US4071184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact resistant blade
Assignee: General Electric Co
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Filing: 1976-08-02
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Granted: 1978-01-31
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Expires: 1996-08-02
Abstract
Abstract A blade fabricated of a plurality of bonded filament laminates, at least one of the laminates characterized by a plurality of continuous, collimated filaments embedded in a different matrix at the blade tip than at the blade root. The matrices are characterized by different relative impact strengths.
Inventors
- 👤 Robert G. Carlson
- 👤 Robert W. Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:21
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/282; B; B23; B23P; B23P15/00; B23P15/04; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49337
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
In a method of fabricating a filament laminate for use in a composite article, the steps of: bonding a plurality of collimated filaments between two sheets of a first material; removing a portion of at least one sheet from the laminate; replacing said removed portion with a second material characterized by an impact strength different from that of said removed portion; and bonding said second material to said first material.
Claim 2
Dependent Claim
70 words
In a method of fabricating a filament laminate for use in a composite article, the steps of: bonding a plurality of collimated filaments between two sheets of a first material; removing a portion of at least one sheet from the laminate; replacing said removed portion with a second material characterized by an impact strength different from that of said removed portion; and bonding said second material to said first material.
Claim 3
Dependent Claim
61 words
In a method of fabricating a filament laminate for use in a composite article, the steps of: bonding a plurality of collimated filaments between two sheets of materials; removing a portion of at least one sheet from the laminate; replacing said removed portion with the same material as comprises the other sheet; and bonding said replacing material to the remaining material.
Claim 4
Dependent Claim
61 words
In a method of fabricating a filament laminate for use in a composite article, the steps of: bonding a plurality of collimated filaments between two sheets of materials; removing a portion of at least one sheet from the laminate; replacing said removed portion with the same material as comprises the other sheet; and bonding said replacing material to the remaining material.
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) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |