US3932969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrocement structures and method
Assignee: Individual
•
Filing: 1974-08-19
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Granted: 1976-01-20
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Expires: 1994-08-19
Abstract
Abstract Ferrocement structures and the method for producing them comprising: providing a load-bearing framework, covering the framework with a strong flexible sheet-like material and then a flexible metal reinforcing material, and applying cement mortar thereover to cover the reinforcing material. The framework can be made of easily fabricated wooden ribs.
Inventors
- 👤 Thad E. Matras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:46
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/08; E04B1/00; E04B1/16; E04B1/166
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
An enclosure comprising: a. a load-bearing framework defining the shape of said enclosure, at least a portion of said framework having a convex configuration; b. at least one layer of moisture-impermeable flexible sheet-like material having an inside surface and an outside surface disposed over and supported by said framework, portions of said inside surface being in contact with said framework; and c. a layer of cured cement mortar having reinforcing means therein disposed over and in contact with the outside surface of said sheet-like material, said reinforcing means comprising at least two layers of wire mesh embedded in said cement.
Claim 2
Dependent Claim
100 words
An enclosure comprising: a. a load-bearing framework defining the shape of said enclosure, at least a portion of said framework having a convex configuration; b. at least one layer of moisture-impermeable flexible sheet-like material having an inside surface and an outside surface disposed over and supported by said framework, portions of said inside surface being in contact with said framework; and c. a layer of cured cement mortar having reinforcing means therein disposed over and in contact with the outside surface of said sheet-like material, said reinforcing means comprising at least two layers of wire mesh embedded in said cement.
Claim 3
Dependent Claim
20 words
An enclosure in accordance with claim 1 wherein said layer of cured cement mortar is less than three-fourths inch thick.
Claim 4
Dependent Claim
44 words
An enclosure in accordance with claim 1 wherein the said framework is at least in part constructed from arc shaped ribs, said ribs comprising lengths of lumber joined together at their end portions so that such lengths follow approximately the shape of said arc.
Claim 5
Dependent Claim
77 words
An enclosure in accordance with claim 1 wherein said framework includes a plurality of arc shaped ribs, said ribs comprising lengths of lumber joined together at their end portions so that such lengths follow approximately the shape of said arc and wherein each length of lumber in an individual rib forms a bridge between the preceding and succeeding length so that the total width of said individual rib does not exceed twice the thickness of said lumber.
Claim 6
Dependent Claim
46 words
An enclosure in accordance with claim 4 wherein each joint is secured by at least two bolts such that when all but one of said bolts is removed from each joint said rib is foldable at each such joint using the single bolt as a pivot.
Claim 7
Dependent Claim
61 words
An enclosure in accordance with claim 1 wherein said framework comprises a plurality of rib structures as defined in claim 4 and wherein said rib structures are joined together by horizontally disposed wooden stringers fastened into notches in the outer edge of said ribs so that the outside edges of said ribs and said stringers define the shape of said enclosure.
Claim 8
Independent Claim
169 words
A method for constructing an enclosure which comprises the steps of: a. providing a load-bearing framework defining the shape of said enclosure, at least a portion of said framework having a convex configuration; b. applying over said framework at least one layer of flexible sheet-like material having an inside surface and an outside surface so that portions of said inside surface are in contact with said framework and said sheet-like material conforms to the shape of said framework, said sheet-like material having sufficient tear strength and impermeability to moisture to support the cement mortar mixture applied in step (d) hereinbelow; c. applying over the outside surface of said flexible sheet-like material at least two layers of flexible wire mesh which conforms to the shape of said sheet-like material and said framework; and d. applying over said sheet-like material and over and around said wire mesh a wet cement mortar mixture in sufficient quantity to provide a substantially void-free layer of wet cement mortar which completely covers said wire mesh.
Claim 9
Independent Claim
169 words
A method for constructing an enclosure which comprises the steps of: a. providing a load-bearing framework defining the shape of said enclosure, at least a portion of said framework having a convex configuration; b. applying over said framework at least one layer of flexible sheet-like material having an inside surface and an outside surface so that portions of said inside surface are in contact with said framework and said sheet-like material conforms to the shape of said framework, said sheet-like material having sufficient tear strength and impermeability to moisture to support the cement mortar mixture applied in step (d) hereinbelow; c. applying over the outside surface of said flexible sheet-like material at least two layers of flexible wire mesh which conforms to the shape of said sheet-like material and said framework; and d. applying over said sheet-like material and over and around said wire mesh a wet cement mortar mixture in sufficient quantity to provide a substantially void-free layer of wet cement mortar which completely covers said wire mesh.
Claim 10
Dependent Claim
18 words
The method in accordance with claim 7 wherein at least four layers of said wire mesh are applied.
Claim 11
Dependent Claim
112 words
The method in accordance with claim 8 wherein said sheet-lie material and said wire mesh are applied alternately by the steps of: disposing a swatch of said sheet-like material over said framework at a relatively elevated portion thereof, applying one or more layers of said wire mesh over said swatch of sheet-like material, applying additional swatches of sheet-like material adjacent to and overlapping the said first swatch, applying over said additional swatches of sheet-like material one or more layers of wire mesh overlapping the wire mesh covering said first swatch, and continuing in like manner until said entire enclosure is covered by said overlapping swatches of sheet-like material and overlapping wire mesh.
Claim 12
Dependent Claim
69 words
A method for constructing an enclosure as claimed in claim 7 wherein a load-bearing framework is provided which comprises a plurality of rib structures as defined in claim 4 and wherein said rib structures are joined together by horizontally disposed wooden stringers fastened into notches in the outer edge of said ribs so that the outside edges of said ribs and said stringers define the shape of said enclosure.
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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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |