Patent US4257993A successfully refreshed from Google Patents.
US4257993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing fibre-reinforced concrete and shaped parts produced by this method
Assignee: Individual
•
Filing: 1978-11-30
•
Granted: 1981-03-24
•
Expires: 1998-11-30
Abstract
Abstract A method of manufacturing reinforced elements includes the steps of providing a lattice-like mesh of threads lying in a first plane, applying a plurality of reinforcing fibers so that they extend in planes located at angles to the first plane in which the mesh of threads lies, and embedding the lattice-like mesh with the thus-applied fibers into a bulk of cement. A reinforced concrete element includes a bulk of cement and a reinforcing structure comprising a lattice-like mesh of threads and a plurality of fibers located in planes which are inclined to the plane of the mesh. The reinforcing fibers may extend normal or be inclined to the plane of the mesh of threads. They may be prefixed to the same before the embedding step.
Inventors
- 👤 H. Schemel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:53
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/0006; E; E04; E04C; E04C5/00; E04C5/01; E04C5/02; E04C5/04; E04C5/07; E04C5/073
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
65 words
A method of manufacturing a reinforced concrete, comprising the steps of producing a concrete recipe by combining cement, sand, aggregate and water; providing a mesh of fibers extending in a plane; bonding to said mesh a plurality of reinforcing fibers; embedding said mesh with bonded reinforcing fibers intact into said concrete recipe; and hardening said concrete recipe with said mesh and bonded reinforcing fibers therein.
Claim 2
Independent Claim
65 words
A method of manufacturing a reinforced concrete, comprising the steps of producing a concrete recipe by combining cement, sand, aggregate and water; providing a mesh of fibers extending in a plane; bonding to said mesh a plurality of reinforcing fibers; embedding said mesh with bonded reinforcing fibers intact into said concrete recipe; and hardening said concrete recipe with said mesh and bonded reinforcing fibers therein.
Claim 3
Dependent Claim
22 words
A method as defined in claim 1, wherein said reinforcing fibers extend substantially normal to said plane of said mesh of fibers.
Claim 4
Dependent Claim
22 words
The method as defined in claim 1, wherein said reinforcing fibers are inclined relative to said plane of said mesh of fibers.
Claim 5
Dependent Claim
34 words
A method as defined in claim 1, wherein said bonding step includes applying to said mesh of fiber an adhesive and supplying a stream of the reinforcing fibers onto the thus-processed mesh of fibers.
Claim 6
Dependent Claim
24 words
A method as defined in claim 4, wherein said supplying step includes supplying said reinforcing fibers with the aid of a stream of air.
Claim 7
Dependent Claim
44 words
A method as defined in claim 1, wherein said bonding step includes roughening said reinforcing fibers by bringing rotating rollers into contact with said reinforcing fibers prior to said embedding step so as to elevate said reinforcing fibers from said plane of said mesh.
Claim 8
Dependent Claim
29 words
A method as defined in claim 1, wherein said fibers and said reinforcing fibers are composed of a material selected from the group consisting of glass, polypropylene or sisal.
Claim 9
Dependent Claim
40 words
A method as defined in claim 1, wherein said providing step includes providing such a mesh of fibers in which the fibers are constituted by a material selected from the group consisting of a woven material and a knitted material.
Claim 10
Dependent Claim
34 words
A method as defined in claim 1, wherein said bonding step includes bonding such fibers which are constituted by a material selected from the group consisting of a woven material and a knitted material.
Claim 11
Dependent Claim
57 words
A method as defined in claim 1, and further comprising the step of embedding said mesh of fibers together with said reinforcing fibers applied thereto, into a hardenable cement paste, composed of cement and water, then removing said mesh together with said reinforcing fibers from said cement paste prior to, and followed by, said first-mentioned embedding step.
Claim 12
Dependent Claim
48 words
A method as defined in claim 1; and further comprising the step of prefixing said reinforcing fibers to said mesh of fibers prior to said embedding step, and including spraying said mesh together with said reinforcing fibers applied thereto, with said cement recipe, prior to said embedding step.
References Cited (Backward Citations)
US3489626A
Cited
US3637457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |