Patent US3080045A successfully refreshed from Google Patents.
US3080045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable screw assembly
Assignee: H L STOKER CO
•
Filing: 1959-08-03
•
Granted: 1963-03-05
•
Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:42
CPC Classifications
B; B65; B65G; B65G33/00; B65G33/24; B65G33/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A REMOVABLE SCREW ASSEMBLY OF THE TYPE HAVING A SCREW FLIGHT AND A DRIVE CONNECTION AT OPPOSITE ENDS OF A DRIVE SHAFT AND WHICH IS ADAPTED TO EXTEND THROUGH AN APERTURE IN A MATERIAL CONTAINER WALL, THE COMBINATION OF A PACKING SEAL ENCLOSING THE DRIVE SHAFT BETWEEN THE SCREW FLIGHT AND THE DRIVE CONNECTION, A PLURALITY OF ANTIFRICTION SUPPORT MEMBERS POSITIONED ABOUT THE DRIVE SHAFT BETWEEN THE PACKING SEAL AND THE DRIVE CONNECTION SO AS TO SUPPORT THE DRIVE SHAFT, A SEAL RING DISPOSED ABOUT THE DRIVE SHAFT BETWEEN THE PACKING SEAL AND THE SCREW FLIGHT, AND MEANS ATTACHING THE PACKING SEAL TO THE SEAL RING, SAID SEAL RING BEING INSERTABLE INTO SAID APERTURE TO FORM A SEAL WITH SAID CONTAINER WALL.
Claim 2
Dependent Claim
123 words
IN A REMOVABLE SCREW ASSEMBLY OF THE TYPE HAVING A SCREW FLIGHT AND A DRIVE CONNECTION AT OPPOSITE ENDS OF A DRIVE SHAFT AND WHICH IS ADAPTED TO EXTEND THROUGH AN APERTURE IN A MATERIAL CONTAINER WALL, THE COMBINATION OF A PACKING SEAL ENCLOSING THE DRIVE SHAFT BETWEEN THE SCREW FLIGHT AND THE DRIVE CONNECTION, A PLURALITY OF ANTIFRICTION SUPPORT MEMBERS POSITIONED ABOUT THE DRIVE SHAFT BETWEEN THE PACKING SEAL AND THE DRIVE CONNECTION SO AS TO SUPPORT THE DRIVE SHAFT, A SEAL RING DISPOSED ABOUT THE DRIVE SHAFT BETWEEN THE PACKING SEAL AND THE SCREW FLIGHT, AND MEANS ATTACHING THE PACKING SEAL TO THE SEAL RING, SAID SEAL RING BEING INSERTABLE INTO SAID APERTURE TO FORM A SEAL WITH SAID CONTAINER WALL.
References Cited (Backward Citations)
US1001687A
Cited
US1145516A
Cited
US1130858A
Cited
US1607222A
Cited
US2135308A
Cited
US2556392A
Cited
US2891655A
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 |