US3273916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary flexible metallic connector
Assignee: Individual
•
Filing: 1961-03-13
•
Granted: 1966-09-20
•
Expires: 1981-03-13
Abstract
No abstract record available.
Inventors
- 👤 Lloyd E Tillery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:15
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/14; F16L11/15; B; B21; B21D; B21D15/00; B21D15/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877; Y10T29/49908; Y10T29/49915; Y10T29/4992
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A FLEXIBLE COUPLING COMPRISING: (A) A CENTRAL SPIRAL GROOVED CORRUGATED METALLIC TUBE, (B) CYLINDRICAL END PORTIONS EACH OF DIAMETER CORRESPONDING APPROXIMATELY WITH THE ROOT OF THE SPIRAL GROOVE, AND (C) AN ANNULAR FRUSTO-CONICAL TRANSITION ZONE BETWEEN EACH OF SAID END PORTIONS AND SAID CENTRAL PORTION WITH SAID SPIRAL GROOVE ENDING IN THE TRANSITION ZONES, THE MAXIMUM DIAMETER OF SAID ZONES CORRESPONDING APPROXIMATELY WITH THE CRESTS ON THE CENTRAL SPIRAL PORTION.
Claim 2
Dependent Claim
70 words
A FLEXIBLE COUPLING COMPRISING: (A) A CENTRAL SPIRAL GROOVED CORRUGATED METALLIC TUBE, (B) CYLINDRICAL END PORTIONS EACH OF DIAMETER CORRESPONDING APPROXIMATELY WITH THE ROOT OF THE SPIRAL GROOVE, AND (C) AN ANNULAR FRUSTO-CONICAL TRANSITION ZONE BETWEEN EACH OF SAID END PORTIONS AND SAID CENTRAL PORTION WITH SAID SPIRAL GROOVE ENDING IN THE TRANSITION ZONES, THE MAXIMUM DIAMETER OF SAID ZONES CORRESPONDING APPROXIMATELY WITH THE CRESTS ON THE CENTRAL SPIRAL PORTION.
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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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |