US3221938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder spraying apparatus
Assignee: Oxy Dry Sprayer Corp
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Filing: 1964-12-18
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Granted: 1965-12-07
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Expires: 1984-12-18
Abstract
No abstract record available.
Inventors
- 👤 Edward H Yonkers
- 👤 Seymour Z Lewin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:37
CPC Classifications
B; B41; B41F; B41F23/00; B41F23/04; B41F23/06; Y; Y10; Y10S; Y10S118/00; Y10S118/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
APPARATUS FOR DISPENSING HIGHLY PARTICULATE MATERIAL COMPRISING A DISPENSING ROLLER; A PAIR OF WIPING BLADES; MEANS INCLUDING SAID DISPENSING ROLLER AND SAID WIPING BLADES FOR FORMING A RECEPTACLE ABOVE SAID ROLLER FOR RETAINING THE HIGHLY PARTICULATE MATERIAL TO BE DISPENSED; A METERING MECHANISM INCLUDING SAID DISPENSING ROLLER AND ONE OF SAID WIPING BLADES DISPOSED TO TANGENTIALLY ENGAGE SAID ROLLER SO THAT PARTICULATE MATERIAL IS DISPENSED FROM SAID RECEPTACLE AS SAID DISPENSING ROLLER ROTATES; A RIGID ELECTRODE STRUCTURE INCLUDING AN ELONGATED METALLIC ELECTRODE DISPOSED IN A FIXED RELATION PARALLEL TO SAID DISPENSING ROLLER AND BELOW THE OTHER ONE OF SAID WIPING BLADES; A SHEATH OF DIELECTRIC MATERIAL SNUGLY FIT SURROUNDING SAID ELECTRODE; A HIGH POTENTIAL ELECTRIC SOURCE FOR ENERGIZING SAID ELECTRODE TO CREATE AN ELECTRIC FIELD CAPABLE OF FREEING PARTICLES FROM THE SURFACE OF SAID DISPENSING ROLLER AND THEREAFTER DISPERSING THE SAME; AND MEANS OPERATIVELY ASSOCIATED WITH SAID ELECTRODE STRUCTURE FOR PREVENTING ACCUMULATION OF PARTICULATE MATERIAL THEREON.
Claim 2
Dependent Claim
156 words
APPARATUS FOR DISPENSING HIGHLY PARTICULATE MATERIAL COMPRISING A DISPENSING ROLLER; A PAIR OF WIPING BLADES; MEANS INCLUDING SAID DISPENSING ROLLER AND SAID WIPING BLADES FOR FORMING A RECEPTACLE ABOVE SAID ROLLER FOR RETAINING THE HIGHLY PARTICULATE MATERIAL TO BE DISPENSED; A METERING MECHANISM INCLUDING SAID DISPENSING ROLLER AND ONE OF SAID WIPING BLADES DISPOSED TO TANGENTIALLY ENGAGE SAID ROLLER SO THAT PARTICULATE MATERIAL IS DISPENSED FROM SAID RECEPTACLE AS SAID DISPENSING ROLLER ROTATES; A RIGID ELECTRODE STRUCTURE INCLUDING AN ELONGATED METALLIC ELECTRODE DISPOSED IN A FIXED RELATION PARALLEL TO SAID DISPENSING ROLLER AND BELOW THE OTHER ONE OF SAID WIPING BLADES; A SHEATH OF DIELECTRIC MATERIAL SNUGLY FIT SURROUNDING SAID ELECTRODE; A HIGH POTENTIAL ELECTRIC SOURCE FOR ENERGIZING SAID ELECTRODE TO CREATE AN ELECTRIC FIELD CAPABLE OF FREEING PARTICLES FROM THE SURFACE OF SAID DISPENSING ROLLER AND THEREAFTER DISPERSING THE SAME; AND MEANS OPERATIVELY ASSOCIATED WITH SAID ELECTRODE STRUCTURE FOR PREVENTING ACCUMULATION OF PARTICULATE MATERIAL THEREON.
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |