US3074520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuity device
Assignee: AT&T Inc
•
Filing: 1960-01-04
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Granted: 1963-01-22
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Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Matthew J Grubelich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:51
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/14; H01Q15/16; H01Q15/165; Y; Y10; Y10T; Y10T24/00; Y10T24/30; Y10T24/309; Y10T24/44; Y10T24/44068; Y10T403/00; Y10T403/54
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
143 words
A CONTINUITY DEVICE COMPRISING A PNEUMATICALLY DEFORMABLE PORTION JOINED TO A BRIDGING PORTION, THE PNEUMATICALLY DEFORMABLE PORTION BEING HOLLOW AND THE WALL THEREOF SELECTIVELY VARYING IN FLEXIBILITY, THE DEFORMABLE PORTION WHEN RELAXED HAVING A FIRST SHAPE THAT HAS A PARTICULAR PERIPHERAL LENGTH AND INCLUDES BEARING PORTIONS THAT ARE SPACED A FIRST DISTANCE FROM THE BRIDGING PORTION AND LATERAL EXTREMITIES THAT ARE SPACED A SECOND DISTANCE APART, AND THE DEFORMABLE PORTION WHEN DEFORMED BY A PRESSURE DIFFERENTIAL BETWEEN THE INSIDE AND OUTSIDE THEREOF HAVING A SECOND SHAPE IN WHICH THE PERIPHERAL LENGTH THEREOF IS SUBSTANTIALLY THE SAME AS THE PERIPHERAL LENGTH OF THE FIRST SHAPE BUT THE BEARING PORTIONS ARE SPACED A THIRD DISTANCE FROM THE BRIDGING PORTION, WHICH DISTANCE IS GREATER THAN THE FIRST DISTANCE, AND THE LATERAL EXTREMITIES ARE SPACED A FOURTH DISTANCE APART, WHICH DISTANCE IS LESS THAN THE SECOND DISTANCE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |