US3316748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing propping agent
Assignee: Reynolds Metals Co
•
Filing: 1963-10-14
•
Granted: 1967-05-02
•
Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Charles F Lang
- 👤 Joseph F Ritter
- 👤 Vernon D Claiborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:03
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/04; E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/267; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49679; Y10T29/49694
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD OF FACETING, ROUNDING, AND WORK-HARDENING A CAST ALUMINUM PARTICLE, SAID METHOD COMPRISING THE STEPS OF: DISPOSING SAID PARTICLES IN THE PATH OF RADIALLY EXTENDING ROTARY BLADES TERMINATING PROXIMATE TO A REACTION SURFACE WHOSW MAJOR PORTION IS SPACED FROM SAID PATH BY A DISTANCE EXCEEDING THE WIDTH OF SAID PARTICLE, STRIKING SAID PARTICLE WITH A SAID BLADE, ALLOWING SAID PARTICLE, AS A RESULT OF THE FORCE OF ITS IMPACT WITH SAID BLADE, TO TRAVEL FREELY AWAY FROM THE POINT OF SAID IMPACT UNTIL SAID PARTICLE IMPINGES AGAINST SAID REACTION SURFACE, AND REBOUNDING SAID PARTICLE OFF SAID REACTION SURFACE BACK INTO SAID PATH.
Claim 2
Independent Claim
103 words
A METHOD OF FACETING, ROUNDING, AND WORK-HARDENING A CAST ALUMINUM PARTICLE, SAID METHOD COMPRISING THE STEPS OF: DISPOSING SAID PARTICLES IN THE PATH OF RADIALLY EXTENDING ROTARY BLADES TERMINATING PROXIMATE TO A REACTION SURFACE WHOSW MAJOR PORTION IS SPACED FROM SAID PATH BY A DISTANCE EXCEEDING THE WIDTH OF SAID PARTICLE, STRIKING SAID PARTICLE WITH A SAID BLADE, ALLOWING SAID PARTICLE, AS A RESULT OF THE FORCE OF ITS IMPACT WITH SAID BLADE, TO TRAVEL FREELY AWAY FROM THE POINT OF SAID IMPACT UNTIL SAID PARTICLE IMPINGES AGAINST SAID REACTION SURFACE, AND REBOUNDING SAID PARTICLE OFF SAID REACTION SURFACE BACK INTO SAID PATH.
References Cited (Backward Citations)
US406136A
Cited
US996573A
Cited
FR592414A
Cited
US2758360A
Cited
US2816466A
Cited
US2946115A
Cited
US3150838A
Cited
US2963772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |