US3728424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making flat cables
Assignee: International Business Machines Corp
•
Filing: 1970-08-19
•
Granted: 1973-04-17
•
Expires: 1990-08-19
Abstract
Abstract Method of making flat cables with plastics by extrusion. For cooling, at least two cooling zones are provided. The width of the flat cable is adjusted by setting the temperature difference of the cooling zone, in which the cable sets, and of the preceding cooling zone.
Inventors
- 👤 R Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:13
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/14; B; B29; B29C; B29C48/00; B29C48/15; B29C48/156; H01B1/00; H01B7/00; H01B7/08; H01B7/0823; B29C48/03; B29C48/07; B29C48/08; B29C48/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
26 words
A method in accordance with claim 1 in which said cable width is increased by decreasing said temperature difference and decreased by increasing said temperature difference.
Claim 2
Dependent Claim
70 words
A method in accordance with claim 1 which further comprises passing said cable through a third cooling zone for cooling the flat cable to a final temperature approaching an external temperature; determining the width of said cable at said final temperature of said cable; and regulating the temperature differential of said plastic material in said first zone and the temperature of said second zone in response to said width determination.
Claim 3
Dependent Claim
35 words
A method in accordance with claim 1 in which said plastic material is selected from the class of materials comprising polyethylene, polypropylene, copolymerizates of polyethylEne and polypropylene, polyvinyl chloride, silicone rubber, or fluorinated ethylene propylene.
Claim 4
Dependent Claim
15 words
A method in accordance with claim 1 in which said plastic material is non-crosslinked polyethylene.
Claim 5
Dependent Claim
64 words
A method of making flat cables in accordance with claim 1 in which said control of said width dimension of said cable includes determining the width of said cable following cooling of said cable in said second zone; and regulating the temperature differential of said plastic material in said first zone and the temperature of said second zone in response to said width determination.
References Cited (Backward Citations)
US2369858A
Cited
US3082292A
Cited
DE1113728B
Cited
US3288895A
Cited
US3300554A
Cited
US3295163A
Cited
GB1137626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |