Patent US4463132A successfully refreshed from Google Patents.
US4086119A
Expired / Lapsed
US
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Method of making a battery separator
Assignee: Microporous Products LP
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Filing: 1976-09-24
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Granted: 1978-04-25
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Expires: 1996-09-24
Abstract
Abstract A battery separator in which plural sheets of microporous plastic material are connected by a strip or strips of polyvinylchloride in a manner suitable to form a sleeve. The strips may be high frequency heat sealed to the sheets or may be bonded thereto by solvating the outer edge portions of the strips, applying pressure between the strips and the sheets, and allowing the solvent to evaporate. A method of manufacturing a battery separator of the above type.
Inventors
- 👤 Camillo M. Vecchiotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:36
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C65/48; B29C65/4895; B29C65/50; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/45; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C67/00; B29C67/0044; H; H01; H01M; H01M50/00; H01M50/40; H01M50/463; H01M50/466; B29C66/70; B29C66/71; B29L; B29L2031/00; B29L2031/34; B29L2031/3468; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24777
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
194 words
A method of manufacturing a sleeve-like battery separator comprising the following steps: placing two sheets of microporous plastic material in a spaced parallel relationship about a platen having first and second opposed sides and a transverse edge extending between said opposed sides, maintaining said sheets of microporous plastic material in contact with the first and second opposed sides of said platen respectively such that corresponding side edges of said plastic sheets mutually extend beyond the transverse edge of said platen and define a pair of inner facing surfaces extending beyond said transverse edge of said platen, disposing a strip of plastic material onto said transverse edge of said platen between said inner facing surfaces of said plastic sheets in such a manner that said strip extends beyond the corresponding side edges of said plastic sheets, applying pressure to said strip of plastic material and to said plastic sheets to cause said strip of plastic material to be flush with said corresponding side edges of said plastic sheets, adhering the side edge portions of said plastic strip to each one of said pair of inner facing surfaces, respectively, thus to form said sleeve-like battery separator.
Claim 2
Independent Claim
194 words
A method of manufacturing a sleeve-like battery separator comprising the following steps: placing two sheets of microporous plastic material in a spaced parallel relationship about a platen having first and second opposed sides and a transverse edge extending between said opposed sides, maintaining said sheets of microporous plastic material in contact with the first and second opposed sides of said platen respectively such that corresponding side edges of said plastic sheets mutually extend beyond the transverse edge of said platen and define a pair of inner facing surfaces extending beyond said transverse edge of said platen, disposing a strip of plastic material onto said transverse edge of said platen between said inner facing surfaces of said plastic sheets in such a manner that said strip extends beyond the corresponding side edges of said plastic sheets, applying pressure to said strip of plastic material and to said plastic sheets to cause said strip of plastic material to be flush with said corresponding side edges of said plastic sheets, adhering the side edge portions of said plastic strip to each one of said pair of inner facing surfaces, respectively, thus to form said sleeve-like battery separator.
Claim 3
Dependent Claim
13 words
The method of claim 1, wherein said strips are of a polyvinylchloride material.
Claim 4
Dependent Claim
35 words
The method of claim 1, wherein said step of adhering further includes the step of applying high frequency heat energy to said strip while applying said pressure to heat seal said strip to said sheets.
Claim 5
Dependent Claim
38 words
The method of claim 3 wherein said step of applying pressure to said plastic strip is carried out with the aid of a second platen movable in the direction of the transverse side edge of said first-mentioned platen.
Claim 6
Dependent Claim
37 words
The method of claim 4 wherein said step of applying high frequency heat energy is carried out by establishing an electrical circuit between said first and second platens, and applying high frequency electric power to said circuit.
Claim 7
Dependent Claim
47 words
The method of claim 1 wherein said side edge portions of said plastic strip or the inner facing surfaces of said plastic sheets are solvated with solvent prior to said step of applying pressure and said solvent is evaporated subsequent to or during said step of adhering.
Claim 8
Dependent Claim
38 words
The method of claim 1 wherein said step of applying pressure to said plastic strip is carried out with the aid of a second platen movable in the direction of the transverse side edge of said first-mentioned platen.
References Cited (Backward Citations)
US1224530A
Cited
US1818159A
Cited
US2213395A
Cited
US3132981A
Cited
US3235040A
Cited
US3371003A
Cited
US3998680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |