Patent US4665639A successfully refreshed from Google Patents.
US3213764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damped bellows construction
Assignee: Bendix Corp
•
Filing: 1963-11-27
•
Granted: 1965-10-26
•
Expires: 1983-11-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Nelson
- 👤 Ralph L Burlingame
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:33
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/0616; G05D16/0625; F; F16; F16F; F16F9/00; F16F9/02; F16F9/04; F16F9/0409; F16J; F16J3/00; F16J3/04; F16J3/041; Y; Y10; Y10S; Y10S277/00; Y10S277/916
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A DAMPENED BELLOWS CONSTRUCTION COMPRISING: A MEATL BELLOWS MEMBER HVING A CONVOLUTED WALL OF HIGH RESILIENCEY CAPABLE OF EFFICIENTLY STORING AND RETURING VIBRATION ENERGY INTO THE BELLOWS CONSTRUCTION WHEN SUBJECTED TO A VIBRATING ENVIRONMENT, A FIRST PRIMARY LAYER OF VISCOELASTIC MATERIAL HAVING AN ENERGY ABSORBING EFFICIENCY OF GREATER THAN 65% BONDED TO SAID CONVOLUTED WALL FOR ABSORBING A MAJOR PORTION OF SAID VBIRATION ENERGY AND PREVENTING ITS RETURN TO THE BELLOWS CONSTRUCTION, A SECOND CONSTRAINING LAYER OF MATERIAL HAVING A STIFFNESS
Claim 2
Dependent Claim
81 words
A DAMPENED BELLOWS CONSTRUCTION COMPRISING: A MEATL BELLOWS MEMBER HVING A CONVOLUTED WALL OF HIGH RESILIENCEY CAPABLE OF EFFICIENTLY STORING AND RETURING VIBRATION ENERGY INTO THE BELLOWS CONSTRUCTION WHEN SUBJECTED TO A VIBRATING ENVIRONMENT, A FIRST PRIMARY LAYER OF VISCOELASTIC MATERIAL HAVING AN ENERGY ABSORBING EFFICIENCY OF GREATER THAN 65% BONDED TO SAID CONVOLUTED WALL FOR ABSORBING A MAJOR PORTION OF SAID VBIRATION ENERGY AND PREVENTING ITS RETURN TO THE BELLOWS CONSTRUCTION, A SECOND CONSTRAINING LAYER OF MATERIAL HAVING A STIFFNESS
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |