US4136686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthopedic device
Assignee: Yardney Co
•
Filing: 1977-01-12
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Granted: 1979-01-30
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Expires: 1997-01-12
Abstract
Abstract An orthopedic device comprising a plastic sheet member having one side covered with a thin protective layer which is substantially thinner than said plastic sheet member and the other side covered with an insulating layer, e.g., fabric or foam. The plastic sheet member has a tensile strength of at least 2,000 psi. The orthopedic device is formable at temperatures above about 120° F.
Inventors
- 👤 Elmer M. Arluck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:16
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/04; A61F5/00; A61F5/01; A61F5/0102; A61F5/0104; A61F5/0118; A61L; A61L15/00; A61L15/07; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
154 words
A method of making a shaped device comprising the steps of: heating a flat sheet consisting of a plastic sheet member of a thickness of 50 to 120 mils, a flexural strength of 3,000 to 14,000 psi, a flexural modulus of 0.5 × 10 5 to 7 × 10 5 psi and a Vicat softening point of 60° C to 80° C, an insulating layer having a thickness of at least 10 mils and a coefficient of heat transfer below 2 cal/sec/cm 2 /°C × 10 -4 on one side of said sheet member, and a protective layer on the other side thereof to a temperature of 120° F to 400° F by subjecting said sheet to a source of heat at said protective layer; removing said source of heat; shaping the heated flat sheet to the contours of a contoured shaping part in contact with said insulating layer; and cooling the shaped sheet.
Claim 2
Independent Claim
154 words
A method of making a shaped device comprising the steps of: heating a flat sheet consisting of a plastic sheet member of a thickness of 50 to 120 mils, a flexural strength of 3,000 to 14,000 psi, a flexural modulus of 0.5 × 10 5 to 7 × 10 5 psi and a Vicat softening point of 60° C to 80° C, an insulating layer having a thickness of at least 10 mils and a coefficient of heat transfer below 2 cal/sec/cm 2 /°C × 10 -4 on one side of said sheet member, and a protective layer on the other side thereof to a temperature of 120° F to 400° F by subjecting said sheet to a source of heat at said protective layer; removing said source of heat; shaping the heated flat sheet to the contours of a contoured shaping part in contact with said insulating layer; and cooling the shaped sheet.
Claim 3
Dependent Claim
14 words
The method defined in claim 1 wherein said temperature is above about 160° F.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |