US3304647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duster devices
Assignee: Individual
•
Filing: 1964-10-02
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Granted: 1967-02-21
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Expires: 1984-10-02
Abstract
No abstract record available.
Inventors
- 👤 Szekely George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:43
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/144; B05B7/1445; A; A01; A01M; A01M9/00; A01M9/0007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A DUSTER DEVICE OF THE CHARACTER DESCRIBED, THE COMBINATION OF A TUBE HAVING AN INTAKE END AND A DISCHARGE END FOR THE FLOW OF AIR THERETHROUGH, A DOWNWARDLY-DISCHARGING, POWDER-SPRINKLING CONTAINER, MEANS CONNECTING SAID TUBE TO SAID CONTAINER WHEREBY SAID CONTAINER CONSTITUTES AN UPWARDLY EXTENDING BRANCH OF SAID TUBE; AT LEAST PART OF SAID CONNECTION MEANS BEING EXTENSIBLE AND CONTRACTABLE WHEREBY SAID CONTAINER IS SHAKABLE IN RELATION TO SAID TUBE, A VIBRATABLE ARMATURE CONNECTED TO SAID CONTAINER, AN ELECTRO-MAGNETIC MEANS FOR ACTUATING SAID VIBRATABLE ARMATURE, AN AIR PUMP CONNECTED TO DISCHARGE INTO THE INTAKE END OF THE TUBE AND MEANS CONNECTING SAID VIBRATABLE ARMATURE TO SAID PUMP, WHEREUPON ACTUATION OF SAID ELECTRO-MAGNETIC MEANS, THE PUMP IS OPERATED AND THE CONTAINER IS SHAKEN.
Claim 2
Dependent Claim
122 words
IN A DUSTER DEVICE OF THE CHARACTER DESCRIBED, THE COMBINATION OF A TUBE HAVING AN INTAKE END AND A DISCHARGE END FOR THE FLOW OF AIR THERETHROUGH, A DOWNWARDLY-DISCHARGING, POWDER-SPRINKLING CONTAINER, MEANS CONNECTING SAID TUBE TO SAID CONTAINER WHEREBY SAID CONTAINER CONSTITUTES AN UPWARDLY EXTENDING BRANCH OF SAID TUBE; AT LEAST PART OF SAID CONNECTION MEANS BEING EXTENSIBLE AND CONTRACTABLE WHEREBY SAID CONTAINER IS SHAKABLE IN RELATION TO SAID TUBE, A VIBRATABLE ARMATURE CONNECTED TO SAID CONTAINER, AN ELECTRO-MAGNETIC MEANS FOR ACTUATING SAID VIBRATABLE ARMATURE, AN AIR PUMP CONNECTED TO DISCHARGE INTO THE INTAKE END OF THE TUBE AND MEANS CONNECTING SAID VIBRATABLE ARMATURE TO SAID PUMP, WHEREUPON ACTUATION OF SAID ELECTRO-MAGNETIC MEANS, THE PUMP IS OPERATED AND THE CONTAINER IS SHAKEN.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |