Patent US3882215A successfully refreshed from Google Patents.
US3882215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making building and like components
Assignee: ARYAN GROUP Ltd
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Filing: 1972-06-23
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Granted: 1975-05-06
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Expires: 1992-06-23
Abstract
Abstract A method of molding a component by preparing a low viscosity mix of polyester resin and, adding a relatively coarse filler material, so that the filler material will settle on standing. A quantity of the mix is poured into a mould, allowed to settle into a lower, heavily filled, resin layer and an upper, fillerfree, resin layer. Glass fibre reinforcement which is permeable to the upper layer and impervious to the lower layer is applied to the upper layer which, being filler-free, wets out and easily permeates the reinforcement. The required thickness of the component is built up by adding alternately further mix and further reinforcement.
Inventors
- 👤 Edward Dyke
- 👤 George Harold Farringdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:10
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/003; B29K; B29K2309/00; B29K2309/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
160 words
A METHOD OF MANUFACTURING A REINFORCED POLYESTER RESINFILLED COMPONENT, COMPRISING: A. FORMING A MIXTURE OF A CURABLE LIQUID POLYESTER RESIN, A MONOMER OF A THERMOPLASTIC SYNTHETIC RESIN, A CATALYST FOR SAID POLYMER, AND AN INERT PARTICULATE FILLER MATERIAL, SAID FILLER PARTICLES BEING CAPABLE OF SETTLING IN SAID LIQUID RESIN AS A LOWER LAYER CONTAINING THE MAJOR PART OF SAID FILLER PARTICLES AND AN UPPER LAYER CONTAINING A MINOR PART OF SAID FILLER PARTICLES, B. POURING A PORTION OF SAID MIXTURE INTO A MOLD OF SAID COMPONENT, C. ALLOWING SAID FILLER PARTICLES TO SETTLE INTO SAID LOWER AND UPPER LAYERS, D. PLACING A FIRST REINFORCING STRATUM OF GLASS FIBER ON SAID RESIN UPPER LAYER IN WHICH SAID STRATUM IS PERMEABLE IS IMPREGNATED THEREWITH, AND IS ALLOWED TO SINK AND REST UPON SAID FILLER LOWER LAYER TO WHICH SAID STRATUM IS IMPERVIOUS, E. POURING A SECOND PORTION OF SAID MIXTURE AS IN STEP (A) INTO SAID MOLD OVER SAID FIRST REINFORCING STRATUM,
Claim 2
Independent Claim
160 words
A METHOD OF MANUFACTURING A REINFORCED POLYESTER RESINFILLED COMPONENT, COMPRISING: A. FORMING A MIXTURE OF A CURABLE LIQUID POLYESTER RESIN, A MONOMER OF A THERMOPLASTIC SYNTHETIC RESIN, A CATALYST FOR SAID POLYMER, AND AN INERT PARTICULATE FILLER MATERIAL, SAID FILLER PARTICLES BEING CAPABLE OF SETTLING IN SAID LIQUID RESIN AS A LOWER LAYER CONTAINING THE MAJOR PART OF SAID FILLER PARTICLES AND AN UPPER LAYER CONTAINING A MINOR PART OF SAID FILLER PARTICLES, B. POURING A PORTION OF SAID MIXTURE INTO A MOLD OF SAID COMPONENT, C. ALLOWING SAID FILLER PARTICLES TO SETTLE INTO SAID LOWER AND UPPER LAYERS, D. PLACING A FIRST REINFORCING STRATUM OF GLASS FIBER ON SAID RESIN UPPER LAYER IN WHICH SAID STRATUM IS PERMEABLE IS IMPREGNATED THEREWITH, AND IS ALLOWED TO SINK AND REST UPON SAID FILLER LOWER LAYER TO WHICH SAID STRATUM IS IMPERVIOUS, E. POURING A SECOND PORTION OF SAID MIXTURE AS IN STEP (A) INTO SAID MOLD OVER SAID FIRST REINFORCING STRATUM,
Claim 3
Dependent Claim
44 words
A method according to claim 1, in which said filler material comprises a major portion of a relatively course granular material of up to 90 mesh; and a minor portion of a smaller mesh material which remains in said upper layer of said mixture.
Claim 4
Dependent Claim
25 words
A method according to claim 1, in which said polyester resin, before addition of said filler material, has a viscosity of 1 to 2 poises.
Claim 5
Dependent Claim
21 words
A method according to claim 3, in which said mixture is given the required viscosity by the addition of further monomer.
Claim 6
Dependent Claim
23 words
A method according to claim 1, in which each of said stratum of glass fiber material is constituted by a glass fiber mat.
Claim 7
Dependent Claim
53 words
A method according to claim 1, including the further step of: superposing a layer of thermal insulating material on the last said glass fiber stratum introduced in said mold prior to said curing, whereby said layer of thermal insulating material is contacted with said resin mixture permeating said last stratum, and bonded thereto.
Claim 8
Dependent Claim
31 words
A method according to claim 6, in which said layer of thermal insulating material has dimensions slightly less than said mold whereby the sides are contacted with said permeated resin mixture.
Claim 9
Dependent Claim
38 words
A method according to claim 1, including the further step of: superposing a finishing particulate material on the last said glass fiber stratum introduced in said mold, said finishing particulate material being bonded to said glass fiber stratum.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |