Patent US5789096A successfully refreshed from Google Patents.
US5789096A
Expired / Lapsed
US
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Gas-tight alkaline accumulator with valve assembly
Assignee: Christoph Emmerich GmbH and Co KG
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Filing: 1994-07-16
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Granted: 1998-08-04
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Expires: 2014-07-16
Abstract
Abstract In a gas-tight alkaline accumulator with a casing which at least partially comprises plastic material and in which are arranged electrodes which are surrounded by an electrolyte and which are respectively separated from each other by a separator, wherein the electrodes are connected to pole contacts for electric current to be fed to and away therefrom, in order to increase the operating reliability of the accumulator and to avoid further disadvantages, there is provided a valve having an opening which passes through the casing of the accumulator, and a deformable element which, in the event of an increased pressure occurring within the casing, provides for liberation of the opening and, after a drop in the increased pressure, closing of the opening.
Inventors
- 👤 Manfred Kilb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:43
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/317; H01M50/325; H01M50/342; H01M50/3425; H01M50/10; H01M50/102; H01M50/103; H01M50/172; H01M50/174; H01M50/176; H01M10/00; H01M10/24; H01M10/34; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
126 words
A gas-tight alkaline accumulator comprising: a casing comprised at least partially of plastic material, electrodes arranged in said casing, a separator separating said electrodes, an electrolyte surrounding said electrodes, pole contacts connected to said electrodes for feeding electric current to and away from said electrodes, a valve (9) for reducing increased pressure occurring in said accumulator, said valve having an opening (10) leading through said casing (2, 3), and a deformable element (11) arranged to provide liberation of said opening (10) in the event an increased pressure occurs within said casing (2, 3) and for closing said opening (10) after said increased pressure falls, such that a predeterminable increased pressure for opening said valve (9) is produced by a defined upsetting of said deformable element (11).
Claim 2
Dependent Claim
126 words
A gas-tight alkaline accumulator comprising: a casing comprised at least partially of plastic material, electrodes arranged in said casing, a separator separating said electrodes, an electrolyte surrounding said electrodes, pole contacts connected to said electrodes for feeding electric current to and away from said electrodes, a valve (9) for reducing increased pressure occurring in said accumulator, said valve having an opening (10) leading through said casing (2, 3), and a deformable element (11) arranged to provide liberation of said opening (10) in the event an increased pressure occurs within said casing (2, 3) and for closing said opening (10) after said increased pressure falls, such that a predeterminable increased pressure for opening said valve (9) is produced by a defined upsetting of said deformable element (11).
Claim 3
Dependent Claim
31 words
The accumulator according to claim 1, wherein said deformable element (11) is arranged to bear forcibly and sealingly against said opening (10) by virtue of elasticity of said deformable element (11).
Claim 4
Dependent Claim
21 words
The accumulator according to claim 1, wherein said deformable element (11) is arranged to be supported opposite to said opening (10).
Claim 5
Dependent Claim
21 words
The accumulator according to claim 1, wherein said increased pressure that opens said opening (10) is between 2.5 and 10 bars.
Claim 6
Dependent Claim
13 words
The accumulator according to claim 4, wherein said increased pressure is 3.5 bars.
Claim 7
Dependent Claim
33 words
The accumulator according to claim 1, further comprising a discharge passage (14) arranged adjacent said deformable element (11), which discharge passage (14) extends within a wall (15) arranged beside said deformable element (11).
Claim 8
Dependent Claim
48 words
The accumulator according to claim 1, further comprising a valve chamber (13) within which said deformable element (11) is arranged with lateral clearance, and a retaining element (12) for holding said deformable element (11) at a rear side of said deformable element (11) within said valve chamber (13).
Claim 9
Dependent Claim
48 words
The accumulator according to claim 1, further comprising a cup-shaped cover cap (22) engaging laterally with said deformable element (11) and contacting and bearing against said deformable element (11) on a rear side of said deformable element (11), said cover cap (22) having a valve discharge opening (23).
Claim 10
Dependent Claim
62 words
The accumulator according to claim 1, further comprising a cup-shaped cover cap (22) engaging laterally with said deformable element (11) and contacting and bearing against said deformable element (11) on a rear side of said deformable element (11), said cover cap having an end portion in which said opening (10) is arranged, said casing (2, 3) having a valve discharge opening (23).
Claim 11
Dependent Claim
24 words
The accumulator according to claim 8, wherein said cover cap (22) has a lateral edge (24) that is wider in an outer end region.
Claim 12
Dependent Claim
19 words
The accumulator according to claim 1, wherein said valve (9) is arranged in a cover (3) of said accumulator.
Claim 13
Dependent Claim
18 words
The accumulator according to claim 1, wherein said valve (9) is arranged between said pole contacts (7, 8).
Claim 14
Dependent Claim
14 words
The accumulator according to claim 1, wherein said accumulator (1) comprises a prismatic accumulator.
Claim 15
Dependent Claim
14 words
The accumulator according to claim 13, wherein said accumulator (1) comprises a rectangular accumulator.
Claim 16
Dependent Claim
25 words
The accumulator according to claim 1, wherein said deformable element has been hot-in-hot injection welded at least into a part of said casing (2, 3).
Claim 17
Dependent Claim
27 words
The accumulator according to claim 15, wherein said deformable element (11) has been hot-in-hot injection welded simultaneously with seals (18, 19, 20) of said casing (2, 3).
Claim 18
Dependent Claim
22 words
The accumulator according to claim 15, wherein said deformable element (11) has been hot-in-hot injection welded simultaneously with a cover seal (20).
Claim 19
Dependent Claim
23 words
The accumulator according to claim 15, wherein said deformable element (11) has been hot-in-hot injection welded simultaneously with pole contact seals (18, 19).
Claim 20
Dependent Claim
24 words
The accumulator according to claim 1, wherein at least a part of said casing (2) and said deformable element (11) comprise a thermoplastic elastomer.
Claim 21
Dependent Claim
23 words
The accumulator according to claim 19, wherein said thermoplastic elastomer is selected from the group consisting of modified polyamide, styrene-ethylene-butylenestyrene copolymer and polypropylene.
Claim 22
Dependent Claim
19 words
The accumulator according to claim 19, wherein said casing (2) and said deformable element (11) are of different hardnesses.
Claim 23
Dependent Claim
30 words
The accumulator according to claim 1, wherein said casing includes material selected from the group consisting of glass, carbon, carbon-reinforced plastic material, and boron fibers embedded in said plastic material.
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) | 2001-08-03 | 2002-02-02 | 2002-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-03 | 2006-02-02 | 2006-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-03 | 2010-02-02 | 2010-08-04 | $7700.00 | Window Closed / Lapsed |