US3298747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction nozzle
Assignee: BECKETT HARCUM CO
•
Filing: 1965-05-11
•
Granted: 1967-01-17
•
Expires: 1985-05-11
Abstract
No abstract record available.
Inventors
- 👤 Donald E Beckett
- 👤 Robin K Beckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:09
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/40; B65G53/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A SUCTION NOZZLE FOR GATHERING LOOSE LIGHT-WEIGHT COMPACTABLE MATERIAL, SAID NOZZLE HAVING A PERIPHERAL WALL DEFINING AN INTAKE MOUTH, AND AT LEAST TWO ROTARY SCREW PROPELLERS LOCATED EXTERIORLY AND AHEAD OF SAID MOUTH, FOR LOOSENING COMPACTED MATERIAL AND THRUSTING THE LOOSENED MATERIAL INTO THE MOUTH OF THE NOZZLE, MOTORS FOR INDIVIDUALLY ROTATING THE SCREW PROPELLERS, SAID MOTORS EACH INCLUDING A DRIVING SHAFT UPON WHICH A SCREW PROPELLER IS FIXEDLY MOUNTED, SAID DRIVING SHAFTS BEING SUBSTANTIALLY PARALLEL TO THE DIRECTION OF MATERIAL MOVEMENT THROUGH THE NOZZLE, AND ROTATABLE IN OPPOSITE DIRECTIONS TO NEUTRALIZE THE TORQUE FORCES GENERATED BY THE SCREW PROPELLERS WHEN ROTATING.
Claim 2
Dependent Claim
102 words
A SUCTION NOZZLE FOR GATHERING LOOSE LIGHT-WEIGHT COMPACTABLE MATERIAL, SAID NOZZLE HAVING A PERIPHERAL WALL DEFINING AN INTAKE MOUTH, AND AT LEAST TWO ROTARY SCREW PROPELLERS LOCATED EXTERIORLY AND AHEAD OF SAID MOUTH, FOR LOOSENING COMPACTED MATERIAL AND THRUSTING THE LOOSENED MATERIAL INTO THE MOUTH OF THE NOZZLE, MOTORS FOR INDIVIDUALLY ROTATING THE SCREW PROPELLERS, SAID MOTORS EACH INCLUDING A DRIVING SHAFT UPON WHICH A SCREW PROPELLER IS FIXEDLY MOUNTED, SAID DRIVING SHAFTS BEING SUBSTANTIALLY PARALLEL TO THE DIRECTION OF MATERIAL MOVEMENT THROUGH THE NOZZLE, AND ROTATABLE IN OPPOSITE DIRECTIONS TO NEUTRALIZE THE TORQUE FORCES GENERATED BY THE SCREW PROPELLERS WHEN ROTATING.
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |