US4006282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal arrangement for a lead terminal with the cover of a storage cell
Assignee: SAFT Societe des Accumulateurs Fixes et de Traction SA
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Filing: 1975-12-15
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Granted: 1977-02-01
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Expires: 1995-12-15
Abstract
Abstract Seal in the cover of a storage cell for a malleable metal terminal post such as lead or indium terminal post provided with a blind hole opening towards the outside and a shoulder inside the storage cell. A flexible gasket is situated between the cover and the shoulder. An expandable rivet or the like is inserted in the blind hole and has a head that bears on the external face of the cover. Extraction of the rivet expands and shortens the terminal post and compresses the flexible gasket into sealing relationship between the shoulder and the cover without causing the expanded portion of the terminal post to come into contact with the cover thus avoiding danger of cracking the latter. Application is to small sealed lead storage cells.
Inventors
- 👤 Sipic Antoine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:57
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/172; H01M50/50; H01M50/543; H01M50/562; H01M50/564; H01M50/567; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
128 words
Seal in the cover of a lead-acid storage cell comprising a terminal post of malleable metal having a shoulder on the portion of said post situated inside the storage cell and a blind hole in said terminal post opening toward the outside, an expanded headed part whose head bears on the cover, a flexible gasket situated between a portion of the cover and the shoulder of the terminal post, said expanded part acting to expand a portion of said post and also resulting in compression of the flexible gasket between the shoulder and the cover without, however, having the resultant expansion of the terminal post under the action of the said expanded part cause contact between the portion of said cover and the expanded portion of said post.
Claim 2
Dependent Claim
128 words
Seal in the cover of a lead-acid storage cell comprising a terminal post of malleable metal having a shoulder on the portion of said post situated inside the storage cell and a blind hole in said terminal post opening toward the outside, an expanded headed part whose head bears on the cover, a flexible gasket situated between a portion of the cover and the shoulder of the terminal post, said expanded part acting to expand a portion of said post and also resulting in compression of the flexible gasket between the shoulder and the cover without, however, having the resultant expansion of the terminal post under the action of the said expanded part cause contact between the portion of said cover and the expanded portion of said post.
Claim 3
Dependent Claim
20 words
Seal according to claim 1, including a ring for centering the terminal post at the time of expansion in assembly.
Claim 4
Dependent Claim
22 words
Seal according to claim 2, wherein said ring is positioned on the top of the terminal post and has a serrated shape.
Claim 5
Dependent Claim
33 words
Seal according to claim 2, wherein the said ring has an L-shaped cross-section, its cylindrical portion surrounding the terminal post and its plane portion lying on the top end of the terminal post.
Claim 6
Dependent Claim
31 words
Seal according to claim 2, wherein the ring is partly embedded in the material of the cover with a protruding portion, said protruding portion serving to center the said terminal post.
Claim 7
Dependent Claim
147 words
Sealing device for a storage cell comprising a cover having an opening and a cylindrical skirt, a terminal post of malleable metal extending into said skirt and having a smaller external diameter than the inner diameter of said skirt, said post having a shoulder and also a blind hole opening upwardly toward the under face of said cover, an expanded headed part positioned in said hole with its head bearing on the outer face of said cover, a recess in said skirt adjacent its inner and, a flexible gasket positioned in said recess and engaged by said shoulder, the expansion of said expanded part effecting expansion of a portion of said terminal post and effecting sealing compression of said flexible gasket between said shoulder and walls of said recess without, however, causing resultant expansion of said terminal post into contact with the inner wall of said skirt.
Claim 8
Dependent Claim
147 words
Sealing device for a storage cell comprising a cover having an opening and a cylindrical skirt, a terminal post of malleable metal extending into said skirt and having a smaller external diameter than the inner diameter of said skirt, said post having a shoulder and also a blind hole opening upwardly toward the under face of said cover, an expanded headed part positioned in said hole with its head bearing on the outer face of said cover, a recess in said skirt adjacent its inner and, a flexible gasket positioned in said recess and engaged by said shoulder, the expansion of said expanded part effecting expansion of a portion of said terminal post and effecting sealing compression of said flexible gasket between said shoulder and walls of said recess without, however, causing resultant expansion of said terminal post into contact with the inner wall of said skirt.
Claim 9
Dependent Claim
15 words
Sealing device according to claim 6 including means for centering said post in said skirt.
Claim 10
Dependent Claim
21 words
Sealing device according to claim 6 including means for centering said post in said skirt, said means comprising a ring-like member.
Claim 11
Dependent Claim
12 words
Sealing device according to claim 8 wherein said ring-like member is serrated.
Claim 12
Dependent Claim
13 words
Sealing device according to claim 8 wherein said ring-like member has L-shaped section.
Claim 13
Dependent Claim
23 words
Sealing device according to claim 6 including means for centering said post in said skirt comprising a ring partially embedded in said skirt.
Claim 14
Independent Claim
199 words
A device for effecting sealing for a storage cell comprising a cover having an opening and a cylindrical skirt, a terminal post of malleable metal extending into said skirt and having a smaller external diameter than the inner diameter of said skirt, said post having a shoulder and also a blind hole opening upwardly toward the underface of said cover, an expandable headed part positioned in said hole with its head bearing on the outer face of said cover, a recess in said skirt adjacent to its inner end, a flexible gasket positioned in said recess and engaged by said shoulder, and means for expanding said expandable part to effect expansion of a portion of said terminal post and cause sealing compression of said flexible gasket between said shoulder and walls of said recess, without, however, causing resultant expansion of said terminal post into contact with the inner wall of said skirt, said means for expanding said expandable part comprising a withdrawable pin mounted in said part, said pin having a conical head whose largest diameter exceeds the inner diameter of said expandable part and which on withdrawal of said pin passes through said part and effects expansion thereof.
Claim 15
Independent Claim
199 words
A device for effecting sealing for a storage cell comprising a cover having an opening and a cylindrical skirt, a terminal post of malleable metal extending into said skirt and having a smaller external diameter than the inner diameter of said skirt, said post having a shoulder and also a blind hole opening upwardly toward the underface of said cover, an expandable headed part positioned in said hole with its head bearing on the outer face of said cover, a recess in said skirt adjacent to its inner end, a flexible gasket positioned in said recess and engaged by said shoulder, and means for expanding said expandable part to effect expansion of a portion of said terminal post and cause sealing compression of said flexible gasket between said shoulder and walls of said recess, without, however, causing resultant expansion of said terminal post into contact with the inner wall of said skirt, said means for expanding said expandable part comprising a withdrawable pin mounted in said part, said pin having a conical head whose largest diameter exceeds the inner diameter of said expandable part and which on withdrawal of said pin passes through said part and effects expansion thereof.
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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |