US5035602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin transfer molding core and preform
Assignee: Ford Motor Co
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Filing: 1990-05-14
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Granted: 1991-07-30
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Expires: 2010-05-14
Abstract
Abstract A resin transfer molding core has an outer surface and internal communication passages. One internal communication passage has an inlet opening and at least one discharge opening extending through the outer surface of the core. At least a second internal communication passage has a discharge opening extending through the outer surface of the core and at least one inlet opening. A preform comprises the core with fiber reinforcement material on the outer surface.
Inventors
- 👤 Carl F. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:08
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/54; B29C33/00; B29C33/76; B29C70/40; B29C70/42; B29C70/46; B29C70/48; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24273; Y10T428/24322
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
108 words
A resin transfer molding core comprising a substantially solid body of polyurethane foam having an outer surface and a plurality of internal communication passages formed by flexible plastic tubes embedded within said core, at least a first of said internal communication passages having an inlet opening at a resin injection port area in the outer surface of said core and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having an inlet opening at said resin injection port area and having at least one discharge opening extending through the outer surface of said core.
Claim 2
Dependent Claim
108 words
A resin transfer molding core comprising a substantially solid body of polyurethane foam having an outer surface and a plurality of internal communication passages formed by flexible plastic tubes embedded within said core, at least a first of said internal communication passages having an inlet opening at a resin injection port area in the outer surface of said core and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having an inlet opening at said resin injection port area and having at least one discharge opening extending through the outer surface of said core.
Claim 3
Dependent Claim
129 words
A resin transfer molding preform for a resin transfer molding process comprising: a core comprising a substantially solid body of polyurethane foam having an outer surface and a plurality of internal communication passages formed by flexible plastic tubes embedded within said core, at least a first of said internal communication passages having an inlet opening at a resin injection port area in the outer surface of said core and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having an inlet opening at said resin injection port area and having at least one discharge opening extending through the outer surface of said core; and fiber reinforcement material affixed to said outer surface of said core.
Claim 4
Dependent Claim
129 words
A resin transfer molding preform for a resin transfer molding process comprising: a core comprising a substantially solid body of polyurethane foam having an outer surface and a plurality of internal communication passages formed by flexible plastic tubes embedded within said core, at least a first of said internal communication passages having an inlet opening at a resin injection port area in the outer surface of said core and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having an inlet opening at said resin injection port area and having at least one discharge opening extending through the outer surface of said core; and fiber reinforcement material affixed to said outer surface of said core.
Claim 5
Dependent Claim
79 words
A resin transfer molding core having an outer surface and comprising a plurality of internal communication passages formed by tubes embedded within the core, at least a first of said internal communication passages having an inlet opening and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having a discharge opening extending through the outer surface of the core and at least one inlet opening.
Claim 6
Dependent Claim
79 words
A resin transfer molding core having an outer surface and comprising a plurality of internal communication passages formed by tubes embedded within the core, at least a first of said internal communication passages having an inlet opening and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having a discharge opening extending through the outer surface of the core and at least one inlet opening.
Claim 7
Dependent Claim
18 words
The resin transfer molding core of claim 3, wherein said core comprises a substantially solid body of foam.
Claim 8
Dependent Claim
15 words
The resin transfer molding core of claim 4, wherein said foam is structural polyurethane foam.
Claim 9
Dependent Claim
14 words
The resin transfer molding core of claim 3, wherein said tubes comprise flexible plastic.
Claim 10
Dependent Claim
102 words
A resin transfer molding preform for a resin transfer molding process, said preform comprising: a core having an outer surface and comprising a plurality of internal communication passages within said core, at least a first of said internal communication passages formed by tubes embedded having an inlet opening and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having a discharge opening extending through said outer surface of the core and at least one inlet opening; and fiber reinforcement material affixed to said outer surface of said core.
Claim 11
Dependent Claim
102 words
A resin transfer molding preform for a resin transfer molding process, said preform comprising: a core having an outer surface and comprising a plurality of internal communication passages within said core, at least a first of said internal communication passages formed by tubes embedded having an inlet opening and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having a discharge opening extending through said outer surface of the core and at least one inlet opening; and fiber reinforcement material affixed to said outer surface of said core.
Claim 12
Dependent Claim
85 words
A resin transfer molding core having an outer surface and comprising a plurality of internal communication passages formed by tubes embedded within the core, at least a first of said internal communication passages having an inlet opening at a resin injection port area in the outer surface of said core and at least a second of said internal communication passages having an inlet opening at said resin injection port area and having at least one discharge opening extending through the outer surface of said core.
Claim 13
Dependent Claim
85 words
A resin transfer molding core having an outer surface and comprising a plurality of internal communication passages formed by tubes embedded within the core, at least a first of said internal communication passages having an inlet opening at a resin injection port area in the outer surface of said core and at least a second of said internal communication passages having an inlet opening at said resin injection port area and having at least one discharge opening extending through the outer surface of said core.
Claim 14
Dependent Claim
18 words
The resin transfer molding core of claim 8 wherein said core comprises a substantially solid body of foam.
Claim 15
Dependent Claim
14 words
The resin transfer molding core of claim 8 wherein said tubes comprise flexible plastic.
Claim 16
Dependent Claim
116 words
A resin transfer molding preform for a resin transfer molding process, said preform comprising: a core having an outer surface and comprising a plurality of internal communication passages within said core, at least a first of said internal communication passages having an inlet opening at a resin injection port area in the outer surface of said core and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having an inlet opening at said resin injection port area and having a discharge opening extending through said outer surface of said core; and fiber reinforcement material affixed to said outer surface of said core.
Claim 17
Dependent Claim
116 words
A resin transfer molding preform for a resin transfer molding process, said preform comprising: a core having an outer surface and comprising a plurality of internal communication passages within said core, at least a first of said internal communication passages having an inlet opening at a resin injection port area in the outer surface of said core and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having an inlet opening at said resin injection port area and having a discharge opening extending through said outer surface of said core; and fiber reinforcement material affixed to said outer surface of said core.
Claim 18
Dependent Claim
28 words
The resin transfer molding preform of claim 11 wherein said resin injection port area is recessed from an immediately adjacent portion of said outer surface of said core.
Claim 19
Dependent Claim
89 words
A resin transfer molding core comprising a substantially solid body of polyurethane foam having an outer surface and comprising a plurality of internal communication passages formed by flexible plastic tubes embedded within the core, at least a first of said internal communication passages having an inlet opening and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having a discharge opening extending through the outer surface of the core and at least one inlet opening.
Claim 20
Dependent Claim
89 words
A resin transfer molding core comprising a substantially solid body of polyurethane foam having an outer surface and comprising a plurality of internal communication passages formed by flexible plastic tubes embedded within the core, at least a first of said internal communication passages having an inlet opening and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having a discharge opening extending through the outer surface of the core and at least one inlet opening.
Claim 21
Dependent Claim
111 words
A resin transfer molding preform for a resin transfer molding process, said preform comprising: a core comprising a substantially solid body of foam having an outer surface and comprising a plurality of internal communication passages formed by flexible plastic tubes embedded within said core, at least a first of said internal communication passages having an inlet opening and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having a discharge opening extending through said outer surface of the core and at least one inlet opening; and fiber reinforcement material affixed to said outer surface of said core.
Claim 22
Dependent Claim
111 words
A resin transfer molding preform for a resin transfer molding process, said preform comprising: a core comprising a substantially solid body of foam having an outer surface and comprising a plurality of internal communication passages formed by flexible plastic tubes embedded within said core, at least a first of said internal communication passages having an inlet opening and at least one discharge opening extending through the outer surface of said core, and at least a second of said internal communication passages having a discharge opening extending through said outer surface of the core and at least one inlet opening; and fiber reinforcement material affixed to said outer surface of said core.
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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) | 1994-07-29 | 1995-01-28 | 1995-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-29 | 1999-01-28 | 1999-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-29 | 2003-01-28 | 2003-07-30 | $7700.00 | Window Closed / Lapsed |