US3140016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for maintaining the flow of solid powdered materials
Assignee: New York Air Brake LLC
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Filing: 1962-03-20
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Granted: 1964-07-07
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Expires: 1982-03-20
Abstract
No abstract record available.
Inventors
- 👤 Wilbur H Frazel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:15
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; B65D88/64; B65D88/66; A; A01; A01C; A01C15/00; A01C15/005; A01C15/006; A01C15/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN A HOPPER FOR FLOWABLE SOLID MATERIALS COMPRISING A SOLID CONTINUOUS WALL CONVERGING FROM ITS UPPER RECEIVING END TO ITS LOWER DISCHARGE END, AN AGITATOR WITHIN SAID WALL COMPRISING AN OPEN MESH CAGE-LIKE STRUCTURE HAVING AN OPEN MESH SIDE WALL CONFORMING GENERALLY TO THE SHAPE OF A PORTION OF THE SOLID WALL AND SURROUNDING AN OPEN MESH LATERAL WALL EXTENDING AT GENERALLY RIGHT ANGLES TO THE LINE OF FLOW OF THE MATERIAL THROUGH THE HOPPER, AND MEANS TO VIBRATE SAID CAGE TO MAINTAIN FLOW OF THE MATERIAL FROM THE HOPPER.
Claim 2
Dependent Claim
90 words
IN A HOPPER FOR FLOWABLE SOLID MATERIALS COMPRISING A SOLID CONTINUOUS WALL CONVERGING FROM ITS UPPER RECEIVING END TO ITS LOWER DISCHARGE END, AN AGITATOR WITHIN SAID WALL COMPRISING AN OPEN MESH CAGE-LIKE STRUCTURE HAVING AN OPEN MESH SIDE WALL CONFORMING GENERALLY TO THE SHAPE OF A PORTION OF THE SOLID WALL AND SURROUNDING AN OPEN MESH LATERAL WALL EXTENDING AT GENERALLY RIGHT ANGLES TO THE LINE OF FLOW OF THE MATERIAL THROUGH THE HOPPER, AND MEANS TO VIBRATE SAID CAGE TO MAINTAIN FLOW OF THE MATERIAL FROM THE HOPPER.
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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |