US2785124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of discharging carbon dioxide to inhibit the generation of electrostatic charges
Assignee: Specialties Development Corp
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Filing: 1952-01-23
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Granted: 1957-03-12
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Expires: 1972-01-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry C Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:09
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
THE METHOD OF DISCHARGING A CHARGE OF FLUID CARBON DIOXIDE COMPOSITION CONFINED IN A CONTAINER UNDER PRESSURE FROM A NOZZLE THROUGH A SHIELD TO FORM CARBON DIOXIDE SNOW PARTICLES, WHICH METHOD COMPRISES INTRODUCING INTO THE CARBON DIOXIDE BETWEEN AT LEAST ABOUT 2% BUT NOT EXCEEDING 5% BY WEIGHT OF THE COMPOSITION OF AN OILY HYDROCARBON MATERIAL HAVING A LOW SURFACE TENSION AND BEING CAPABLE OF EXISTING IN READILY FLOWABLE STATE AT A TEMPERATURE OF -5*F. AND BEING CAPABLE OF RETAINING ITS OILY CHARACTERISTICS AT A TEMPERATURE OF -135*F., AND DIRECTING THE CARBON DIOXIDE AND THE OILY MATERIAL IN ADMIXTURE THEREWITH THROUGH THE NOZZLE TO FORM CARBON DIOXIDE SNOW PARTICLES IN THE SHIELD WHEREBY THE SNOW PARTICLES AND THE INTERIOR OF THE SHIELD ARE COATED WITH THE OILY MATERIAL TO FORM A PERSISTENT FRICTIONLESS FILM IN THE INTERIOR OF THE SHIELD ADAPTED TO INHIBIT THE GENERATION OF ELECTROSTATIC CHARGES UPON THE FLOW OF SNOW PARTICLES THROUGH THE SHIELD.
Claim 2
Independent Claim
157 words
THE METHOD OF DISCHARGING A CHARGE OF FLUID CARBON DIOXIDE COMPOSITION CONFINED IN A CONTAINER UNDER PRESSURE FROM A NOZZLE THROUGH A SHIELD TO FORM CARBON DIOXIDE SNOW PARTICLES, WHICH METHOD COMPRISES INTRODUCING INTO THE CARBON DIOXIDE BETWEEN AT LEAST ABOUT 2% BUT NOT EXCEEDING 5% BY WEIGHT OF THE COMPOSITION OF AN OILY HYDROCARBON MATERIAL HAVING A LOW SURFACE TENSION AND BEING CAPABLE OF EXISTING IN READILY FLOWABLE STATE AT A TEMPERATURE OF -5*F. AND BEING CAPABLE OF RETAINING ITS OILY CHARACTERISTICS AT A TEMPERATURE OF -135*F., AND DIRECTING THE CARBON DIOXIDE AND THE OILY MATERIAL IN ADMIXTURE THEREWITH THROUGH THE NOZZLE TO FORM CARBON DIOXIDE SNOW PARTICLES IN THE SHIELD WHEREBY THE SNOW PARTICLES AND THE INTERIOR OF THE SHIELD ARE COATED WITH THE OILY MATERIAL TO FORM A PERSISTENT FRICTIONLESS FILM IN THE INTERIOR OF THE SHIELD ADAPTED TO INHIBIT THE GENERATION OF ELECTROSTATIC CHARGES UPON THE FLOW OF SNOW PARTICLES THROUGH THE SHIELD.
References Cited (Backward Citations)
US2020189A
Cited
GB453084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |