US3216557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeder control for batch weighing
Assignee: Rex Chainbelt Inc
•
Filing: 1961-07-06
•
Granted: 1965-11-09
•
Expires: 1981-07-06
Abstract
No abstract record available.
Inventors
- 👤 John M Morris
- 👤 Robley M Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:42
CPC Classifications
B; B65; B65B; B65B57/00; B65B57/10; B65B57/14; B65B1/00; B65B1/04; B65B1/08; G; G01; G01G; G01G13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A VIBRATORY FEEDER, IN COMBINATION, A VIBRATORY FEEDER TROUGH, CUSHIONING MEANS SUPPORTING THE TROUGH, AN EXCITER MEMBER, A SHAFT CARRYING ECCENTRIC WEIGHTS JOURNALED IN THE EXCITER MEMBER, MEANS FOR ROTATING THE SHAFT AT A GENERALLY CONSTANT SPEED, RESILIENT MEANS INCLUDING AT LEAST ONE AIR CHAMBER SERVING AS A SPRING COUPLING THE EXCITER MEMBER TO THE FEEDER TROUGH, A SECOND AIR CHAMBER, CONDUIT MEANS CONNECTING SAID CHAMBERS, A FIRST AND SECOND VALVE IN SAID CONDUIT MEANS, EACH OF SAID VALVES BEING SELECTIVELY OPERABLE AT A FULLY OPEN POSITION AND A SUBSTANTIALLY CLOSED POSITION, A MANUALLY ADJUSTABLE VALVE MEANS, SAID FIRST VALVE AND SAID ADJUSTABLE VALVE MEANS BEING ARRANGED IN SERIES IN THE CONDUIT MEANS CONNECTING THE CHAMBERS, SAID SECOND VALVE
Claim 2
Dependent Claim
120 words
IN A VIBRATORY FEEDER, IN COMBINATION, A VIBRATORY FEEDER TROUGH, CUSHIONING MEANS SUPPORTING THE TROUGH, AN EXCITER MEMBER, A SHAFT CARRYING ECCENTRIC WEIGHTS JOURNALED IN THE EXCITER MEMBER, MEANS FOR ROTATING THE SHAFT AT A GENERALLY CONSTANT SPEED, RESILIENT MEANS INCLUDING AT LEAST ONE AIR CHAMBER SERVING AS A SPRING COUPLING THE EXCITER MEMBER TO THE FEEDER TROUGH, A SECOND AIR CHAMBER, CONDUIT MEANS CONNECTING SAID CHAMBERS, A FIRST AND SECOND VALVE IN SAID CONDUIT MEANS, EACH OF SAID VALVES BEING SELECTIVELY OPERABLE AT A FULLY OPEN POSITION AND A SUBSTANTIALLY CLOSED POSITION, A MANUALLY ADJUSTABLE VALVE MEANS, SAID FIRST VALVE AND SAID ADJUSTABLE VALVE MEANS BEING ARRANGED IN SERIES IN THE CONDUIT MEANS CONNECTING THE CHAMBERS, SAID SECOND VALVE
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |