US4328289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical cell having a resealable vent closure
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1980-09-26
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Granted: 1982-05-04
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Expires: 2000-09-26
Abstract
Abstract A resealable vent closure for galvanic cells, such as non-aqueous oxyhalide cells, which comprises a castellated type of cap employed to compress and retain a resilient deformable member over a vent orifice in the cell's housing such that the compressed resilient deformable member will form a normally tight seal at the vent orifice which will vent and reseal after a predetermined pressure build up within the cell. The invention is also directed to a method for assembling an electrochemical cell, such as a nonaqueous oxyhalide cell, with the above-described resealable vent closure.
Inventors
- 👤 Ronald L. Zupancic
- 👤 Lewis F. Urry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:19
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/317; H01M50/325; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
176 words
An electrochemical cell in which the active components of the cell are assembled within a housing comprising a container closed at its open end by a cover and having at least one vent orifice for releasing pressurized material from within the housing; the improvement being a resealable vent closure comprising in combination a resilient deformable member of an elastomeric material positioned to overlie said vent orifice, a retainer means for compressing said resilient deformable member against said vent orifice thereby forming a normally fluid-tight seal at said orifice, said retaining means comprising a cylindrical cap member surrounding said resilient deformable member and said vent orifice and being secured at one of its ends to the housing and having at its opposite end a plurality of extending tabs, a retainer element positioned within said cap member and disposed over and compressing said resilient deformable member over said vent orifice and whereby at least a numerical portion of said extending tabs is turned over the retainer element thereby securing said retainer element against said compressed resilient deformable member.
Claim 2
Dependent Claim
176 words
An electrochemical cell in which the active components of the cell are assembled within a housing comprising a container closed at its open end by a cover and having at least one vent orifice for releasing pressurized material from within the housing; the improvement being a resealable vent closure comprising in combination a resilient deformable member of an elastomeric material positioned to overlie said vent orifice, a retainer means for compressing said resilient deformable member against said vent orifice thereby forming a normally fluid-tight seal at said orifice, said retaining means comprising a cylindrical cap member surrounding said resilient deformable member and said vent orifice and being secured at one of its ends to the housing and having at its opposite end a plurality of extending tabs, a retainer element positioned within said cap member and disposed over and compressing said resilient deformable member over said vent orifice and whereby at least a numerical portion of said extending tabs is turned over the retainer element thereby securing said retainer element against said compressed resilient deformable member.
Claim 3
Dependent Claim
41 words
The electrochemical cell of claim 1 wherein said cylindrical cap member has a first numerical portion of the extending tabs inwardly disposed parallel to the surface defining the vent orifice thereby providing an inward flange onto which the retainer element seats.
Claim 4
Dependent Claim
23 words
The electrochemical cell of claim 1 or 2 wherein a second element is disposed between the vent orifice and the resilient deformable member.
Claim 5
Dependent Claim
34 words
The electrochemical cell of claim 1 or 2 wherein the resilient deformable member is at least partially encased with a chemically inert member disposed such that the chemically inert member overlies the vent orifice.
Claim 6
Dependent Claim
17 words
The electrochemical cell of claim 1 or 2 wherein said cylindrical cap member has a vent opening.
Claim 7
Dependent Claim
38 words
The electrochemical cell of claim 1 which employs a cathode-electrolyte which contains at least one liquid oxyhalide selected from the group consisting of thionyl chloride, sulfuryl chloride, phosphorous oxychloride, thionyl bromide, chromyl chloride, vanadyl tribromide and selenium oxychloride.
Claim 8
Dependent Claim
25 words
The electrochemical cell of claim 6 wherein the at least one liquid oxyhalide is selected from the group consisting of thionyl chloride and sulfuryl chloride.
Claim 9
Dependent Claim
24 words
The electrochemical cell of claim 1 or 6 which employs an anode selected from the group consisting of lithium, sodium, calcium, potassium and aluminum.
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) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |