US3341978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock tumbling device
Assignee: Individual
•
Filing: 1965-01-13
•
Granted: 1967-09-19
•
Expires: 1985-01-13
Abstract
No abstract record available.
Inventors
- 👤 Gerald J Carstens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:41
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A ROCK POLISHING MACHINE INCLUDING AN UPWARDLY OPEN RECEPTACLE ADAPTED TO CONTAIN A BED OF ABRASIVE GRIT AND ROCK-LIKE MATERIAL THEREIN, SAID RECEPTACLE HAVING FORWARD, BOTTOM AND REAR WALLS FORMED IN A GENERALLY UPWARDLY OPEN U-SHAPE, MEANS RESILIENTLY SUPPORTING SAID RECEPTACLE FOR LIMITED ROCKING MOVEMENT, SUPPORT MEANS EXTENDING UPWARDLY ABOVE THE OPEN TOP OF THE RECEPTACLE FROM THE REAR WALL OF SAID RECEPTACLE, AND A PULSATING VIBRATOR POSITIONED ON SAID SUPPORT MEANS, SAID VIBRATOR
Claim 2
Dependent Claim
74 words
A ROCK POLISHING MACHINE INCLUDING AN UPWARDLY OPEN RECEPTACLE ADAPTED TO CONTAIN A BED OF ABRASIVE GRIT AND ROCK-LIKE MATERIAL THEREIN, SAID RECEPTACLE HAVING FORWARD, BOTTOM AND REAR WALLS FORMED IN A GENERALLY UPWARDLY OPEN U-SHAPE, MEANS RESILIENTLY SUPPORTING SAID RECEPTACLE FOR LIMITED ROCKING MOVEMENT, SUPPORT MEANS EXTENDING UPWARDLY ABOVE THE OPEN TOP OF THE RECEPTACLE FROM THE REAR WALL OF SAID RECEPTACLE, AND A PULSATING VIBRATOR POSITIONED ON SAID SUPPORT MEANS, SAID VIBRATOR
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |