Patent US3326355A successfully refreshed from Google Patents.
US3326355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor system
Assignee: Hewitt Robins Inc
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Filing: 1965-02-08
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Granted: 1967-06-20
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Expires: 1985-02-08
Abstract
No abstract record available.
Inventors
- 👤 Peter J Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:04
CPC Classifications
B; B65; B65G; B65G23/00; B65G23/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A CONVEYOR SYSTEM WHICH COMPRISES A BELT CAPABLE OF BEING VARIABLY TENSIONED ALONG ITS LENGTH AND HAVING A RANGE OF OPERATING SPEEDS, A HEAD DRIVE, A TAIL DRIVE, AND MEANS DRIVINGLY CONNECTING EACH OF SAID DRIVES TO SAID BELT, SAID DRIVES HAVING SUCH DIFFERENT INDIVIDUAL TORQUESPEED CHARACTERISTICS AND BEING CONNECTED TO SAID BELT BY THE RESPECTIVE SAID MEANS SUCH THAT THE SPEED OF SAID DRIVES WILL VARY AS THE SPEED OF SAID BELT VARIES AND SAID DRIVES WILL APPLY DRIVING FORCES TO THE BELT WHICH WILL ACT IN OPPOSITION TO EACH OTHER BY A SIGNIFICANT AMOUNT AT LEAST DURING A CERTAIN RANGE OF OPERATING SPEEDS OF SAID BELT, SAID CHARACTERISTICS OF SAID DRIVES AND THE CONNECTION OF SAID DRIVES TO SAID BELT BY SAID MEANS FURTHER BEING SUCH THAT THE TENSION IN THE BELT BETWEEN THE TWO DRIVES
Claim 2
Dependent Claim
138 words
A CONVEYOR SYSTEM WHICH COMPRISES A BELT CAPABLE OF BEING VARIABLY TENSIONED ALONG ITS LENGTH AND HAVING A RANGE OF OPERATING SPEEDS, A HEAD DRIVE, A TAIL DRIVE, AND MEANS DRIVINGLY CONNECTING EACH OF SAID DRIVES TO SAID BELT, SAID DRIVES HAVING SUCH DIFFERENT INDIVIDUAL TORQUESPEED CHARACTERISTICS AND BEING CONNECTED TO SAID BELT BY THE RESPECTIVE SAID MEANS SUCH THAT THE SPEED OF SAID DRIVES WILL VARY AS THE SPEED OF SAID BELT VARIES AND SAID DRIVES WILL APPLY DRIVING FORCES TO THE BELT WHICH WILL ACT IN OPPOSITION TO EACH OTHER BY A SIGNIFICANT AMOUNT AT LEAST DURING A CERTAIN RANGE OF OPERATING SPEEDS OF SAID BELT, SAID CHARACTERISTICS OF SAID DRIVES AND THE CONNECTION OF SAID DRIVES TO SAID BELT BY SAID MEANS FURTHER BEING SUCH THAT THE TENSION IN THE BELT BETWEEN THE TWO DRIVES
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) | 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 |