Patent US1769284A successfully refreshed from Google Patents.
Patent US4434119A successfully refreshed from Google Patents.
US4434119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing concrete panels
Assignee: Individual
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Filing: 1981-10-29
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Granted: 1984-02-28
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Expires: 2001-10-29
Abstract
Abstract The invention provides a process for producing fabric-reinforced, thin concrete panels suitable as a backer board for construction materials such as ceramic tile, slate or thin brick. A process is described whereby the components of the panel are deposited on a web of release-agent-treated, water-absorbent paper while moving on a conveyor belt to form a continuous strip, the strip is cut into panels and the wet, uncured panels are stacked by means of an air-float stacking unit, then subsequently cured with the paper web between adjacent panels.
Inventors
- 👤 John W. Teare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:00
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/36; B28B7/364; B28B13/00; B28B13/04; B28B19/00; B28B19/0092; B28B5/00; B28B5/02; B28B5/026; B28B5/027; B65; B65G; B65G57/00; B65G57/02; B65G57/03; B65G57/035; B65G57/04; B65G57/06; Y; Y10; Y10S; Y10S264/00; Y10S264/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A process for producing fabric-reinforced concrete panels which comprises depositing on a moving conveyor belt a web of water-absorbent paper treated with a concrete release agent, depositing on said paper web a continuous strip of uncured, fabric-reinforced concrete, cutting said strip including said paper web into panels, stacking said uncured panels with a layer of said paper web between adjacent panels, curing said stack of panels under non-drying conditions until said panels have hardened, and subsequently subjecting said stack of hardened panels to air drying at ambient conditions whereby moisture from within said stack is dissipated through the wicking action of said layers of paper.
Claim 2
Dependent Claim
105 words
A process for producing fabric-reinforced concrete panels which comprises depositing on a moving conveyor belt a web of water-absorbent paper treated with a concrete release agent, depositing on said paper web a continuous strip of uncured, fabric-reinforced concrete, cutting said strip including said paper web into panels, stacking said uncured panels with a layer of said paper web between adjacent panels, curing said stack of panels under non-drying conditions until said panels have hardened, and subsequently subjecting said stack of hardened panels to air drying at ambient conditions whereby moisture from within said stack is dissipated through the wicking action of said layers of paper.
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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) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |