US3080056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry concentrator
Assignee: Individual
•
Filing: 1960-11-29
•
Granted: 1963-03-05
•
Expires: 1980-11-29
Abstract
No abstract record available.
Inventors
- 👤 Lester G Fernstrom
- 👤 The First National Ban Chicago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:15
CPC Classifications
B; B03; B03B; B03B4/00; B03B4/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A DRY CONCENTRATOR, A GENERALLY HORIZONTALLY DISPOSED SEPARATING TABLE ADAPTED TO BE LONGITUDINALLY RECIPROCATED, SAID TABLE HAVING A HEAD END AND A FOOT END, MEANS FOR INCLINING SAID TABLE TO THE HORIZONTAL ALONG A LONGITUDINAL AXIS SO AS TO ESTABLISH A LOWER SIDE AND AN UPPER SIDE THEREOF, AN AIR PERMEABLE DECK ON SAID TABLE, MEANS TO SUPPLY AIR UNDER PRESSURE BENEATH SAID DECK, A PLURALITY OF RIFFLES MOUNTED ON SAID DECK AND EXTENDING LONGITUDINALLY OF SAID TABLE, SAID RIFFLES BEING LATERALLY SPACED A PREDETERMINED DISTANCE APART ON SAID DECK, EACH OF SAID RIFFLES HAVING AN UPPER SURFACE BEVELLED SUCH THAT SAID SURFACES LIE IN GENERALLY HORIZONTAL PLANES WHEN SAID TABLE IS INCLINED.
Claim 2
Dependent Claim
114 words
IN A DRY CONCENTRATOR, A GENERALLY HORIZONTALLY DISPOSED SEPARATING TABLE ADAPTED TO BE LONGITUDINALLY RECIPROCATED, SAID TABLE HAVING A HEAD END AND A FOOT END, MEANS FOR INCLINING SAID TABLE TO THE HORIZONTAL ALONG A LONGITUDINAL AXIS SO AS TO ESTABLISH A LOWER SIDE AND AN UPPER SIDE THEREOF, AN AIR PERMEABLE DECK ON SAID TABLE, MEANS TO SUPPLY AIR UNDER PRESSURE BENEATH SAID DECK, A PLURALITY OF RIFFLES MOUNTED ON SAID DECK AND EXTENDING LONGITUDINALLY OF SAID TABLE, SAID RIFFLES BEING LATERALLY SPACED A PREDETERMINED DISTANCE APART ON SAID DECK, EACH OF SAID RIFFLES HAVING AN UPPER SURFACE BEVELLED SUCH THAT SAID SURFACES LIE IN GENERALLY HORIZONTAL PLANES WHEN SAID TABLE IS INCLINED.
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) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |