Patent US1902213A successfully refreshed from Google Patents.
Patent US3107820A successfully refreshed from Google Patents.
US3107820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticipatory device for filling hoppers
Assignee: Cutler Hammer Inc
•
Filing: 1961-08-31
•
Granted: 1963-10-22
•
Expires: 1981-08-31
Abstract
No abstract record available.
Inventors
- 👤 Russell C Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:42
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/06; G05D7/0605
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN ANTICIPATORY DEVICE COMPRISING A LINEAR VOLTAGE DIFFERENTIAL TRANSFORMER HAVING A CORE, A PRIMARY COIL AND SECONDARY COILS, A CONTROL MEANS, A DRIVE SYSTEM FOR PERFORMING AN OPERATION HAVING A TERMINATION POINT WHEREIN THE VELOCITY OF SAID DRIVE SYSTEM IS CONTROLLED BY SAID CONTROL MEANS, A CAM ACTUATED IN PROPORTION TO THE PROGRESS OF SAID DRIVE SYSTEM, LINKAGE MEANS BETWEEN SAID CAM AND SAID CORE FOR MOVING SAID CORE IN RELATIVE RELATIONSHIP TO SAID COILS, AN ALTERNATING CURRENT SOURCE CONNECTED ACROSS SAID CONTROL MEANS AND SAID PRIMARY COIL OF SAID DIFFERENTIAL TRANSFORMER, AND A MEANS FOR SUMMING A SIGNAL FROM SAID CONTROL MEANS AND A SIGNAL FROM SAID SECONDARY COILS TO PRODUCE A RESULTANT SIGNAL, WHEREBY SAID RESULTANT SIGNAL IDICATES THE INTERVAL OF TIME REMAINING BEFORE SAID TERMINATION POINT.
Claim 2
Dependent Claim
129 words
AN ANTICIPATORY DEVICE COMPRISING A LINEAR VOLTAGE DIFFERENTIAL TRANSFORMER HAVING A CORE, A PRIMARY COIL AND SECONDARY COILS, A CONTROL MEANS, A DRIVE SYSTEM FOR PERFORMING AN OPERATION HAVING A TERMINATION POINT WHEREIN THE VELOCITY OF SAID DRIVE SYSTEM IS CONTROLLED BY SAID CONTROL MEANS, A CAM ACTUATED IN PROPORTION TO THE PROGRESS OF SAID DRIVE SYSTEM, LINKAGE MEANS BETWEEN SAID CAM AND SAID CORE FOR MOVING SAID CORE IN RELATIVE RELATIONSHIP TO SAID COILS, AN ALTERNATING CURRENT SOURCE CONNECTED ACROSS SAID CONTROL MEANS AND SAID PRIMARY COIL OF SAID DIFFERENTIAL TRANSFORMER, AND A MEANS FOR SUMMING A SIGNAL FROM SAID CONTROL MEANS AND A SIGNAL FROM SAID SECONDARY COILS TO PRODUCE A RESULTANT SIGNAL, WHEREBY SAID RESULTANT SIGNAL IDICATES THE INTERVAL OF TIME REMAINING BEFORE SAID TERMINATION POINT.
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) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |