Patent US3901696A successfully refreshed from Google Patents.
Patent US4774954A successfully refreshed from Google Patents.
US4774954A
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Composite orthotic material and method
Assignee: Individual
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Filing: 1987-02-09
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Granted: 1988-10-04
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Expires: 2007-02-09
Abstract
Abstract A hybrid composite material is constructed from woven reinforced fabrics of Kevlar 49 and biaxially reinforced fibers of graphite and E-Glass bonded together with a thermosetting adhesive, for the application of custom orthotics. The material is designed with the idea of introducing different fibers at different locations of the orthotic in order to take advantage of the unique properties of each reinforcing fibers. The resulting material creates a hybrid composite that exhibits a balance of properties, in both the longitudinal and tranverse directions, unavailable with any single reinforcing fibers. A method of orthotic manufacturing involves a hand lay-up and forming procedure. The constructed composite material is formed and pressed on a prescribed cast, then allowed to cure under pressure. The post-cured material is stripped from the cast, then cut and ground and finally finished to the required orthotic. The produced orthotic combines the desired feature of a thin section with excellent combination of properties relevant to custom orthotics. Such properties include light weight, high strength and modulus, excellent resistance to impact, fatigue, and creep, and outstanding ability to damp vibrations.
Inventors
- 👤 Nabil A. Ibrahim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:45
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/12; B29D35/14; B29D35/142; A; A43; A43B; A43B17/00; A43B17/14; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/22; B29C70/228; B29C2793/00; B29C2793/009; B29C70/28; B29C70/30; B29K; B29K2277/00; B29K2307/00; B29K2309/00; B29K2309/08; B29L; B29L2031/00; B29L2031/48; B29L2031/50; B29L2031/507
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
90 words
A composite orthotic material of layers of woven fabric and biaxially reinforced fabrics, said material having a first and a second side and having a longitudinal and a transverse axis, one of said layers being on the first side and including a first type of fiber extending coaxially with both the longitudinal and transverse axes and another of said layers being on the second side and including a second type of fiber, extending coaxially with the longitudinal axis, and a third type of fiber extending coaxially with the transverse axis.
Claim 2
Dependent Claim
90 words
A composite orthotic material of layers of woven fabric and biaxially reinforced fabrics, said material having a first and a second side and having a longitudinal and a transverse axis, one of said layers being on the first side and including a first type of fiber extending coaxially with both the longitudinal and transverse axes and another of said layers being on the second side and including a second type of fiber, extending coaxially with the longitudinal axis, and a third type of fiber extending coaxially with the transverse axis.
Claim 3
Dependent Claim
15 words
The material of claim 1 wherein said layers are bonded together with a thermosetting adhesive.
Claim 4
Dependent Claim
14 words
The material of claim 2 wherein said first type of fiber comprises Kevlar 49.
Claim 5
Dependent Claim
16 words
The material of claim 3 wherein said second type of fiber comprises either graphite or Kevlar.
Claim 6
Dependent Claim
13 words
The material of claim 4 wherein said third type of fiber comprises E-Glass.
Claim 7
Dependent Claim
14 words
The material of claim 1 wherein said first type of fiber comprises Kevlar 49.
Claim 8
Dependent Claim
16 words
The material of claim 6 wherein said second type of fiber comprises either graphite or Kevlar.
Claim 9
Dependent Claim
13 words
The material of claim 7 wherein said third type of fiber comprises E-Glass.
Claim 10
Dependent Claim
102 words
A composite orthotic material of layers of woven fabric and biaxially reinforced fabrics, said material having a first layer forming a first side thereof, a second layer forming a second side thereof, and a third layer between said first and second layers, said layers each having a longitudinal and a transverse axis, said first layer including a first type of fiber extending coaxially with both the longitudinal and transverse axes, said second and third layers each having a second type of fiber extending coaxially with the longitudinal axis, biaxially reinforced with a third type of fiber extending coaxially with the transverse axis.
Claim 11
Dependent Claim
102 words
A composite orthotic material of layers of woven fabric and biaxially reinforced fabrics, said material having a first layer forming a first side thereof, a second layer forming a second side thereof, and a third layer between said first and second layers, said layers each having a longitudinal and a transverse axis, said first layer including a first type of fiber extending coaxially with both the longitudinal and transverse axes, said second and third layers each having a second type of fiber extending coaxially with the longitudinal axis, biaxially reinforced with a third type of fiber extending coaxially with the transverse axis.
Claim 12
Dependent Claim
15 words
The material of claim 9 wherein said layers are bonded together with a thermosetting adhesive.
Claim 13
Dependent Claim
35 words
The material of claim 10 wherein said second type of fiber of said second layer is adjacent said second side and said third type of fiber of said second layer is adjacent said third layer.
Claim 14
Dependent Claim
35 words
The material of claim 11 wherein said second type of fiber of said third layer is adjacent said second layer and said third type of fiber of said third layer is adjacent with first layer.
Claim 15
Dependent Claim
120 words
An orthotic device formed of a multi-layered composite material in the shape of a prescribed foot casting, said device to be used within an associated shoe and having a foot side and a shoe side, comprising: a first layer forming said shoe side; a second layer forming said foot side; a third layer between said first and second layers; said layers each having a longitudinal and a transverse axis; said first layer including a first type of woven fiber extending coaxially with both the longitudinal and transverse axes; said second and third layers each having a second type of fiber extending coaxially with the longitudinal axis biaxially reinforced with a third type of fiber extending coaxially with the transverse axis.
Claim 16
Dependent Claim
120 words
An orthotic device formed of a multi-layered composite material in the shape of a prescribed foot casting, said device to be used within an associated shoe and having a foot side and a shoe side, comprising: a first layer forming said shoe side; a second layer forming said foot side; a third layer between said first and second layers; said layers each having a longitudinal and a transverse axis; said first layer including a first type of woven fiber extending coaxially with both the longitudinal and transverse axes; said second and third layers each having a second type of fiber extending coaxially with the longitudinal axis biaxially reinforced with a third type of fiber extending coaxially with the transverse axis.
Claim 17
Dependent Claim
15 words
The device of claim 13 wherein the layers are bonded together with a thermosetting adhesive.
Claim 18
Dependent Claim
35 words
The device of claim 14 wherein said second type of fiber of said second layer is adjacent said foot side and said third type of fiber of said second layer is adjacent said third layer.
Claim 19
Dependent Claim
35 words
The material of claim 15 wherein said second type of fiber of said third layer is adjacent said second layer and said third type of fiber of said third layer is adjacent said first layer.
Claim 20
Dependent Claim
14 words
The material of claim 13 wherein said first type of fiber comprises Kevlar 49.
Claim 21
Dependent Claim
16 words
The material of claim 17 wherein said second type of fiber comprises either graphite or Kevlar.
Claim 22
Dependent Claim
13 words
The material of claim 18 wherein said third type of fiber comprises E-Glass
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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) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |