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US3833695A
Expired / Lapsed
US
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Method and apparatus for producing elements by moulding
Assignee: Individual
•
Filing: 1972-03-20
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Granted: 1974-09-03
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Expires: 1992-03-20
Abstract
Abstract THE DISCLOSURE HEREIN DECRIBES A METHOD FOR PRODUCING PANELS BY MOULDING. A POROUS GRID IS INTRODUCED INTO A VERTICAL MOULD CONSISTING OF ENDLESS BELTS MOVING FROM TOP TO BOTTOM OF THE MOULD. AT THE SAME TIME, A FILLER MATERIAL, SUCH AS AN EXPANSIBLE PHENOLIC RESIN IS FED INTO THE MOULD THROUGH POURING HEADS WHICH CARRY OUT A RECIPROCATING MOTION ALONG THE UPPER PART OF THE MOULD, THE PHENOLIC RESIN EXPANDS IN THE GRID, OCCUPYING ALL OF THE PORES OR CELLS THEREIN. THE PANEL OBTAINED MAY BE USED IN BUILDING TO CONSTRUCT WALLS, PARTITIONS, FLOORS, AND CEILINGS.
Inventors
- 👤 P Vidal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:21
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0012; B32; B32B; B32B5/00; B32B5/18; B32B5/20; B21; B21F; B21F27/00; B21F27/12; B21F27/128; B29; B29C; B29C44/00; B29C44/20; B29C44/203; B29C44/32; B29C44/332; B29C63/00; B29C63/02; B29C63/04; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/24; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; B29C2793/00; B29C2793/009; B29L; B29L2007/00; B29L2009/00; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0285; B32B2305/00; B32B2305/08; B32B2305/38; B32B2307/00; B32B2307/50
Claims Analysis
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References Cited (Backward Citations)
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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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |