Patent US4275128A successfully refreshed from Google Patents.
US4275128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cover apparatus for monoblock storage battery
Assignee: Furukawa Battery Co Ltd
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Filing: 1980-01-07
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Granted: 1981-06-23
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Expires: 2000-01-07
Abstract
Abstract A cover apparatus for a monoblock storage battery in which a case-shaped cover plate is provided on its reverse surface with a common exhaust passage which is formed between mutually facing walls and is covered with a covering wall and also with baffle walls so disposed outside respective ventilation openings made in the facing wall or walls as to leave respective gaps therebetween, and the respective gaps are covered with a covering wall for obstructing gas generated in cell chambers from flowing directly into the common exhaust passage.
Inventors
- 👤 Ichiro Sano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:37
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/383; H01M50/10; H01M50/147; H01M50/35; H01M50/367; H01M50/394; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A cover apparatus for a monoblock storage battery comprising a case-shaped cover plate; cell partition walls partitioning the interior of the cover plate into plural cell chambers; mutually facing walls on the reverse surface of the cover plate and extending across said cell partition walls, at least one of the facing walls being provided with ventilation openings corresponding to the respective cell chambers, so that a space between the facing walls is formed into a common exhaust passage which is in communication with the respective cell chambers through the respective ventilation openings; baffle walls provided outside the respective ventilation openings so as to leave respective gaps therebetween; a covering wall covering the lower surface of the common exhaust passage; and a covering wall covering the lower surfaces of the respective gaps.
Claim 2
Dependent Claim
131 words
A cover apparatus for a monoblock storage battery comprising a case-shaped cover plate; cell partition walls partitioning the interior of the cover plate into plural cell chambers; mutually facing walls on the reverse surface of the cover plate and extending across said cell partition walls, at least one of the facing walls being provided with ventilation openings corresponding to the respective cell chambers, so that a space between the facing walls is formed into a common exhaust passage which is in communication with the respective cell chambers through the respective ventilation openings; baffle walls provided outside the respective ventilation openings so as to leave respective gaps therebetween; a covering wall covering the lower surface of the common exhaust passage; and a covering wall covering the lower surfaces of the respective gaps.
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) | 1984-06-22 | 1984-12-22 | 1985-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-22 | 1988-12-22 | 1989-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-22 | 1992-12-22 | 1993-06-23 | $7700.00 | Window Closed / Lapsed |