US3220658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hammermills
Assignee: Lukens General Industries Inc
•
Filing: 1961-12-18
•
Granted: 1965-11-30
•
Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry J Shelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:38
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/02; B02C13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A HAMMERMILL COMPRISING AN OUTER CAGE, A SHAFT ROTATABLY MOUNTED WITHIN SAID CAGE, A PLURALITY OF AXIALLY ALIGNED DRUM-FORMING DISKS MOUNTED ON SAID SHAFT, SAID DISKS COMPRISING A CIRCULAR PLATE WITH AN AXIALLY EXTENDING BOSS, THE BOSS OF ONE DISK BEING IN ABUTTING ENGAGEMENT WITH THE PLATE OF THE NEXT AXIALLY ALIGNED DISK FORMING A DRUM WITH A PLURALITY OF CIRCUMFERENTIAL GROOVES, A PLURALITY OF HAMMER ELEMENTS DISPOSED WITHIN EACH OF SAID GROOVES, RETAINING MEANS FOR SECURING SAID HAMMER ELEMENTS WITHIN SAID GROOVES, STOP MEANS OPERATIVELY ASSOCIATED WITH SAID RETAINING MEANS FOR PREVENTING ROTATIVE MOVEMENT OF SAID HAMMER ELEMENTS WITHIN SAID GROOVES, AND MEANS OPERATIVELY ASSOCIATED WITH SAID HAMMER ELEMENTS FOR CRUSHING A CHARGE OF MATERIAL WHEN SAID SHAFT IS ROTATED.
Claim 2
Dependent Claim
121 words
A HAMMERMILL COMPRISING AN OUTER CAGE, A SHAFT ROTATABLY MOUNTED WITHIN SAID CAGE, A PLURALITY OF AXIALLY ALIGNED DRUM-FORMING DISKS MOUNTED ON SAID SHAFT, SAID DISKS COMPRISING A CIRCULAR PLATE WITH AN AXIALLY EXTENDING BOSS, THE BOSS OF ONE DISK BEING IN ABUTTING ENGAGEMENT WITH THE PLATE OF THE NEXT AXIALLY ALIGNED DISK FORMING A DRUM WITH A PLURALITY OF CIRCUMFERENTIAL GROOVES, A PLURALITY OF HAMMER ELEMENTS DISPOSED WITHIN EACH OF SAID GROOVES, RETAINING MEANS FOR SECURING SAID HAMMER ELEMENTS WITHIN SAID GROOVES, STOP MEANS OPERATIVELY ASSOCIATED WITH SAID RETAINING MEANS FOR PREVENTING ROTATIVE MOVEMENT OF SAID HAMMER ELEMENTS WITHIN SAID GROOVES, AND MEANS OPERATIVELY ASSOCIATED WITH SAID HAMMER ELEMENTS FOR CRUSHING A CHARGE OF MATERIAL WHEN SAID SHAFT IS ROTATED.
References Cited (Backward Citations)
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Cited
US2348916A
Cited
US2862669A
Cited
US3044719A
Cited
US2858082A
Cited
US2986347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |