Patent US3626641A successfully refreshed from Google Patents.
US3626641A
Expired / Lapsed
US
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Continuous cleaning apparatus
Assignee: Pangborn Corp
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Filing: 1969-08-13
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Granted: 1971-12-14
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Expires: 1989-08-13
Abstract
Abstract A CONTINUOUS CLEANING APPARATUS COMPRISES A ROTATING BARREL OPEN AT BOTH ENDS AND MADE IN A SKELETAL FORM WITH LONGITUDINAL PERIPHERAL PARTS SUPPORT SLATS FOR PERMITTING TREATING MEDIA TO PASS THROUGH THE SLATS AND CONTACT THE PARTS. SPACING MEANS MOVE THE PARTS IN THE BARREL AND MAINTAIN THEM SPACED FROM EACH OTHER. THE SPACING MEANS ARE DRIVEN IN A FORWARD STROKE AND A RETURN STROKE BY RECIPROACHING MEANS DURING EACH REVOLUTION OF THE BARREL.
Inventors
- 👤 George W Powell
- 👤 Willard J Harper
- 👤 James H Carpenter Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:28
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/08; B24C3/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |