Patent US4650620A successfully refreshed from Google Patents.
US4650620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament winding of articles of complex shape
Assignee: Ford Motor Co
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Filing: 1985-02-25
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Granted: 1987-03-17
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Expires: 2005-02-25
Abstract
Abstract In a filament winding technique, filaments are wound around a mandrel, and the mandrel remains in the structure and becomes part, normally a structural part, of the article. The mandrel may be any suitable rigid, light-weight material, but a foamed material such as a structural foam is thought to be most suitable. Metal inserts for attaching other components to the filament wound article can be moulded into the mandrel surface, and locked in place by the filament windings. According to a preferred aspect of the invention a motor vehicle suspension wishbone is made according to such filament winding method and the mandrel on which the filaments are wound remains in the structure.
Inventors
- 👤 Michael J. Owen
- 👤 Victor Middleton
- 👤 Kevin L. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:53
CPC Classifications
B; B60; B60G; B60G7/00; B60G7/001; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C53/00; B29C53/56; B29C53/564; B29C53/80; B29C53/82; B29C53/821; B29C70/00; B29C70/68; B29C70/86; B60G2204/00; B60G2204/10; B60G2204/12; B60G2204/124; B60G2204/1244; B60G2206/00; B60G2206/01; B60G2206/10; Y; Y10; Y10S; Y10S264/00; Y10S264/83
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
84 words
A method of manufacturing an article using a filament winding technique where the article includes fittings by which it can be detachably connected to other components, wherein a mandrel is formed on which filaments can be wound, mounting plates attached to the fittings are embedded in the mandrel skin with the fittings projecting, and filaments are wound onto the mandrel and over the mounting plates to secure the fittings in place, with the mandrel remaining part of the article after winding has been completed.
Claim 2
Independent Claim
84 words
A method of manufacturing an article using a filament winding technique where the article includes fittings by which it can be detachably connected to other components, wherein a mandrel is formed on which filaments can be wound, mounting plates attached to the fittings are embedded in the mandrel skin with the fittings projecting, and filaments are wound onto the mandrel and over the mounting plates to secure the fittings in place, with the mandrel remaining part of the article after winding has been completed.
Claim 3
Dependent Claim
17 words
A method as claimed in claim 1, wherein the mandrel is made as a rigid foamed structure.
Claim 4
Dependent Claim
16 words
A method as claimed in claim 1, wherein the mandrel is formed as a structural foam.
Claim 5
Dependent Claim
14 words
A method as claimed in claim 2, wherein the foam is a thermosetting foam.
Claim 6
Dependent Claim
14 words
A method as claimed in claim 2, wherein the foam is a thermoplastic foam.
Claim 7
Dependent Claim
14 words
A method as claimed in claim 4, wherein the foam is a polyurethane foam.
Claim 8
Dependent Claim
14 words
A method as claimed in claim 5, wherein the foam is a polyethylene foam.
Claim 9
Dependent Claim
14 words
A method as claimed in claim 5, wherein the foam is a polypropylene foam.
Claim 10
Dependent Claim
16 words
A method as claimed in claim 1, wherein the mandrel is formed by reaction injection moulding.
Claim 11
Dependent Claim
21 words
A method as claimed in claim 9, wherein the mountin plates are metal and are moulded in to the mandrel skin.
Claim 12
Dependent Claim
27 words
A method as claimed in claim 10, wherein each mounting plate has a tapered portion, and the tapered portions are embedded in the material of the mandrel.
Claim 13
Dependent Claim
23 words
A method as claimed in claim 4, wherein the mould for the mandrel is made in two halves, plus a side mould piece.
Claim 14
Dependent Claim
23 words
A method as claimed in claim 6, wherein the mould for the mandrel is made in two halves, plus a side mould piece.
Claim 15
Dependent Claim
30 words
A method as claimed in claim 5, wherein two moulds are used to make the mandrel in two halves which are secured together after moulding to make a hollow shell.
Claim 16
Dependent Claim
21 words
A method as claimed in claim 1, wherein the filaments are wound on geodesic or near-geodesic paths on the mandrel surface.
Claim 17
Dependent Claim
28 words
A method as claimed in claim 15, wherein the mandrel shape is approximated by a series of regular shapes, and geodesic paths are determined on these regular shapes.
References Cited (Backward Citations)
US3617593A
Cited
US3551237A
Cited
US3843759A
Cited
US4002715A
Cited
US4090002A
Cited
US4256680A
Cited
EP0012167A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |