Patent US3249970A successfully refreshed from Google Patents.
US3249970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for controlled addition of one ingredient to a mixture of foundry sand ingredients
Assignee: Hartley Controls Corp
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Filing: 1961-12-13
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Granted: 1966-05-10
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Expires: 1981-12-13
Abstract
No abstract record available.
Inventors
- 👤 Hartley Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:09
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/04; B22C5/0409; B22C5/0472
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
A DEVICE FOR CONTROLLING THE ADDITION OF MOISTURE TO FINELY DIVIDED MATERIAL IN RELATION TO ITS TEMPERATURE, SAID DEVICE INCLUDING A TEMPERATURE CIRCUIT AND A MOISTURE CIRCUIT, EACH HAVING AN ELECTROMAGNETIC COIL, MEANS FOR ESTABLISHING CURRENT FLOW IN THE TEMPERATURE CIRCUIT AND ITS COIL GENERALLY RELATED TO THE TEMPERATURE OF THE MATERIAL, MEANS FOR ESTABLISHING CURRENT FLOW IN THE MOISTURE CIRCUIT AND ITS COIL GENERALLY RELATED TO THE MOISTURE OF THE MATERIAL, INTEGRATING ARMATURE MEANS ASSOCIATED WITH SAID COILS AND RESPONSIVE TO THE CURRENT FLOW IN THE RESPECTIVE CIRCUITS AND COILS AND CONTROL MEANS SUBJECT TO SAID ARMATURE MEANS, THE ACTUATION OF WHICH CONTROL MEANS IS A FUNCTION OF MOISTURE IN RELATION TO TEMPERATURE, AND MEANS FOR SUPPLYING WATER TO SAID MATERIAL SUBJECT TO SAID CONTROL MEANS FOR DETERMINING THE AMOUNT OF WATER SUPPLIED.
Claim 2
Independent Claim
134 words
A DEVICE FOR CONTROLLING THE ADDITION OF MOISTURE TO FINELY DIVIDED MATERIAL IN RELATION TO ITS TEMPERATURE, SAID DEVICE INCLUDING A TEMPERATURE CIRCUIT AND A MOISTURE CIRCUIT, EACH HAVING AN ELECTROMAGNETIC COIL, MEANS FOR ESTABLISHING CURRENT FLOW IN THE TEMPERATURE CIRCUIT AND ITS COIL GENERALLY RELATED TO THE TEMPERATURE OF THE MATERIAL, MEANS FOR ESTABLISHING CURRENT FLOW IN THE MOISTURE CIRCUIT AND ITS COIL GENERALLY RELATED TO THE MOISTURE OF THE MATERIAL, INTEGRATING ARMATURE MEANS ASSOCIATED WITH SAID COILS AND RESPONSIVE TO THE CURRENT FLOW IN THE RESPECTIVE CIRCUITS AND COILS AND CONTROL MEANS SUBJECT TO SAID ARMATURE MEANS, THE ACTUATION OF WHICH CONTROL MEANS IS A FUNCTION OF MOISTURE IN RELATION TO TEMPERATURE, AND MEANS FOR SUPPLYING WATER TO SAID MATERIAL SUBJECT TO SAID CONTROL MEANS FOR DETERMINING THE AMOUNT OF WATER SUPPLIED.
Claim 3
Dependent Claim
167 words
APPARATUS FOR CONTROL OF THE LEVEL OF LIQUID IN A TANK HAVING A SOURCE OF LIQUID, A VALVE THEREFOR AND VALVE CONTROL MEANS, SAID APPARATUS COMPRISING AN ARMATURE, THE POSITION OF WHICH WILL DETERMINE THE OPERATION OF SAID VALVE CONTROL MEANS, A COIL ACTING ON SAID ARMATURE, A PROBE IN SAID TANK, A SOURCE OF VOLTAGE, AND AN ELECTRIC CIRCUIT INTERCONNECTING SAID SOURCE, COIL AND PROBE WHEREBY CURRENT FLOW THROUGH SAID COIL WILL ACTUATE SAID ARMATURE ACCORDING TO THE LEVEL OF LIQUID IN THE TANK AS MEASURED BY THE PROBE, AND MEANS FOR VARYING THE VOLTAGE OF SAID SOURCE TO CHANGE THE VALUE OF CURRENT AT WHICH THE COIL WILL ACTUATE THE ARMATURE TO DETERMINE THE LIQUID LEVEL AT WHICH THE SAID VALVE CONTROL MEANS WILL BE ACTUATED, A SECOND COIL ACTING ON SAID ARMATURE AND A SECOND SOURCE OF VARIABLE VOLTAGE FOR SAID SECOND COIL, THE LEVEL OF WHICH WILL ALSO CHANGE THE VALUE OF CURRENT AT WHICH THE COIL FIRST MENTIONED WILL ACTUATE THE ARMATURE.
Claim 4
Dependent Claim
167 words
APPARATUS FOR CONTROL OF THE LEVEL OF LIQUID IN A TANK HAVING A SOURCE OF LIQUID, A VALVE THEREFOR AND VALVE CONTROL MEANS, SAID APPARATUS COMPRISING AN ARMATURE, THE POSITION OF WHICH WILL DETERMINE THE OPERATION OF SAID VALVE CONTROL MEANS, A COIL ACTING ON SAID ARMATURE, A PROBE IN SAID TANK, A SOURCE OF VOLTAGE, AND AN ELECTRIC CIRCUIT INTERCONNECTING SAID SOURCE, COIL AND PROBE WHEREBY CURRENT FLOW THROUGH SAID COIL WILL ACTUATE SAID ARMATURE ACCORDING TO THE LEVEL OF LIQUID IN THE TANK AS MEASURED BY THE PROBE, AND MEANS FOR VARYING THE VOLTAGE OF SAID SOURCE TO CHANGE THE VALUE OF CURRENT AT WHICH THE COIL WILL ACTUATE THE ARMATURE TO DETERMINE THE LIQUID LEVEL AT WHICH THE SAID VALVE CONTROL MEANS WILL BE ACTUATED, A SECOND COIL ACTING ON SAID ARMATURE AND A SECOND SOURCE OF VARIABLE VOLTAGE FOR SAID SECOND COIL, THE LEVEL OF WHICH WILL ALSO CHANGE THE VALUE OF CURRENT AT WHICH THE COIL FIRST MENTIONED WILL ACTUATE THE ARMATURE.
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |