US3626044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing a curved composite foamed panel
Assignee: Individual
•
Filing: 1969-11-10
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Granted: 1971-12-07
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Expires: 1989-11-10
Abstract
Abstract A partition or panel is formed of a plurality of reinforcing elements interlaced with bands of glass cloth and embedded in a polymerized resin foam. The reinforcing elements comprise a core of polymerized resin encased in a layer of glass fabric between a pair of laths. The reinforcing elements can be made with curved shapes by moulding between flat surfaces. The partition can be given a complex curvature by placing the reinforcing elements and interlaced glass cloth in a shuttering composed of a supple plastic sheet outwardly reinforced with laths transverse of the reinforcing elements and pouring an expansible resin foam, thereby eliminating the rigid conventional mould.
Inventors
- 👤 Guy Arnaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:42
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/84; B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1228; B29C44/18; B29C44/182; B29C44/184; E04B2/86; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24636; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249982; Y10T428/249984
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
A process according to claim 1, in which said bars are formed by the steps of: a. laying out the desired shape of a bar on a first supporting surface nonadherent to foamable polymeric resin, b. fixing spaced strips on said surface in conformity with the desired shape of said bar, c. introducing a foamable polymerizable thermosetting polymeric resin into the space between said strips, d. covering said space with a surface nonadherent to said resin to thereby enclose said space, e. expanding and polymerizing said resin to fill said space and thereby form a bar having a size and shape defined by said surfaces and said strips and, f. removing said strips and polymerized resin foam from said surfaces.
Claim 2
Dependent Claim
24 words
A process according to claim 2, in which said polymerized resin foam bonds to said strips which thereby constitute reinforcing elements of said bar.
Claim 3
Dependent Claim
32 words
A process according to claim 2, in which glass mat is placed between said surfaces and said foam, said foam bonding to said glass mat which thereby constitutes reinforcement of said bar.
Claim 4
Dependent Claim
32 words
A process according to claim 1, in which said strand material which is interwoven with said bars comprises strips of glass fiber fabric, alternate strips passing on opposite sides of respective bars.
Claim 5
Dependent Claim
22 words
A process according to claim 1, in which the supporting of said flexible thermoplastic polymer sheets is by a plurality of battens.
Claim 6
Dependent Claim
28 words
A process according to claim 6, in which said battens are spaced from one another, thereby permitting said sheet to bow out to some extent between successive battens.
Claim 7
Dependent Claim
16 words
A process according to claim 6, in which said battens are placed transversely of said bars.
Claim 8
Dependent Claim
35 words
A process according to claim 1, in which said sheets are applied section by section, said foamable polymerizable thermosetting polymeric resin being introduced into one section before the sheets of the next section are placed.
Claim 9
Dependent Claim
16 words
A process according to claim 1, in which said foamable polymerizable thermosetting polymeric resin is polyurethane.
References Cited (Backward Citations)
US3111569A
Cited
US3289703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |