US4414262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped body of a settable mineral material with reinforcement fibers embedded therein
Assignee: Carl Freudenberg KG
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Filing: 1982-07-15
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Granted: 1983-11-08
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Expires: 2002-07-15
Abstract
Abstract The present invention provides for a shaped body comprising a settable mineral material such as cement or gypsum with reinforcement fibers embedded therein. The reinforcement fibers, which are endless and consist of an organic polymer material, are processed as a nonwoven fabric characterized by a parallelized scatter texture.
Inventors
- 👤 Ludwig Hartmann
- 👤 Otto Ambros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:43
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/07; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249922; Y10T428/249924; Y10T428/249932; Y10T428/29; Y10T428/2913; Y10T428/2929
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
85 words
A shaped body comprising a nonwoven fabric of endless reinforcement fibers embedded in an alkaline settable mineral material the endless fibers having no preferred direction or orientation, and said fibers being comprised of a bundle of individual parallel fiber strands, wherein at least one fiber strand at the core of the bundle is protected against chemical interaction with said alkaline settable material by the outermost fiber strands of said bundle which are comprised of a polymeric material which is inert to the alkaline settable material.
Claim 2
Dependent Claim
85 words
A shaped body comprising a nonwoven fabric of endless reinforcement fibers embedded in an alkaline settable mineral material the endless fibers having no preferred direction or orientation, and said fibers being comprised of a bundle of individual parallel fiber strands, wherein at least one fiber strand at the core of the bundle is protected against chemical interaction with said alkaline settable material by the outermost fiber strands of said bundle which are comprised of a polymeric material which is inert to the alkaline settable material.
Claim 3
Dependent Claim
21 words
A shaped body according to claim 1 wherein the mineral material is selected from the group consisting of cement and gypsum.
Claim 4
Dependent Claim
20 words
The shaped body according to claim 1 wherein at least one of the fiber strands is comprised of polyethylene terphthalate.
Claim 5
Dependent Claim
24 words
The shaped body according to claim 1 wherein said settable mineral material further comprises about 5% to about 20% of an organic polymer material.
Claim 6
Dependent Claim
24 words
The shaped body according to claim 4 wherein said polymer material is selected from the group consisting of an acrylic acid polymerisate or copolymerisate.
Claim 7
Independent Claim
112 words
A method for the manufacture of a shaped body comprising: a. embedding a nonwoven fabric of endless reinforcement fibers in an alkaline settable mineral material, the endless fibers having no preferred direction or orientation, and said fibers being comprised of a bundle of individual parallel fiber strands, wherein at least one fiber strand at the core of the bundle is protected against chemical interaction with said alkaline settable material by the outermost fiber strands of said bundle which are comprised of a polymeric material which is inert to the alkaline settable material; b. shaping the product of step (a) into a desired form; and c. causing the settable mineral material to set.
Claim 8
Independent Claim
112 words
A method for the manufacture of a shaped body comprising: a. embedding a nonwoven fabric of endless reinforcement fibers in an alkaline settable mineral material, the endless fibers having no preferred direction or orientation, and said fibers being comprised of a bundle of individual parallel fiber strands, wherein at least one fiber strand at the core of the bundle is protected against chemical interaction with said alkaline settable material by the outermost fiber strands of said bundle which are comprised of a polymeric material which is inert to the alkaline settable material; b. shaping the product of step (a) into a desired form; and c. causing the settable mineral material to set.
Claim 9
Dependent Claim
14 words
The method according to claim 6 wherein the settable material is gypsum or cement.
Claim 10
Dependent Claim
22 words
The method according to claim 6 wherein the settable material further comprises about 5% to about 20% of an inorganic polymer material.
Claim 11
Dependent Claim
20 words
The method according to claim 6 wherein the settable mineral material further comprises an acrylic acid ester polymerisate or copolymerisate.
Claim 12
Dependent Claim
19 words
The method according to claim 6 wherein at least one of the fiber strands is comprised of polyethylene terphthalate.
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) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |