US4023437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament rotor having elastic sheaths covering the filamentary elements of the structure
Assignee: Johns Hopkins University
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Filing: 1975-10-24
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Granted: 1977-05-17
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Expires: 1995-10-24
Abstract
Abstract The invention generally relates to inertial energy storage devices formed of wound anisotropic material. In particular, the invention provides a disc-like flywheel formed of windings of anisotropic filaments wherein the filaments are provided with a relatively thin sheath of flexible material around each of the filaments, the flexible sheath providing positive contact between adjacent windings even during deformation of the windings caused by rotation of the structure.
Inventors
- 👤 David W. Rabenhorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:31
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/30; F16F15/305; Y; Y02; Y02E; Y02E60/00; Y02E60/16; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2117; Y10T74/2119; Y10T74/212
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
79 words
An inertial energy storage device for rotation about a shaft comprising, in combination, rotor means comprised of a plurality of annular rim elements formed of essentially anisotropic material having substantial tensile strength along longitudinal axes thereof; and, a layer of resilient material formed over full surface areas of the annular rim elements, surface portions of the layer covering adjacent rim elements being deformed toward the centers of the rim elements at least prior to rotation of the rotor means.
Claim 2
Dependent Claim
79 words
An inertial energy storage device for rotation about a shaft comprising, in combination, rotor means comprised of a plurality of annular rim elements formed of essentially anisotropic material having substantial tensile strength along longitudinal axes thereof; and, a layer of resilient material formed over full surface areas of the annular rim elements, surface portions of the layer covering adjacent rim elements being deformed toward the centers of the rim elements at least prior to rotation of the rotor means.
Claim 3
Dependent Claim
48 words
The inertial energy storage device of claim 1 wherein the layer of resilient material comprises a sheath of elastomeric material, the sheath essentially conforming to the shape of the annular rim elements, the layer of resilient material being thin relative to the diameter of the annular rim elements.
Claim 4
Dependent Claim
26 words
The inertial energy storage device of claim 1 and further comprising: hub means for carrying the rotor means, the hub means being attached to the shaft.
Claim 5
Dependent Claim
18 words
The inertial energy storage device of claim 1 wherein said rim elements are formed of fiber composite material.
Claim 6
Dependent Claim
16 words
The inertial energy storage rotor device of claim 1 wherein said rim elements comprise filament windings.
Claim 7
Dependent Claim
16 words
The inertial energy storage rotor device of claim 1 wherein said rim elements are discrete rings.
Claim 8
Dependent Claim
44 words
The inertial energy storage device of claim 1 wherein the rim element comprise filament windings, windings beginning at the inner periphery of the rotor means and extending to the outer periphery thereof being wound back inwardly toward the shaft to a point of termination.
Claim 9
Dependent Claim
22 words
The inertial energy storage device of claim 7 wherein the point of termination lies on the inner periphery of the rim means.
Claim 10
Dependent Claim
30 words
The inertial energy storage device of claim 1 wherein certain of the rim elements are disposed within the rotor means at an angle to a plane normal to the shaft.
Claim 11
Dependent Claim
53 words
The inertial energy storage device of claim 9 wherein certain other rim elements are disposed at an equal angle to a plane normal to the shaft as said first-mentioned rim elements, lines along which the second-mentioned rim elements extend having the negative slope of the lines along which the firstmentioned rim elements extend.
Claim 12
Dependent Claim
25 words
The inertial energy storage device of claim 10 wherein the first and second-mentioned rim elements lie alternately in successive layers extending radially from the shaft.
Claim 13
Dependent Claim
84 words
An inertial energy storage device for rotation about a shaft comprising, in combination, rotor means comprised of a plurality of annular rim elements formed of essentially anisotropic material having substantial tensile strength along longitudinal axes thereof, the rim elements comprising filament windings, the windings beginning at the inner periphery of the rotor and extending means to the outer periphery thereof being wound back inwardly toward the shaft to a point of termination; and, resilient means formed over surface portions of the annular rim elements.
Claim 14
Dependent Claim
84 words
An inertial energy storage device for rotation about a shaft comprising, in combination, rotor means comprised of a plurality of annular rim elements formed of essentially anisotropic material having substantial tensile strength along longitudinal axes thereof, the rim elements comprising filament windings, the windings beginning at the inner periphery of the rotor and extending means to the outer periphery thereof being wound back inwardly toward the shaft to a point of termination; and, resilient means formed over surface portions of the annular rim elements.
Claim 15
Dependent Claim
22 words
The inertial energy storage device of claim 12 wherein the point of termination lies on the inner periphery of the rotor means.
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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |