US4011371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for detecting and neutralizing leaks in electrochemical cells
Assignee: GTE Sylvania Inc
•
Filing: 1975-12-17
•
Granted: 1977-03-08
•
Expires: 1995-12-17
Abstract
Abstract A neutralizing agent is maintained adjacent the seal area of electrochemical cells containing corrosive electrolytes. The neutralizing agent can be kept in a pocket or depression formed in a flange next to the seal or can be contained in a suitable plastic ring which surrounds the seal. When the electrolyte is thionyl chloride and aluminum chloride a suitable neutralizing agent is sodium carbonate.
Inventors
- 👤 Joseph L. Hallett
- 👤 Peter H. Rollason
- 👤 Thaddeus V. Rychlewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:49
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/172; H01M50/174; H01M50/183; H01M50/186; H01M50/50; H01M50/571; H01M6/00; H01M6/50; H01M6/5044; H01M6/505; H01M10/00; H01M10/42; H01M10/4228; H01M2200/00; H01M50/19; H01M50/191; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
84 words
An electrochemical cell comprising: a container having a substantially cup-shaped portion and a lid therefor peripherally sealed to said cup-shaped portion; a positive and a negative electrode within said sealed container; a corrosive electrolyte within said sealed container and encompassing said electrodes; and means associated with said seal and forming an integral part with said container including a neutralizing agent for said corrosive electrolyte in the event of a leak, said integral part comprising a depression formed in a flange of said cup-shaped portion.
Claim 2
Dependent Claim
84 words
An electrochemical cell comprising: a container having a substantially cup-shaped portion and a lid therefor peripherally sealed to said cup-shaped portion; a positive and a negative electrode within said sealed container; a corrosive electrolyte within said sealed container and encompassing said electrodes; and means associated with said seal and forming an integral part with said container including a neutralizing agent for said corrosive electrolyte in the event of a leak, said integral part comprising a depression formed in a flange of said cup-shaped portion.
Claim 3
Dependent Claim
14 words
The cell of claim 1 wherein said neutralizing agent is contained within said depression.
Claim 4
Dependent Claim
12 words
The cell of claim 2 wherein said neutralizing agent is sodium carbonate.
Claim 5
Dependent Claim
73 words
An electrochemical cell comprising: a container having a substantially cup-shaped portion and a lid therefor peripherally sealed to said cup-shaped portion; a positive and a negative electrode within said sealed container; a corrosive electrolyte within said sealed container and encompassing said electrodes; and means associated with said seal including a neutralizing agent for said corrosive electrolyte in the event of a leak, said last named means being external to and surrounding said seal.
Claim 6
Dependent Claim
73 words
An electrochemical cell comprising: a container having a substantially cup-shaped portion and a lid therefor peripherally sealed to said cup-shaped portion; a positive and a negative electrode within said sealed container; a corrosive electrolyte within said sealed container and encompassing said electrodes; and means associated with said seal including a neutralizing agent for said corrosive electrolyte in the event of a leak, said last named means being external to and surrounding said seal.
Claim 7
Dependent Claim
20 words
The cell of claim 4 wherein said last named means comprises an annular hollow plastic ring which surrounds said seal.
Claim 8
Dependent Claim
16 words
The cell of claim 5 wherein said neutralizing agent is contained within said hollow plastic ring.
Claim 9
Dependent Claim
12 words
The cell of claim 6 wherein said neutralizing agent is sodium carbonate.
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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |