Patent US4741979A successfully refreshed from Google Patents.
US4741979A
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Battery separator assembly
Assignee: Ultralife Corp
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Filing: 1986-05-19
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Granted: 1988-05-03
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Expires: 2006-05-19
Abstract
Abstract A separator assembly for use in batteries comprising a film bearing a thermal fuse in the form of a layer of wax coated fibers is disclosed.
Inventors
- 👤 Marilyn A. Faust
- 👤 Mary R. Suchanski
- 👤 Hans W. Osterhoudt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:43
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/449; H01M50/454; H01M10/00; H01M10/05; H01M10/056; H01M10/0564; H01M10/0566; H01M10/0568; H01M10/0569; H01M10/42; H01M10/4235; H01M50/414; H01M50/417; H01M50/44; H01M50/489; H01M50/491; H01M50/50; H01M50/572; H01M50/574; H01M50/581; H01M6/00; H01M6/14; H01M6/16; H01M6/162; H01M6/164; H01M6/166; H01M2200/00; H01M2200/10; H01M2200/103; H01M2300/00; H01M2300/0017; H01M2300/002; H01M2300/0025; H01M2300/0028; H01M2300/0037; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
39 words
A separator assembly for use in batteries comprising a film bearing a thermal fuse in the form of a layer of wax coated fibers; wherein said assembly is sufficiently porous to allow continuous flow of ions in the battery.
Claim 2
Dependent Claim
39 words
A separator assembly for use in batteries comprising a film bearing a thermal fuse in the form of a layer of wax coated fibers; wherein said assembly is sufficiently porous to allow continuous flow of ions in the battery.
Claim 3
Dependent Claim
16 words
The separator assembly of claim 1 wherein both the film and the thermal fuse is porous.
Claim 4
Dependent Claim
13 words
The separator assembly of claim 2 or 1 wherein the film is microporous.
Claim 5
Dependent Claim
20 words
The separator assembly of claim 2 or 1 wherein the wax has a melting point of 50° to 150° C.
Claim 6
Dependent Claim
46 words
The separator assembly of claim 2 or 1 wherein the wax is selected from the group consisting of (a) a mixture of paraffin and a thermoplastic polymer, (b) beeswax, (c) microcrystalline wax, (d) candellila wax, (e) rice bran wax, (f) polyethylene wax, and (g) polypropylene wax.
Claim 7
Dependent Claim
55 words
A battery comprising an anode, a cathode, an electrolyte and a separator assembly between the anode and the cathode; wherein the separator assembly (a) comprises a film bearing a thermal fuse in the form of a layer of wax coated fibers and (b) is sufficiently porous to allow continuous flow of ions in said battery.
Claim 8
Dependent Claim
55 words
A battery comprising an anode, a cathode, an electrolyte and a separator assembly between the anode and the cathode; wherein the separator assembly (a) comprises a film bearing a thermal fuse in the form of a layer of wax coated fibers and (b) is sufficiently porous to allow continuous flow of ions in said battery.
Claim 9
Dependent Claim
9 words
The battery of claim 6 comprising a lithium anode.
Claim 10
Dependent Claim
10 words
The battery of claim 6 comprising a MnO 2 cathode.
Claim 11
Dependent Claim
14 words
The battery of claim 7, 8 or 6 wherein the separator assembly is porous.
Claim 12
Dependent Claim
46 words
The battery of claim 7, 8, 9 or wherein the wax is selected from the group consisting of (a) a mixture of paraffin and a thermoplastic polymer, (b) beeswax, (c) microcrystalline wax, (d) candellila wax, (e) rice bran wax, (f) polyethylene wax, and (g) polypropylene wax.
Claim 13
Dependent Claim
24 words
The battery of claim 7, 8, 9 or 6 wherein the wax has a melting point in the range of 50° to 150° C.
Claim 14
Dependent Claim
56 words
A battery comprising a lithium anode, an MnO 2 cathode, an electrolyte comprising 1M LiBF 4 in a solvent mixture of butyrolactone and dimethoxyethane and a separator assembly between the anode and cathode; wherein the separator assembly comprises a porous film bearing a thermal fuse in the form of a porous layer of wax coated fibers.
Claim 15
Dependent Claim
56 words
A battery comprising a lithium anode, an MnO 2 cathode, an electrolyte comprising 1M LiBF 4 in a solvent mixture of butyrolactone and dimethoxyethane and a separator assembly between the anode and cathode; wherein the separator assembly comprises a porous film bearing a thermal fuse in the form of a porous layer of wax coated fibers.
Claim 16
Dependent Claim
59 words
A battery comprising a lithium anode, an MnO 2 cathode, an electrolyte comprising 1M LiCF 3 SO 3 in a solvent mixture of butyrolactone and dimethoxyethane and a separator assembly between the anode and the cathode; wherein the separator assembly comprises a porous film bearing a thermal fuse in the form of a porous layer of wax coated fibers.
Claim 17
Dependent Claim
59 words
A battery comprising a lithium anode, an MnO 2 cathode, an electrolyte comprising 1M LiCF 3 SO 3 in a solvent mixture of butyrolactone and dimethoxyethane and a separator assembly between the anode and the cathode; wherein the separator assembly comprises a porous film bearing a thermal fuse in the form of a porous layer of wax coated fibers.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |