Patent US3174619A successfully refreshed from Google Patents.
US3174619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Troughed belt conveyor
Assignee: United States Steel Corp
•
Filing: 1961-11-09
•
Granted: 1965-03-23
•
Expires: 1981-11-09
Abstract
No abstract record available.
Inventors
- 👤 Bronnie F Krane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:46
CPC Classifications
B; B65; B65G; B65G45/00; B65G45/10; B65G39/00; B65G39/02; B65G39/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A CONVEYOR COMPRISING TROUGHED HEAD AND TAIL PULLEYS, A RESILIENT BELT PASSING AROUND SAID HEAD AND TAIL PULLEYS, A SUBSTANTIALLY CYLINDRICAL ROLL ARRANGED CLOSE TO SAID HEAD PULLEYS AND BEARING AGAINST THE TOP SIDE OF THE LOWER RUN OF THE BELT OVER THE FULL WIDTH THEREOF, AND A SUBSTANTIALLY CYLINDRICAL IDLER ROLL SPACED FROM SAID FIRST NAMED CYLINDRICAL ROLL TOWARD SAID TAIL PULLEY AND BEARING AGAINST THE BOTTOM SIDE OF THE LOWER RUN OF THE BELT, THE TOP OF SAID IDLER ROLL BEING IN A PLANE ABOVE THE BOTTOM OF SAID HEAD PULLEY.
Claim 2
Dependent Claim
93 words
A CONVEYOR COMPRISING TROUGHED HEAD AND TAIL PULLEYS, A RESILIENT BELT PASSING AROUND SAID HEAD AND TAIL PULLEYS, A SUBSTANTIALLY CYLINDRICAL ROLL ARRANGED CLOSE TO SAID HEAD PULLEYS AND BEARING AGAINST THE TOP SIDE OF THE LOWER RUN OF THE BELT OVER THE FULL WIDTH THEREOF, AND A SUBSTANTIALLY CYLINDRICAL IDLER ROLL SPACED FROM SAID FIRST NAMED CYLINDRICAL ROLL TOWARD SAID TAIL PULLEY AND BEARING AGAINST THE BOTTOM SIDE OF THE LOWER RUN OF THE BELT, THE TOP OF SAID IDLER ROLL BEING IN A PLANE ABOVE THE BOTTOM OF SAID HEAD PULLEY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |