Patent US5151277A successfully refreshed from Google Patents.
US5151277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reconfigurable fiber-forming resin transfer system
Assignee: Charles Stark Draper Laboratory Inc
•
Filing: 1991-03-27
•
Granted: 1992-09-29
•
Expires: 2011-03-27
Abstract
Abstract A reconfigurable fiber-forming resin transfer molding system including a sealed chamber with first and second spaced flexible diaphragms for holding a fiber workpiece and press and die mold surfaces for forming the fiber workpiece.
Inventors
- 👤 Edward Bernardon
- 👤 Michael F. Foley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:15
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/18; B29C51/20; B29C33/00; B29C33/30; B29C33/301; B29C33/302; B29C51/08; B29C51/082; B29C51/087; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/44; B29C70/443; B29C43/00; B29C43/02; B29C43/10; B29C43/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
A reconfigurable fiber-forming resin transfer molding system comprising: a chamber including opposing flexible first and second spaced diaphragms, means for sealingly engaging the edges of the diaphragms, means for disposing an initially generally planar fiber workpiece between the diaphragms dividing the chamber into two sections, and means for introducing into at least one section a resin for impregnating said workpiece; and press and die means surrounding said chamber for embracing said chamber and forming a contained workpiece to conform to the shape of the press and die.
Claim 2
Dependent Claim
87 words
A reconfigurable fiber-forming resin transfer molding system comprising: a chamber including opposing flexible first and second spaced diaphragms, means for sealingly engaging the edges of the diaphragms, means for disposing an initially generally planar fiber workpiece between the diaphragms dividing the chamber into two sections, and means for introducing into at least one section a resin for impregnating said workpiece; and press and die means surrounding said chamber for embracing said chamber and forming a contained workpiece to conform to the shape of the press and die.
Claim 3
Dependent Claim
35 words
The reconfigurable fiber-forming resin transfer molding system of claim 1 in which said means for sealingly engaging includes a first frame for mounting said first diaphragm and a second frame for mounting said second diaphragm.
Claim 4
Dependent Claim
25 words
The reconfigurable fiber-forming resin transfer molding system of claim 2 in which said means for sealingly engaging further includes a peripheral seal between said frames.
Claim 5
Dependent Claim
26 words
The reconfigurable fiber-forming resin transfer molding system of claim 1 in which said chamber further includes clamping means for tensioning said fabric workpiece in said chamber.
Claim 6
Dependent Claim
39 words
The reconfigurable fiber-forming resin transfer molding system of claim 1 in which said press and die means includes a reconfigurable press and die apparatus, at least one of said press and die including a plurality of mold surface segments.
Claim 7
Dependent Claim
31 words
The reconfigurable fiber-forming resin transfer molding system of claim 5 in which said Press and die means includes means for individually and selectively actuating said segments to configure a predetermined shape.
Claim 8
Dependent Claim
31 words
The reconfigurable fiber-forming resin transfer molding system of claim 5 in which both the press and die portion of said press and die apparatus include a plurality of mold surface segments.
Claim 9
Dependent Claim
31 words
The reconfigurable fiber-forming resin transfer molding system of claim 7 in which said press and die means includes means for individually and selectively actuating said segments to configure a predetermined shape.
References Cited (Backward Citations)
US3596869A
Cited
JPS62142628A
Cited
US4731144A
Cited
US4808362A
Cited
US5108532A
Cited
US4890235A
Cited
US5032206A
Cited
US4943222A
Cited
US4946640A
Cited
US5037599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |