US4091183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accumulator having deformation resisting conducting core
Assignee: Individual
•
Filing: 1977-04-14
•
Granted: 1978-05-23
•
Expires: 1997-04-14
Abstract
Abstract The major surfaces of a solid plate-like conductive core in an accumulator are adjacent to slabs of positive active material which are flanked by porous layers consisting of sintered synthetic plastic material or of compacted glass wool, synthetic plastic filaments or rock wool. A sheath consisting of polyvinyl chloride has a chamber which receives the core, the slabs and the layers and is formed with vertical slots for the passage of electrolyte. The major surfaces of the core are profiled to enlarge the area of contact with active material, and the inner sides of the layers are also profiled to enlarge the area of contact with the outer sides of the slabs.
Inventors
- 👤 Hans Niggl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:41
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M50/00; H01M50/40; H01M50/463; H01M50/466; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
63 words
In an accumulator, the combination of a solid plate-like conductive core; a body of active material contacting at least the major portion of the exterior of said core; and an envelope which confines said active material, including porous layers surrounding said body, said layers having inner surfaces in substantially continuous contact with said body and at least one of said surfaces being profiled.
Claim 2
Dependent Claim
63 words
In an accumulator, the combination of a solid plate-like conductive core; a body of active material contacting at least the major portion of the exterior of said core; and an envelope which confines said active material, including porous layers surrounding said body, said layers having inner surfaces in substantially continuous contact with said body and at least one of said surfaces being profiled.
Claim 3
Dependent Claim
26 words
The combination of claim 1, wherein said core has two major surfaces and said body includes slabs sandwiched between said layers and the respective major surfaces.
Claim 4
Dependent Claim
18 words
The combination of claim 1, wherein the cross-section of said profiled inner surface includes raised and recessed portions.
Claim 5
Dependent Claim
16 words
The combination of claim 3, wherein said raised portions are ridges having a triangular cross-sectional outline.
Claim 6
Dependent Claim
21 words
The combination of claim 1, wherein the height of said raised portions is in the range of 1 to 2 mm.
Claim 7
Dependent Claim
15 words
The combination of claim 1, wherein said profiled inner surface comprises a plurality of protuberances.
Claim 8
Dependent Claim
36 words
The combination of claim 6, wherein said protuberances are pyramids each having a square base and four sides disposed in planes making an angle of between 60° and 70° with the plane of the respective base.
Claim 9
Dependent Claim
18 words
The combination of claim 1, wherein the layer having said profiled inner surface has a substantially constant thickness.
Claim 10
Dependent Claim
17 words
The combination of claim 1, wherein said layers consist of deep-drawn, extruded or molded synthetic plastic material.
Claim 11
Dependent Claim
12 words
The combination of claim 1, wherein said envelope consists of said layers.
Claim 12
Dependent Claim
25 words
The combination of claim 1, wherein said envelope further includes a hollow apertured sheath having a chamber for said core, said body and said layers.
Claim 13
Dependent Claim
12 words
The combination of claim 11, wherein said sheath consists of polyvinyl chloride.
Claim 14
Dependent Claim
24 words
The combination of claim 11, wherein the apertures of said sheath are elongated slots which are substantially vertical when the accumulator is in use.
Claim 15
Dependent Claim
47 words
The combination of claim 11, wherein said core is elongated and includes two longitudinally extending marginal portions, said sheath including two apertured side walls and two end walls, at least one of said end walls having an internal channel for the respective marginal portion of said core.
Claim 16
Dependent Claim
28 words
The combination of claim 1, wherein said core has two major surfaces in contact with said active material and at least one of said major surfaces is profiled.
Claim 17
Dependent Claim
22 words
The combination of claim 15, wherein said core is elongated and said one major surface has alternating longitudinally extending ribs and grooves.
Claim 18
Dependent Claim
19 words
The combination of claim 16, wherein said ribs and grooves are substantially vertical when the accumulator is in use.
Claim 19
Dependent Claim
49 words
The combination of claim 15, wherein each of said major surfaces is profiled and each of said major surfaces includes raised and recessed portions, each raised portion of one of said major surfaces being located opposite a raised portion of the other of said major surfaces, and vice versa.
Claim 20
Dependent Claim
20 words
The combination of claim 1, wherein said core includes a central portion and a reinforcing frame surrounding said central portion.
Claim 21
Dependent Claim
12 words
The combination of claim 1, wherein said layers consist of acid-resistant material.
Claim 22
Dependent Claim
33 words
The combination of claim 20, wherein the material of said layers is selected from the group consisting of sintered synthetic plastic material, compacted glass fibers, compacted synthetic plastic filaments and compacted rock wool.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |