US3314539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen apparatus for classifying materials
Assignee: Individual
•
Filing: 1964-05-14
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Granted: 1967-04-18
•
Expires: 1984-05-14
Abstract
No abstract record available.
Inventors
- 👤 Earl R Hitchman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:48
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/28; B07B1/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
A VIBRATING SCREEN CLASSIFIER COMPRISING (A) A SUBSTANTIALLY HORIZONTAL FRAME, (B) VIBRATOR MEANS MOUNTED ON THE FRAME, (C) A PLURALITY OF VERTICALLY DISPLACED INCLINED SCREENS SUPPORTED AT THEIR INFEED ENDS BY THE VIBRATOR MEANS FOR VIBRATING MOVEMENT RELATIVE TO THE FRAME SUBSTANTIALLY IN THE PLANES OF THE SCREENS, (D) A PLURALITY OF VERTICALLY DISPOSED SUPPORT RODS SPACED APART LONGITUDINALLY WITH RESPECT TO THE FRAME AND DISPOSED ADJACENT THE SIDES OF THE FRAME AND SCREENS ADJACENT THE OUTFEED ENDS OF THE LATTER,
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |