US4812348A
Expired / Lapsed
US
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Torsion-stressed component part of superposed fiber layers
Assignee: Volkswagen AG
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Filing: 1987-06-02
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Granted: 1989-03-14
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Expires: 2007-06-02
Abstract
Abstract In order to increase resistance to fatigue which is decreased by crack formation in at least one fiber layer of a torsion-stressed component part, an intermediate layer of a material which is soft relative to the fiber layers is arranged between individual fiber layers.
Inventors
- 👤 Thomas Rau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:39
CPC Classifications
F; F16; F16C; F16C3/00; F16C3/02; F16C3/026; F16C2326/00; F16C2326/01; F16C2326/06; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1369; Y10T428/1372; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24124; Y10T428/24942; Y10T428/24983; Y10T428/31504; Y10T428/31855; Y10T428/31931
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
49 words
A torsion-stressed component part comprising a plurality of superposed rigid fiber-containing layers with fibers oriented in different directions, respectively, and an intermediate layer composed of a material which is soft relative to the fiber layers arranged between at least two superposed fiber-containing layers to join them in force-transmitting relation.
Claim 2
Dependent Claim
49 words
A torsion-stressed component part comprising a plurality of superposed rigid fiber-containing layers with fibers oriented in different directions, respectively, and an intermediate layer composed of a material which is soft relative to the fiber layers arranged between at least two superposed fiber-containing layers to join them in force-transmitting relation.
Claim 3
Dependent Claim
18 words
A component part as defined in claim 1, wherein the intermediate layer is a foil of rubber-like material.
Claim 4
Dependent Claim
24 words
A component part as defined in claim 1, wherein the intermediate layer is joined in a laminar manner with the adjacent fiber containing layers.
Claim 5
Dependent Claim
20 words
A component part as defined in claim 3, wherein the intermediate layer is cemented to the adjacent fiber containing layers.
Claim 6
Dependent Claim
16 words
A component part as defined in claim 1, wherein the intermediate layer is a fleece-like material.
Claim 7
Dependent Claim
59 words
A torsion-stressed component part, comprising: a plurality of superposed rigid fiber-containing layers, the fiber-containing layers of said plurality which are directly superposed upon one another having fiber orientations which differ; and an intermediate layer, of a material which is softer than the fiber-containing layers, arranged between at least two directly superposed fiber-containing layers to join them in force-transmitting relation.
Claim 8
Dependent Claim
59 words
A torsion-stressed component part, comprising: a plurality of superposed rigid fiber-containing layers, the fiber-containing layers of said plurality which are directly superposed upon one another having fiber orientations which differ; and an intermediate layer, of a material which is softer than the fiber-containing layers, arranged between at least two directly superposed fiber-containing layers to join them in force-transmitting relation.
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) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |