Patent US3153558A successfully refreshed from Google Patents.
US3153558A
Expired / Lapsed
US
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Pneumatic discharge hopper arrangement
Assignee: Pullman Inc
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Filing: 1962-01-10
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Granted: 1964-10-20
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Expires: 1982-01-10
Abstract
No abstract record available.
Inventors
- 👤 Jack W Borger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:21
CPC Classifications
B; B61; B61D; B61D5/00; B61D5/002; B61D5/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
AN APPARATUS FOR CONVEYING GRANULAR MATERIAL FROM A HOPPER BY WAY OF A PNEUMATIC FEED SYSTEM EMPLOYING A SUCTION COMPRISING AN ATTACHMENT INCLUDING A SUBSTANTIALLY V-SHAPED HOUSING HAVING END WALLS AND CONVERGING SIDE WALLS, A TUBULAR FEED MEMBER ADJACENT THE NADIR OF SAID HOUSING AND EXTENDING BETWEEN THE END WALLS THEREOF, SAID TUBULAR MEMBER HAVING AT LEAST ONE END PROJECTING BEYOND ONE OF SAID END WALLS TO PROVIDE AN OUTLET ADAPTED TO BE CONNECTED TO THE SUCTION MEANS, AND OPENING MEANS FORMED IN SAID TUBULAR MEMBER BETWEEN SAID END WALLS AND LOCATED SO THAT ONE OF SAID SIDE WALLS PARTIALLY OVERLIES THE SAME TO PROVIDE BAFFLE MEANS PRECLUDING THE COMPLETE FILLING OF SAID TUBULAR MEMBER AND SAID OTHER OF SAID SIDE WALLS PROVIDES A TANGENTIAL FEED SURFACE THROUGH SAID OPENING.
Claim 2
Independent Claim
130 words
AN APPARATUS FOR CONVEYING GRANULAR MATERIAL FROM A HOPPER BY WAY OF A PNEUMATIC FEED SYSTEM EMPLOYING A SUCTION COMPRISING AN ATTACHMENT INCLUDING A SUBSTANTIALLY V-SHAPED HOUSING HAVING END WALLS AND CONVERGING SIDE WALLS, A TUBULAR FEED MEMBER ADJACENT THE NADIR OF SAID HOUSING AND EXTENDING BETWEEN THE END WALLS THEREOF, SAID TUBULAR MEMBER HAVING AT LEAST ONE END PROJECTING BEYOND ONE OF SAID END WALLS TO PROVIDE AN OUTLET ADAPTED TO BE CONNECTED TO THE SUCTION MEANS, AND OPENING MEANS FORMED IN SAID TUBULAR MEMBER BETWEEN SAID END WALLS AND LOCATED SO THAT ONE OF SAID SIDE WALLS PARTIALLY OVERLIES THE SAME TO PROVIDE BAFFLE MEANS PRECLUDING THE COMPLETE FILLING OF SAID TUBULAR MEMBER AND SAID OTHER OF SAID SIDE WALLS PROVIDES A TANGENTIAL FEED SURFACE THROUGH SAID OPENING.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |