Patent US3326091A successfully refreshed from Google Patents.
US3326091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bellows
Assignee: Individual
•
Filing: 1964-08-10
•
Granted: 1967-06-20
•
Expires: 1984-08-10
Abstract
No abstract record available.
Inventors
- 👤 Carmen S Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:28
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/04; F16J3/047; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A BELLOWS OF THE TYPE WHICH IS EXPANDABLE AND CONTRACTABLE TO VARY ITS INTERNAL VOLUME, SAID BELLOWS BEING CONSTRUCTED FROM A SINGLE CORRUGATED TUBE UNCUT ALONG ITS LENGTH, THE CORRUGATIONS OF SAID TUBE FORMING A SERIES OF ANNULAR FOLDS, THE PORTIONS OF EACH OF SAID FOLDS ADJACENT ITS INNER AND OUTER PERIMETERS BEING DISPOSED PARALLEL TO AND IN CONTACT WITH THE NEXT ADJACENT FOLD, THE PORTION OF EACH OF SAID FOLDS INTERMEDIATE ITS INNER AND OUTER PERIMETERS FORMING AN OGEE IN CROSS SECTION AND BEING MORE FLEXIBLE THAN THE PORTIONS THEREOF ADJACENT ITS INNER AND OUTER PERIMETERS.
Claim 2
Dependent Claim
97 words
A BELLOWS OF THE TYPE WHICH IS EXPANDABLE AND CONTRACTABLE TO VARY ITS INTERNAL VOLUME, SAID BELLOWS BEING CONSTRUCTED FROM A SINGLE CORRUGATED TUBE UNCUT ALONG ITS LENGTH, THE CORRUGATIONS OF SAID TUBE FORMING A SERIES OF ANNULAR FOLDS, THE PORTIONS OF EACH OF SAID FOLDS ADJACENT ITS INNER AND OUTER PERIMETERS BEING DISPOSED PARALLEL TO AND IN CONTACT WITH THE NEXT ADJACENT FOLD, THE PORTION OF EACH OF SAID FOLDS INTERMEDIATE ITS INNER AND OUTER PERIMETERS FORMING AN OGEE IN CROSS SECTION AND BEING MORE FLEXIBLE THAN THE PORTIONS THEREOF ADJACENT ITS INNER AND OUTER PERIMETERS.
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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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |