US3080066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating spring loaded riser device
Assignee: JOSEPH ROBB AND CO Ltd
•
Filing: 1960-11-07
•
Granted: 1963-03-05
•
Expires: 1980-11-07
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Berridge
- 👤 Robert S Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:13
CPC Classifications
B; B66; B66F; B66F7/00; B66F7/06; B66F7/065; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/06; B65G1/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A FLOATING SPRING LOADED RISER DEVICE INCLUDING A PAIR OF FRAMES, ONE LOCATED WITHIN THE OTHER, A PIVOT SHAFT PASSING THROUGH THE SAID FRAMES MIDWAY OF THEIR LENGTH TO PERMIT THE PIVOTING OF THE SAID FRAMES RELATIVE TO EACH OTHER AND A PLATFORM PIVOTALLY MOUNTED IN A HORIZONTAL PLANE ON HORIZONTALLY OPPOSING ENDS OF THE SAID FRAMES, A CRADLE PIVOTALLY MOUNTED ON THE SAID PIVOT SHAFT AND WITHIN THE SAID FRAMES, THE SAID CRADLE HAVING A PAIR OF SHAFTS PARALLEL WITH AND IN SPACED APART RELATIONSHIP ON EITHER SIDE OF SAID PIVOT SHAFT, AND ONE OR MORE SPRINGS MOUNTED ON EACH OF SAID PAIR OF SHAFTS, THE SAID SPRINGS HAVING EXTENDED ENDS IN SPRING PRESSURE CONTACT WITH THE VERTICALLY OPPOSED ENDS OF SAID FRAMES, THE SAID SPRINGS HOLDING THE VERTICALLY OPPOSED ENDS OF THE SAID FRAMES APART IN FLOATING RELATIONSHIP.
Claim 2
Dependent Claim
141 words
IN A FLOATING SPRING LOADED RISER DEVICE INCLUDING A PAIR OF FRAMES, ONE LOCATED WITHIN THE OTHER, A PIVOT SHAFT PASSING THROUGH THE SAID FRAMES MIDWAY OF THEIR LENGTH TO PERMIT THE PIVOTING OF THE SAID FRAMES RELATIVE TO EACH OTHER AND A PLATFORM PIVOTALLY MOUNTED IN A HORIZONTAL PLANE ON HORIZONTALLY OPPOSING ENDS OF THE SAID FRAMES, A CRADLE PIVOTALLY MOUNTED ON THE SAID PIVOT SHAFT AND WITHIN THE SAID FRAMES, THE SAID CRADLE HAVING A PAIR OF SHAFTS PARALLEL WITH AND IN SPACED APART RELATIONSHIP ON EITHER SIDE OF SAID PIVOT SHAFT, AND ONE OR MORE SPRINGS MOUNTED ON EACH OF SAID PAIR OF SHAFTS, THE SAID SPRINGS HAVING EXTENDED ENDS IN SPRING PRESSURE CONTACT WITH THE VERTICALLY OPPOSED ENDS OF SAID FRAMES, THE SAID SPRINGS HOLDING THE VERTICALLY OPPOSED ENDS OF THE SAID FRAMES APART IN FLOATING RELATIONSHIP.
References Cited (Backward Citations)
US2798640A
Cited
US2798641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |