US4260441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick bond composite and process
Assignee: RTX Corp
•
Filing: 1978-05-10
•
Granted: 1981-04-07
•
Expires: 1998-05-10
Abstract
Abstract A monolayer tape for use in making up a multilayer matrix or composite which is bonded at a high pressure and temperature by pressing the composite between heated platens in air to cause densification, the tape consisting of collimated fibers held together by metal wire woven with and at right angles to the fibers, the wire being the same material as the matrix to become a part thereof when the composite is bonded. The aluminum matrix in which the fibers are embedded is provided by aluminum foils alternating with the collimated fibers in the multilayer matrix.
Inventors
- 👤 Karl M. Prewo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:25
CPC Classifications
C; C22; C22C; C22C47/00; C22C47/02; C22C47/06; C22C47/062; C22C47/066; B; B23; B23K; B23K20/00; B23K20/22; B23K20/233; B23K20/2333; C22C47/20; B23K2103/00; B23K2103/16; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/12; Y10T428/1234; Y10T428/24; Y10T428/24132; Y10T428/24479; Y10T428/24521; Y10T428/24529; Y10T428/24545; Y10T428/24562; Y10T442/00; Y10T442/60; Y10T442/654; Y10T442/656
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
151 words
In the manufacture of a composite structure in air, the structure consisting of an aluminum matrix with a plurality of layers of high strength filaments therein, the steps of: forming a mat consisting of a single layer of collimated spaced uncoated filaments held in mat form only by spaced aluminum crosswires interwoven with said filaments, assembling a plurality of these mats with interleaved aluminum sheets to form a stack, there being one foil sheet between adjacent mats, and densifying and bonding the stack of sheets and mats by heating in air to a temperature nearly the liquidus temperature of aluminum and compressing and compacting the stack to form a composite with the crosswires becoming a part of the aluminum matrix of the foils and with the foils on opposite sides of each tape of fibers brought into contact with one another between the fibers and bonded together to form the matrix.
Claim 2
Dependent Claim
151 words
In the manufacture of a composite structure in air, the structure consisting of an aluminum matrix with a plurality of layers of high strength filaments therein, the steps of: forming a mat consisting of a single layer of collimated spaced uncoated filaments held in mat form only by spaced aluminum crosswires interwoven with said filaments, assembling a plurality of these mats with interleaved aluminum sheets to form a stack, there being one foil sheet between adjacent mats, and densifying and bonding the stack of sheets and mats by heating in air to a temperature nearly the liquidus temperature of aluminum and compressing and compacting the stack to form a composite with the crosswires becoming a part of the aluminum matrix of the foils and with the foils on opposite sides of each tape of fibers brought into contact with one another between the fibers and bonded together to form the matrix.
Claim 3
Dependent Claim
22 words
The process of claim 1 in which the densification and bonding is done by heating and pressing the stack between heated platens.
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) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |