Patent US3578305A successfully refreshed from Google Patents.
US3578305A
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Spring
Assignee: Gesellschaft fuer Kernforschung mbH
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Filing: 1968-08-28
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Granted: 1971-05-11
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Expires: 1988-08-28
Abstract
Abstract A novel spring composed of a multiplicity of doubly arcuate plates (preferably hyperbolic parabaloids) which are attached together into a stack. The particular attachment means is for next adjacent plates to be attached to each other along a pair of opposite edges with each plate being attached to the plate before it and the plate after it by alternating opposite edge pairs (preferably 90* apart).
Inventors
- 👤 Otto Muelhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:20
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
A spring consisting of a multiplicity of curved plates each of which is attached to and supported by two opposite edges of the next adjacent plate, wherein each plate except the first and the last is attached to both the plates next adjacent thereto at alternating opposite edge pairs thereof.
Claim 2
Dependent Claim
50 words
A spring consisting of a multiplicity of curved plates each of which is attached to and supported by two opposite edges of the next adjacent plate, wherein each plate except the first and the last is attached to both the plates next adjacent thereto at alternating opposite edge pairs thereof.
Claim 3
Dependent Claim
18 words
Spring as claimed in claim 1, where the plates have the shape of regular hyperbolic paraboloids (saddle areas).
Claim 4
Dependent Claim
20 words
Spring as claimed in claim 1, where the rims of the plates are flattened at the periphery of their dishings.
Claim 5
Dependent Claim
43 words
Spring as claimed in claim 1, where the spring bank is inserted in a vessel filled at least partly with a damping medium, especially a liquid and where the plates have radial shoulders engaging in the longitudinal guide grooves of the vessel shell.
Claim 6
Dependent Claim
34 words
A spring as claimed in claim 1, provided with guide members wherein the plates of the spring are each subdivided into four sectors with the curvature of each adjacent sector being in opposite directions.
References Cited (Backward Citations)
US3002740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |