Patent US4068047A successfully refreshed from Google Patents.
US4068047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat-pack battery separator
Assignee: Fiber Technology Corp
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Filing: 1976-12-10
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Granted: 1978-01-10
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Expires: 1996-12-10
Abstract
Abstract A novel battery separator for a flat-pack or planar battery is disclosed wherein a nonwoven fabric is disposed on and across a plastic frame or grid, the outer edges of the fabric being disposed on said plastic frame are of extremely low fiber density and being oriented predominantly in a direction normal to each side of the frames so as to facilitate the more complete thermal pressurized bonding of a stack of separators and similarly electrodes by a sealing of the outer edges of the respective plastic frames. A more complete seal is thus formed insuring against the leaking or escaping of the liquid electrolyte contained therein.
Inventors
- 👤 Phoenix Nathan Dangel
- 👤 Preston Fairfax Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:39
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/44; H01M50/411; H01M50/414; H01M50/42; H01M50/463; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24132; Y10T428/24273; Y10T428/24298; Y10T428/24322
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
A battery separator for planar batteries comprising: a generally rectangular supporting grid of a hot melt material, said grid having a generally rectangular opening therein; a nonwoven fabric disposed across said grid and said opening, a majority of the fibers in said fabric are located within said opening, said fibers disposed therein that are directly adjacent said grid are oriented in a direction substantially parallel to said axis of said adjacent grid, the remaining fibers in said opening are in substantially random orientation, a minority of said fibers in said fabric being disposed on said grid and being oriented thereon in a direction substantially normal to the axis of said grid.
Claim 2
Dependent Claim
111 words
A battery separator for planar batteries comprising: a generally rectangular supporting grid of a hot melt material, said grid having a generally rectangular opening therein; a nonwoven fabric disposed across said grid and said opening, a majority of the fibers in said fabric are located within said opening, said fibers disposed therein that are directly adjacent said grid are oriented in a direction substantially parallel to said axis of said adjacent grid, the remaining fibers in said opening are in substantially random orientation, a minority of said fibers in said fabric being disposed on said grid and being oriented thereon in a direction substantially normal to the axis of said grid.
Claim 3
Dependent Claim
21 words
The battery separator of claim 1 wherein over 80% of the fibers in said nonwoven fabric are located within said openings.
Claim 4
Dependent Claim
31 words
The battery separator of claim 1 wherein said nonwoven fabric consists of a blend of thermoplastic and non-thermoplastic fibers, said thermoplastic fibers comprising at least 10% of the total fabric weight.
Claim 5
Dependent Claim
29 words
The battery separator of claim 1 wherein said nonwoven fabric consists of a 50%-50% blend of fibers of a polymer of vinyl acetate and vinyl chloride and acrylic fibers.
Claim 6
Dependent Claim
144 words
In a planar battery having, in staked relationship, a planar anode, a planar cathode, a planar separator disposed between said anode and cathode, a liquid electrolyte in contact with said anode, cathode and separator, the improvement comprising a planar separator comprising a generally rectangular supporting grid of a hot melt material, said grid having a generally rectangular opening therein; a nonwoven fabric disposed across said grid and said opening, a majority of the fibers in said fabric are located within said opening, said fibers disposed therein that are directly adjacent said grid are oriented in a direction substantially parallel to said axis of said grid, the remaining fibers in said opening are in substantially random orientation, a minority of said fibers in said fabric being disposed on said grid and being oriented thereon in a direction substantially normal to the axis of said grid.
Claim 7
Dependent Claim
144 words
In a planar battery having, in staked relationship, a planar anode, a planar cathode, a planar separator disposed between said anode and cathode, a liquid electrolyte in contact with said anode, cathode and separator, the improvement comprising a planar separator comprising a generally rectangular supporting grid of a hot melt material, said grid having a generally rectangular opening therein; a nonwoven fabric disposed across said grid and said opening, a majority of the fibers in said fabric are located within said opening, said fibers disposed therein that are directly adjacent said grid are oriented in a direction substantially parallel to said axis of said grid, the remaining fibers in said opening are in substantially random orientation, a minority of said fibers in said fabric being disposed on said grid and being oriented thereon in a direction substantially normal to the axis of said grid.
Claim 8
Dependent Claim
20 words
The battery of claim 5 wherein over 80% of the fibers in said nonwoven fabric are located within said openings.
Claim 9
Dependent Claim
30 words
The battery of claim 5 wherein said nonwoven fabric consists of a blend of thermoplastic and non-thermoplastic fibers, said thermoplastic fibers comprising at least 10% of the total fabric weight.
Claim 10
Dependent Claim
27 words
The battery of claim 5 wherein said nonwoven fabric consists of 50%-50% blend of fibers of a polymer of vinyl acetate and vinyl chloride and acrylic fibers.
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) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |