US3842583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn and inflatable bag made therefrom
Assignee: EIDP Inc
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Filing: 1972-06-30
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Granted: 1974-10-22
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Expires: 1992-06-30
Abstract
Abstract A high elongation yarn made of poly(hexamethylene adipamide) filaments having specific values of toughness, tenacity, initial modulus and elongation are prepared by drawing spun yarn at a draw ratio of between 2.8 X and 3.8 X . The yarns are useful in preparing woven fabric for use in making rapidly inflatable passive restraint air bags.
Inventors
- 👤 T Gage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:43
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/23; B60R21/235; D; D02; D02G; D02G3/00; D02G3/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
A SYNTHETIC, MULTIFILAMENT, CONTINUOUS FILAMENT YARN OF POLY(HEXAMETHYLENE ADIPAMIDE ) HAVING A. A TOUGHNESS OF AT LEAST 1.5 GM. CM./DEN. CM., B. A TENACITY OF A LEAST 4.0 GM./DEN. (GPD), C. AN INITIAL MODULUS OF LESS THAN 25 GPD, AND D. AN ELONGATION (AT BREAK) OF AT LEAST 45 PERCENT.
Claim 2
Dependent Claim
50 words
A SYNTHETIC, MULTIFILAMENT, CONTINUOUS FILAMENT YARN OF POLY(HEXAMETHYLENE ADIPAMIDE ) HAVING A. A TOUGHNESS OF AT LEAST 1.5 GM. CM./DEN. CM., B. A TENACITY OF A LEAST 4.0 GM./DEN. (GPD), C. AN INITIAL MODULUS OF LESS THAN 25 GPD, AND D. AN ELONGATION (AT BREAK) OF AT LEAST 45 PERCENT.
Claim 3
Dependent Claim
47 words
The yarn of claim 1 wherein the yarn has: a. a toughness of at least 1.8 gm. cm./den. cm., b. a tenacity of at least 4.5 gpd, c. an initial modulus of less than 20 gpd, and d. an elongation (at break) of at least 50 percent.
Claim 4
Dependent Claim
17 words
The yarn of claim 2 wherein the yarn has a denier of between about 100 and 500.
Claim 5
Dependent Claim
12 words
An inflatable bag made of fabric woven from poly(hexamethylene adipamide) yarn having:
Claim 6
Dependent Claim
12 words
An inflatable bag made of fabric woven from poly(hexamethylene adipamide) yarn having:
Claim 7
Dependent Claim
20 words
The bag of claim 4 wherein the air permeability of the fabric is between about 2 and 15 CFM/sq. ft.
Claim 8
Dependent Claim
63 words
9 toughness of at least 1.5 gm. cm./den. cm., b. a tenacity of at least 4.0 gm./den. (gpd), c. an initial modulus of less than 25 gpd, and d. an elongation (at break) of at least 45 percent, said fabric having a higher thread count in the direction of bag deployment during inflation, and a fabric modulus of less than 8 X 8.
Claim 9
Dependent Claim
63 words
9 toughness of at least 1.5 gm. cm./den. cm., b. a tenacity of at least 4.0 gm./den. (gpd), c. an initial modulus of less than 25 gpd, and d. an elongation (at break) of at least 45 percent, said fabric having a higher thread count in the direction of bag deployment during inflation, and a fabric modulus of less than 8 X 8.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |