casing; c. a second hollow casing enclosing said first casing, said second casing having an opening at one end which is closed by a closure means sealed thereto, said second casing being inverted relative to said first casing whereby said closure means of said first casing is adjacent an end of said second casing opposite said closure means of said second casing so that any iodine-containing material which may happen to leak past said closure means of said first casing must flow along the entire dimension of said first casing before reaching said closure means of said second casing thereby minimizing the probability of any damaging effects from such leakage; d. said first and second casings being generally of the same shape and in relatively close-fitting relation; e. a third hollow casing enclosing said first and second casings, said third casing having an opening at one end and which is closed by a lid member hermetically sealed to said third casing; and f. spacing means between said second casing and said lid member of said third casing for providing a space to receive any substances released from said first or second casings.
Claim 2
Dependent Claim
253 words
A lithium-iodine cell enclosure comprising: a. a first hollow casing of a material which is non-reactive with iodine and having an opening at one end, said casing containing a lithium-iodine cell comprising a lithium anode, iodine-containing cathode material and a lithium iodide electrolyte; b. closure means of a material which is non-reactive with iodine for sealing the opening in said first casing; c. a second hollow casing enclosing said first casing, said second casing having an opening at one end which is closed by a closure means sealed thereto, said second casing being inverted relative to said first casing whereby said closure means of said first casing is adjacent an end of said second casing opposite said closure means of said second casing so that any iodine-containing material which may happen to leak past said closure means of said first casing must flow along the entire dimension of said first casing before reaching said closure means of said second casing thereby minimizing the probability of any damaging effects from such leakage; d. said first and second casings being generally of the same shape and in relatively close-fitting relation; e. a third hollow casing enclosing said first and second casings, said third casing having an opening at one end and which is closed by a lid member hermetically sealed to said third casing; and f. spacing means between said second casing and said lid member of said third casing for providing a space to receive any substances released from said first or second casings.
Claim 3
Dependent Claim
17 words
Apparatus according to claim 1, wherein said first casing and said closure means are of epoxy material.
Claim 4
Dependent Claim
20 words
Apparatus according to claim 1, wherein said first casing and said closure means are of polyester material reinforced with fiberglass.
Claim 5
Dependent Claim
79 words
Apparatus according to claim 1, wherein the anode, cathode and electrolyte of said cell occupy the interior of said first casing to a level adjacent said opening and wherein said closure means of said first casing comprises: a. a layer of epoxy material overlaying the contents of said casing and disposed adjacent said opening; and b. a lid member fitted to said opening and contacting said epoxy material whereby said epoxy material seals said lid member to said casing.
Claim 6
Dependent Claim
18 words
Apparatus according to claim 1, further including polyester material in said second casing and encapsulating said first casing.
Claim 7
Dependent Claim
12 words
Apparatus according to claim 1, wherein said third casing is of metal.
Claim 8
Dependent Claim
53 words
Apparatus according to claim 1, wherein said lid member is provided with electrical terminal means and wherein said apparatus further comprises a member of thermal insulating material between said lid member and said second casing and a member of electrical insulating material between said member of thermal insulating material and said second casing.
Claim 9
Dependent Claim
13 words
Apparatus according to claim 4, wherein said lid member is of epoxy material.
Claim 10
Dependent Claim
27 words
Apparatus according to claim 4, further including a strip of fiberglass cloth material positioned between the contents of said first casing and said layer of epoxy material.
Claim 11
Dependent Claim
13 words
Apparatus according to claim 5, wherein said second casing is of epoxy material.
Claim 12
Dependent Claim
16 words
Apparatus according to claim 5, wherein said second casing is of polyester material reinforced with fiberglass.
Claim 13
Independent Claim
244 words
A method of enclosing a lithium-iodine cell comprising the steps of: a. providing a first hollow casing of a material which is non-reactive with iodine and having an opening at one end; b. placing a lithium anode and a cathode current collector in said first casing in spaced relation to each other; c. introducing iodine-containing material into said first casing and in operative contact with said lithium anode and said cathode current collector; d. sealing the opening in said first casing; e. placing said first casing in a second hollow casing having an opening at one end in a manner such that said second casing is inverted relative to said first casing with the sealed end of said first casing adjacent an end of said second casing opposite the opening in said second casing; f. introducing potting material into said second casing in a manner encapsulating said first casing, said potting material being non-reactive with iodine; g. sealing the opening in said second casing; g. whereby any iodine-containing material which may happen to leak through the sealed end of said first casing must flow along the entire dimension of said first casing before reaching the sealed end of said second casing thereby minimizing the probability of any damaging effects from such leakage; i. placing said first and second casings in a third hollow casing having an opening at one end; and j. hermetically sealing a lid member to the opening in said third casing.
Claim 14
Independent Claim
244 words
A method of enclosing a lithium-iodine cell comprising the steps of: a. providing a first hollow casing of a material which is non-reactive with iodine and having an opening at one end; b. placing a lithium anode and a cathode current collector in said first casing in spaced relation to each other; c. introducing iodine-containing material into said first casing and in operative contact with said lithium anode and said cathode current collector; d. sealing the opening in said first casing; e. placing said first casing in a second hollow casing having an opening at one end in a manner such that said second casing is inverted relative to said first casing with the sealed end of said first casing adjacent an end of said second casing opposite the opening in said second casing; f. introducing potting material into said second casing in a manner encapsulating said first casing, said potting material being non-reactive with iodine; g. sealing the opening in said second casing; g. whereby any iodine-containing material which may happen to leak through the sealed end of said first casing must flow along the entire dimension of said first casing before reaching the sealed end of said second casing thereby minimizing the probability of any damaging effects from such leakage; i. placing said first and second casings in a third hollow casing having an opening at one end; and j. hermetically sealing a lid member to the opening in said third casing.
Claim 15
Dependent Claim
87 words
A method according to claim 12 wherein said first casing is of epoxy material and said iodine-containing material fills said casing to a level adjacent the opening and wherein the opening in said first casing is sealed by the steps of: a. adding a liquid epoxy material onto the contents of said casing adjacent the opening therein; and b. fitting a lid member of epoxy material into the opening and in contact with said epoxy material whereby said epoxy material bonds the lid member to the casing.
Claim 16
Dependent Claim
13 words
A method according to claim 12, wherein said potting material comprises polyester material.
Claim 17
Dependent Claim
28 words
A method according to claim 13, further including a step of placing a strip of fiberglass cloth material on the iodine-containing material prior to applying the epoxy material.
References Cited (Backward Citations)
US3003012A
Cited
US3196049A
Cited
US3314823A
Cited
US3424621A
Cited
US3484296A
Cited
US3553020A
Cited
US3723183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |