Patent US3341136A successfully refreshed from Google Patents.
US3341136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyratory grinder
Assignee: Lapp Insulator Co LLC
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Filing: 1965-08-16
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Granted: 1967-09-12
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Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Stettinius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:11
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN A GYRATORY BALL MILL HAVING A GRINDING CHAMBER CONTAINING A CHARGE OF GRINDING PEBBLES AND DRIVE MEANS CONNECTED TO SAID CHAMBER FOR DRIVING SAID CHAMBER IN A GYRATORY MOTION IN A HORIZONTAL PLANE, THE IMPROVEMENT COMPRISING: A PLURALITY OF ROD MEMBERS EXTENDING RIGIDLY WITHIN SAID CHAMBER, SAID RODS BEING SPACED THROUGHOUT
Claim 2
Dependent Claim
52 words
IN A GYRATORY BALL MILL HAVING A GRINDING CHAMBER CONTAINING A CHARGE OF GRINDING PEBBLES AND DRIVE MEANS CONNECTED TO SAID CHAMBER FOR DRIVING SAID CHAMBER IN A GYRATORY MOTION IN A HORIZONTAL PLANE, THE IMPROVEMENT COMPRISING: A PLURALITY OF ROD MEMBERS EXTENDING RIGIDLY WITHIN SAID CHAMBER, SAID RODS BEING SPACED THROUGHOUT
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |