US3830685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes reinforced by polyvinyl alcohol cord
Assignee: Dayco Products LLC
•
Filing: 1972-04-20
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Granted: 1974-08-20
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Expires: 1992-04-20
Abstract
Abstract A reinforced composition of improved physical properties is obtained by incorporating polyvinyl alcohol cords or fabrics into curable liquid urethane prepolymers. A strong chemical adhesion is obtained between the polyvinyl alcohol and urethane.
Inventors
- 👤 J Haley
- 👤 J Cooper
- 👤 A Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:41
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6212; C08G18/08; C08G18/10; C08L; C08L75/00; C08L75/04; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2738
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
14 words
The composition of claim 1 in which said cord constitutes a continuous reinforcing member.
Claim 2
Dependent Claim
36 words
The composition of claim 1 made in the form of a power transmission belt, said polyurethane material comprising the body of said belt and said polyvinyl alcohol cord forming longitudinally extending strength cords within said body.
Claim 3
Dependent Claim
34 words
The composition of claim 1 made in the form of a snowmobile track, said polyurethane material comprising the body of said track and said polyvinyl alcohol cord forming Reinforcing members embedded within said body.
Claim 4
Dependent Claim
14 words
The composition of claim 4 in which said cord extends longitudinally of said track.
Claim 5
Dependent Claim
15 words
The composition of claim 1 in which said cord is incorporated within a woven fabric.
Claim 6
Dependent Claim
15 words
The composition of claim 1 in which said cord is incorporated within a knitted fabric.
Claim 7
Dependent Claim
15 words
The composition of claim 1 in which said cord is incorporated within a braided fabric.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |