US3755059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High impact strength in graphite fiber laminates
Assignee: Monsanto Co
•
Filing: 1971-04-26
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Granted: 1973-08-28
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Expires: 1991-04-26
Abstract
Abstract A laminar composite of high impact and shearing resistance comprises layers of graphite fiber, glass fiber, and corrugated metal foil in an arrangement which resists spalling, interlaminar shearing, and multipoint failure due to shock wave transmission.
Inventors
- 👤 J Calfee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:09
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/14; C; C22; C22C; C22C47/00; B32B15/18; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B2262/00; B32B2262/10; B32B2262/101; B32B2262/106; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24727; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2944; Y10T442/00; Y10T442/60; Y10T442/654; Y10T442/656
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
16 words
The laminate of claim 1 wherein the corrugated metal foil layers interleave the graphite fiber layers.
Claim 2
Dependent Claim
20 words
The laminate of claim 2 wherein the corrugations of the metal foil are parallel to the adjacent graphite fiber layers.
Claim 3
Dependent Claim
14 words
The laminate of claim 3 wherein glass fiber layers sandwich the graphite fiber layers.
Claim 4
Dependent Claim
25 words
The laminate of claim 3 wherein the corrugated metal foil layers are selected from a group consisting of aluminum, beryllium, magnesium, nickel, steel, and titanium.
Claim 5
Dependent Claim
31 words
The laminate of claim 1 including at least one layer of glass fiber located on the reverse impact side of said laminate and exterior to all of said graphite fiber layers.
Claim 6
Dependent Claim
13 words
The laminate of claim 6 wherein glass cloth comprise the glass fiber layers.
Claim 7
Dependent Claim
12 words
The laminate of claim 7 where the corrugated metal foil is steel.
References Cited (Backward Citations)
US3649435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |