US3904458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining continuous strands
Assignee: Imperial Chemical Industries Ltd
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Filing: 1972-10-25
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Granted: 1975-09-09
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Expires: 1992-10-25
Abstract
Abstract The present invention is directed to a method of forming a joint between end portions of two continuous strands, for example, synthetic filament yarns, that are arranged in overlapping engagement by bonding the end portions together with an adhesive material and shrinking a sheath that is formed solely by wrapping a tie-yarn of heat shrinkable material around the ends of the two strands.
Inventors
- 👤 Raymond Patrick Wray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:19
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/69; B29C65/00; B29C65/66; B29C65/68; B65; B65H; B65H69/00; B65H69/02; B65H69/06; B65H69/068; B29C66/70; B29C66/71; B65H2701/00; B65H2701/30; B65H2701/31; B65H2701/312
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
61 words
A METHOD OF FORMING A JOINT BETWEEN THE END PORTIONS OF TWO CONTINUOUS STRANDS COMPRISING THE STEPS OF ARRANGING THE END PORTIONS IN OVERLAPPING ENGAGEMENT, APPLYING AN ADHESIVE ONLY TO THE END PORTIONS TO BOND THE END PORTIONS TOGETHER, WRAPPING A HEAT-SHRINKABLE TIE-YARN IN SPIRAL FORM AROUND THE BONDED END PORTIONS AND SHRINKING THE WRAPPED TIE-YARN AROUND THE BONDED END PORTIONS.
Claim 2
Independent Claim
61 words
A METHOD OF FORMING A JOINT BETWEEN THE END PORTIONS OF TWO CONTINUOUS STRANDS COMPRISING THE STEPS OF ARRANGING THE END PORTIONS IN OVERLAPPING ENGAGEMENT, APPLYING AN ADHESIVE ONLY TO THE END PORTIONS TO BOND THE END PORTIONS TOGETHER, WRAPPING A HEAT-SHRINKABLE TIE-YARN IN SPIRAL FORM AROUND THE BONDED END PORTIONS AND SHRINKING THE WRAPPED TIE-YARN AROUND THE BONDED END PORTIONS.
Claim 3
Dependent Claim
91 words
A method of forming a joint as claimed in claim 1, including bringing an end portion of one strand into overlapping engagement with an end portion of the other strand, coating the engaging end portions with a solution of a polymeric adhesive, capable of adhering to the strands, in a solvent therefor which is not a solvent for the material of the strands, removing the solvent from the polymeric adhesive to form a bond between the engaging end portions of the strands, and then carrying out the wrapping and shrinking steps.
Claim 4
Dependent Claim
90 words
A method of forming a joint as claimed in claim 1, including bringing an end portion of one strand into overlapping engagement with an end portion of the other strand, coating the engaging end portions with a solution of a polymeric adhesive, capable of adhering to the strands, in a solvent therefor which is not a solvent for the material of the strands, carrying out the wrapping step, removing the solvent from the polymeric adhesive to form a bond between the engaging end portions and simultaneously shrinking the wrapped tie-yarn.
Claim 5
Dependent Claim
25 words
A method of forming a joint as claimed in claim 1 wherein a heat treatment is used to remove the solvent and shrink the tie-yarn.
Claim 6
Dependent Claim
30 words
A method of forming a joint as claimed in claim 4 wherein the heat treatment utilises a stream of hot air at a temperature in the range 80*C. to 230*C.
Claim 7
Dependent Claim
18 words
A method of forming a joint as claimed in claim 1 wherein the tie-yarn is a shrinkable monofilament.
Claim 8
Dependent Claim
24 words
A method of forming a joint as claimed in claim 1 wherein the tie-yarn has a shrinkage greater than 6%, in air at 150*C.
Claim 9
Dependent Claim
29 words
A method of forming a joint as claimed in claim 1 wherein each strand is composeD of a single monofilament having a denier in the range 100 to 1,500.
Claim 10
Dependent Claim
18 words
A method of making a joint as claimed in claim 1 wherein the strands are formed of glass.
Claim 11
Dependent Claim
15 words
A method as in claim 1 wherein the tie-yarn is a low denier multifilament yarn.
Claim 12
Dependent Claim
26 words
A method as in claim 1 wherein each strand is composed of a yarn made from monofilaments having a denier in the range 100 to 500.
Claim 13
Dependent Claim
23 words
A method as in claim 1 wherein the strands are formed of a material selected from the group consisting of polyester and polyamide.
References Cited (Backward Citations)
US2577466A
Cited
US2808356A
Cited
US2974559A
Cited
US3012398A
Cited
US2953418A
Cited
US3070947A
Cited
US3198059A
Cited
US3466210A
Cited
US3400481A
Cited
US3526085A
Cited
US3674581A
Cited
US3634972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |