US2832545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supersonic jet grinding means and method
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-03-03
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Granted: 1958-04-29
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Expires: 1975-03-03
Abstract
No abstract record available.
Inventors
- 👤 Segraves William Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:46
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A METHOD OF GRINDING HARD, BRITTLE, GRANULAR MATERIAL INTO FINER PARTICLE SIZE, WHICH COMPRISES INJECTING A SUPERSONIC VELOCITY JET OF GASIFORM FLUID INTO A RELATIVELY QUIESCENT ZONE WHEREIN A MASS OF MATERIAL TO BE GROUND IS IN FLUIDIZED SUSPENSION, PASSING THE JET IMMEDIATELY INTO A CONFINED ZONE OF SUBSTANTIALLY LARGER CROSS-SECTION THAN THE NOZZLE OUTLET WHEREBY A SUBSTANTIAL DROP IN PRESSURE TAKES PLACE, THEREBY CAUSING SAID MATERIAL TO BE DRAWN INTO THE PATH OF SAID STREAM AND INTO SAID CONFINED ZONE, AND SUDDENLY REDUCING THE VELOCITY OF SAID STREAM THROUGH THE SONIC BARRIER WITHIN SAID CONFINED ZONE TO CAUSE SHOCK AND COLLISION TO PARTICLES OF SAID MATERIAL AND THEREBY BREAK SAID MATERIAL INTO SMALLER PARTICLES.
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) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |