US3791900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the production of hollow bodies from reaction resins, which are reinforced with fibres
Assignee: Bayer AG
•
Filing: 1972-01-24
•
Granted: 1974-02-12
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Expires: 1992-01-24
Abstract
Abstract Glass fibre reinforced hollow bodies, e.g. pipes produced from reaction resins, are produced by a winding process whereby the fibres are fed to a supporting layer as endless rovings with a speed which is higher than the circumferential speed of the winding core whereby the supporting layer supplies the rovings to the winding core at a speed equal to the circumferential speed of the latter.
Inventors
- 👤 L Goerden
- 👤 F Gromping
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:29
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C53/00; B29C53/80; B29C70/20; B29C70/202; B29D; B29D23/00; D; D04; D04H; D04H3/00; D04H3/002; D04H3/004; D04H3/02; D04H3/05; D04H3/07; D04H3/073; D04H3/08; D04H3/12; B29B; B29B15/00; B29B15/08
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
13 words
A process according to claim 1, wherein the resin is an unsaturated polyester.
Claim 2
Dependent Claim
13 words
A process according to claim 1, wherein the resin is an epoxide resin.
Claim 3
Dependent Claim
20 words
A process according to claim 1, wherein said continuous fibres are glass fibres, metal fibres, natural fibres, or synthetic fibres.
Claim 4
Dependent Claim
14 words
A process according to claim 1, wherein the supporting layer is formed of rovings.
Claim 5
Dependent Claim
25 words
A process according to claim 1, wherein said continuous fibres are moved transversely backwards and forwards relative to the supporting layer while being delivered thereto.
Claim 6
Dependent Claim
25 words
A process according to claim 1, wherein said continuous fibers are fanned out relative to the supporting layer before being deposited on the supporting layer.
Claim 7
Dependent Claim
15 words
A process according to claim 7, wherein the fanning is effected by an air stream.
Claim 8
Dependent Claim
15 words
A process according to claim 7, wherein the fanning operation is effected by electrostatic charging.
Claim 9
Dependent Claim
28 words
A process according to claim 1, wherein said speed of supply of the continuous fibers to the supporting layer is varied in the circumferential direction of the mandrel.
Claim 10
Dependent Claim
25 words
A process according to claim 1, wherein the speed of supply of said continuous fibers to the supporting layer is varied longitudinally of the mandrel.
Claim 11
Dependent Claim
24 words
A process according to claim 1, wherein the mandrel is rotated for winding the continuous fibers thereon, and said continuous fibers are continuous rovings.
Claim 12
Dependent Claim
13 words
A process according to claim 1, wherein said continuous fibers are continuous rovings.
Claim 13
Dependent Claim
103 words
Apparatus for the production of hollow bodies composed of resin strengthened with continuous fibers, with the resin impregnating the continuous fibers, comprising: a. a rotatably mounted mandrel for receiving and winding thereon of continuous fibers and impregnating resin, b. means for supplying a supporting layer for said continuous fibers and delivering the continuous fibers on the supporting layer to the mandrel for said winding on the mandrel, c. conveyor means for delivery of said continuous fibers to the supporting layer at a delivery speed greater than the circumferential winding speed of the mandrel, d. means for supplying impregnating resin to the continuous fibers.
Claim 14
Dependent Claim
61 words
An apparatus according to claim 14, the conveyor means (c) comprising cooperating rolls for drawing said continuous fibers from a source therefor, and a transversing mechanism positioned to receive the fibers from the rolls and for controlling the path of said continuous fibers onto the support layer and moving said continuous fibers transversely relative to the pAth of the supporting layer.
Claim 15
Dependent Claim
25 words
An apparatus according to claim 14, the conveying means (c) comprising means for fanning the continuous fibers relative to the path of the supporting layer.
Claim 16
Dependent Claim
30 words
An apparatus according to claim 15, the conveying means (c) comprising means for fanning the continuous fibers coming from the transversing mechanism, relative to the path of the supporting layer.
Claim 17
Dependent Claim
12 words
Apparatus according to claim 16, the fanning means comprising an air jet.
Claim 18
Dependent Claim
12 words
Apparatus according to claim 17, the fanning means comprising an air jet.
Claim 19
Dependent Claim
13 words
Apparatus according to claim 16, the fanning means comprising an electrostatic charging device.
Claim 20
Dependent Claim
13 words
Apparatus according to claim 17, the fanning means comprising an electrostatic charging device.
Claim 21
Dependent Claim
45 words
An apparatus according to claim 14, the conveyor means comprising cooperating rolls for drawing the continuous fibers from a source therefor, drive means for the cooperating rolls, and means for controlling the speed of the cooperating rolls in dependence on the operation of the mandrel.
Claim 22
Dependent Claim
16 words
An apparatus according to claim 14, wherein the conveyor device is constructed as a traversing mechanism.
Claim 23
Dependent Claim
25 words
Apparatus according to claim 14, the conveying means being disposed above the support supplying means for fall of said continuous fibers onto the supporting layer.
References Cited (Backward Citations)
US2859506A
Cited
US3616063A
Cited
US3510038A
Cited
US3623930A
Cited
US3341394A
Cited
US3700527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |