US3159249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damping means
Assignee: University of Minnesota Twin Cities
•
Filing: 1960-01-27
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Granted: 1964-12-01
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Expires: 1980-01-27
Abstract
No abstract record available.
Inventors
- 👤 Benjamin J Lazan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:55
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/98
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A CORRUGATION CONFIGURATION DAMPING STRUCTURE FOR ATTACHMENT TO STRUCTURAL MEMBERS SUBJECTED TO BENDING TO INCREASE THE DAMPING AND STIFFNESS THEREOF, WHICH STRUCTURE COMPRISES A CORRUGATED ELEMENT, THE RIDGE OF SAID CORRUGATED ELEMENT BEING ADAPTED TO BE SPACED AWAY FROM THE SURFACE OF SAID STRUCTURAL MEMBER, MEANS FOR ATTACHING SAID CORRUGATED ELEMENT TO AT LEAST ONE SURFACE OF SAID STRUCTURAL MEMBER, RIGID SUPPORTING MEANS POSITIONED BETWEEN SAID RIDGE AND STRUCTURAL MEMBER SURFACE, SAID SUPPORTING MEANS BEING A LIGHTWEIGHT RIGID CELLULAR MATERIAL DISPOSED BETWEEN SAID CORRUGATION RIDGE AND STRUCTURAL MEMBER SURFACE, A LAYER OF VISCOELASTIC MATERIAL OVERLYING THE RIDGE OF SAID CORRUGATED ELEMENT AND A RESTRAINING COVER LAYER OF FLEXIBLE SHEET MATERIAL OVERLYING SAID VISCOELASTIC LAYER.
Claim 2
Dependent Claim
114 words
A CORRUGATION CONFIGURATION DAMPING STRUCTURE FOR ATTACHMENT TO STRUCTURAL MEMBERS SUBJECTED TO BENDING TO INCREASE THE DAMPING AND STIFFNESS THEREOF, WHICH STRUCTURE COMPRISES A CORRUGATED ELEMENT, THE RIDGE OF SAID CORRUGATED ELEMENT BEING ADAPTED TO BE SPACED AWAY FROM THE SURFACE OF SAID STRUCTURAL MEMBER, MEANS FOR ATTACHING SAID CORRUGATED ELEMENT TO AT LEAST ONE SURFACE OF SAID STRUCTURAL MEMBER, RIGID SUPPORTING MEANS POSITIONED BETWEEN SAID RIDGE AND STRUCTURAL MEMBER SURFACE, SAID SUPPORTING MEANS BEING A LIGHTWEIGHT RIGID CELLULAR MATERIAL DISPOSED BETWEEN SAID CORRUGATION RIDGE AND STRUCTURAL MEMBER SURFACE, A LAYER OF VISCOELASTIC MATERIAL OVERLYING THE RIDGE OF SAID CORRUGATED ELEMENT AND A RESTRAINING COVER LAYER OF FLEXIBLE SHEET MATERIAL OVERLYING SAID VISCOELASTIC LAYER.
References Cited (Backward Citations)
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US1759722A
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US1924504A
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US1919484A
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GB487346A
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GB513171A
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US2322193A
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FR898053A
Cited
US2551600A
Cited
US2819032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |