US3602066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-energy flywheel
Assignee: RTX Corp
•
Filing: 1969-09-18
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Granted: 1971-08-31
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Expires: 1989-09-18
Abstract
Abstract A rotary device, for example, a flywheel is built up of layers of circumferentially extending high-strength filaments embedded in a matrix to form a composite with a hub attached for supporting the wheel, in which the characteristics of the composite, at least near the inner diameter, are selected so that under load the hub and wheel are strain compatible where they are connected together.
Inventors
- 👤 Arthur E Wetherbee Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:51
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/30; F16F15/305; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2121; Y10T74/2132
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
A rotary structure comprising a rim portion made of a composite of continuous circumferentially extending filaments embedded in a matrix, a metallic hub centrally of the rim, and an annular connecting portion between the hub and the rim and attached at inner and outer edges to the hub and rim respectively, said portion being made of a composite of circumferentially extending filaments embedded in a matrix, with the composite of said portion having a higher modulus ratio than the hub to be strain compatible with the hub when the structure is in operation.
Claim 2
Dependent Claim
93 words
A rotary structure comprising a rim portion made of a composite of continuous circumferentially extending filaments embedded in a matrix, a metallic hub centrally of the rim, and an annular connecting portion between the hub and the rim and attached at inner and outer edges to the hub and rim respectively, said portion being made of a composite of circumferentially extending filaments embedded in a matrix, with the composite of said portion having a higher modulus ratio than the hub to be strain compatible with the hub when the structure is in operation.
Claim 3
Dependent Claim
35 words
A rotary structure as in claim 1 in which the hub and the composite of the rim have lower modulus ratios than the connecting portion to be strain compatible at the areas of attachment therebetween.
Claim 4
Dependent Claim
26 words
A rotary structure as in claim 1 in which the matrix of the connecting portion has a lower modulus of elasticity than that of the rim.
Claim 5
Dependent Claim
56 words
A rotary structure comprising a rim portion of anisotropic material, a metallic hub, and an annular connector of anisotropic material between the hub and rim and attached to said hub and rim at inner and outer edges of the connector, the material of said connector having a higher modulus ratio than the rim and the hub.
Claim 6
Dependent Claim
56 words
A rotary structure comprising a rim portion of anisotropic material, a metallic hub, and an annular connector of anisotropic material between the hub and rim and attached to said hub and rim at inner and outer edges of the connector, the material of said connector having a higher modulus ratio than the rim and the hub.
Claim 7
Dependent Claim
23 words
A rotary structure as in claim 4 in which the rim and connector both have continuous circumferentially extending filaments embedded in a matrix.
Claim 8
Dependent Claim
28 words
A rotary structure as in claim 4 in which the connector is made of a composite of circumferentially extending filaments embedded in a matrix having a low modulus.
Claim 9
Dependent Claim
41 words
A rotary structure as in claim 4 in which the rim and connector are made of composites of circumferentially extending filaments embedded in a matrix, the matrix of the connector having a lower modulus of elasticity than that of the rim.
References Cited (Backward Citations)
US3363479A
Cited
US3296886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |