US3736655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming and placing tubular battery separators and means embodying the method
Assignee: ESB Inc
•
Filing: 1970-11-18
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Granted: 1973-06-05
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Expires: 1990-11-18
Abstract
Abstract Battery separator material in strip form and cut to proper size is entered tangentially into a borehole. Air streams directed tangentially to the borehole cause the strip of material to roll up into a tube of controlled diameter. When the tube is wound, a pressure differential between the two ends of the borehole causes the tube to eject into a waiting battery assembly placed on the trajectory of the rolled tube.
Inventors
- 👤 M Beckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:08
CPC Classifications
B; B31; B31C; B31C1/00; B29; B29C; B29C2793/00; B29C2793/0081; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
A method for forming a tubular battery separator from a sheEt of battery separator material which comprises: a. transporting a sheet of battery separator material by first air jet means into a slot formed in a block of material tantential to a borehole through the block; b. rolling the sheet into a tube in the borehole by second air jet means tangential to the borehole; and c. ejecting the rolled tube from the borehole by means causing a pressure differential between the ends of the borehole.
Claim 2
Independent Claim
86 words
A method for forming a tubular battery separator from a sheEt of battery separator material which comprises: a. transporting a sheet of battery separator material by first air jet means into a slot formed in a block of material tantential to a borehole through the block; b. rolling the sheet into a tube in the borehole by second air jet means tangential to the borehole; and c. ejecting the rolled tube from the borehole by means causing a pressure differential between the ends of the borehole.
Claim 3
Dependent Claim
25 words
A method as defined in claim 1 in which the means causing the pressure differential comprises at least one baffle cooperating with a borehole end.
Claim 4
Independent Claim
101 words
A method for forming a tubular battery separator and placing it in a cell assembly which comprises: a. transporting a sheet of battery separator material material by first air jet means into a slot formed in a block of material tangential to a borehole through the block; b. rolling the sheet into a tube in the borehole by second air jet means tangential to the borehole; and c. transferring the rolled tube by means causing a pressure differential between the ends of the borehole from the borehole to a hollow cell assembly located outside the borehole and on the axis thereof.
Claim 5
Independent Claim
101 words
A method for forming a tubular battery separator and placing it in a cell assembly which comprises: a. transporting a sheet of battery separator material material by first air jet means into a slot formed in a block of material tangential to a borehole through the block; b. rolling the sheet into a tube in the borehole by second air jet means tangential to the borehole; and c. transferring the rolled tube by means causing a pressure differential between the ends of the borehole from the borehole to a hollow cell assembly located outside the borehole and on the axis thereof.
Claim 6
Independent Claim
115 words
A method for forming a tubular battery separator from a continuous web of material and placing it in a cell assembly which comprises: a. cutting a piece of separator material from a continuous web; b. transporting the sheet of material by first air jet means into a slot formed in a block of material tangential to a borehole through the block; c. rolling the sheet into a tube in the borehole by second air jet means tangential to the borehole; and d. transferring the rolled tube by means causing a pressure differential between the ends of the borehole from the borehole to a hollow cell assembly located outside the borehole and on the axis thereof.
Claim 7
Independent Claim
115 words
A method for forming a tubular battery separator from a continuous web of material and placing it in a cell assembly which comprises: a. cutting a piece of separator material from a continuous web; b. transporting the sheet of material by first air jet means into a slot formed in a block of material tangential to a borehole through the block; c. rolling the sheet into a tube in the borehole by second air jet means tangential to the borehole; and d. transferring the rolled tube by means causing a pressure differential between the ends of the borehole from the borehole to a hollow cell assembly located outside the borehole and on the axis thereof.
Claim 8
Dependent Claim
28 words
A method for forming a tubular battery separator as define in claim 9 wherein the means causing the pressure differential comprises baffle means covering parts of the borehole.
Claim 9
Dependent Claim
37 words
A method for forming a tubular battery separator as defined in claim 7, wherein the means causing a pressure differential between the ends of the borehole comprises air jet means directed along the axis of the borehole.
References Cited (Backward Citations)
US1791303A
Cited
US1926060A
Cited
US3237536A
Cited
US3337064A
Cited
US3415089A
Cited
US3499072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |