Patent US3295774A successfully refreshed from Google Patents.
US3295774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attrition mill apparatus
Assignee: Sprout Waldron and Co Inc
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Filing: 1964-05-07
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Granted: 1967-01-03
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Expires: 1984-05-07
Abstract
No abstract record available.
Inventors
- 👤 Fisher Chester Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:06
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN ATTRITION MILL APPARATUS CHARACTERIZED BY A CASING DEFINING A CHAMBER THEREIN, A ROTATABLE ATTRITION DISC IN SAID CHAMBER SECURED TO A SHAFT ROTATABLY MOUNTED WITHIN SAID CASING, A NON-ROTATABLE ATTRITION DISC MOUNTED IN SAID CHAMBER FOR AXIAL MOVEMENT RELATIVE TO SAID CASING, AND MEANS ON SAID CASING FOR AXIALLY POSITIONING SAID NONROTATABLE DISC INCLUDING A HYDRAULIC CYLINDER-AND-PISTON ASSEMBLY, THE IMPROVEMENT COMPRISING SELECTIVELY ADJUSTABLE STOP MEANS FOR SETTING SAID NON-ROTATABLE ATTRITION
Claim 2
Dependent Claim
71 words
IN ATTRITION MILL APPARATUS CHARACTERIZED BY A CASING DEFINING A CHAMBER THEREIN, A ROTATABLE ATTRITION DISC IN SAID CHAMBER SECURED TO A SHAFT ROTATABLY MOUNTED WITHIN SAID CASING, A NON-ROTATABLE ATTRITION DISC MOUNTED IN SAID CHAMBER FOR AXIAL MOVEMENT RELATIVE TO SAID CASING, AND MEANS ON SAID CASING FOR AXIALLY POSITIONING SAID NONROTATABLE DISC INCLUDING A HYDRAULIC CYLINDER-AND-PISTON ASSEMBLY, THE IMPROVEMENT COMPRISING SELECTIVELY ADJUSTABLE STOP MEANS FOR SETTING SAID NON-ROTATABLE ATTRITION
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |