Patent US3214567A successfully refreshed from Google Patents.
US3214567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety interlock system for high temperature oven
Assignee: General Electric Co
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Filing: 1963-08-02
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Granted: 1965-10-26
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Expires: 1983-08-02
Abstract
No abstract record available.
Inventors
- 👤 Roy D Chisholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:31
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1951; F; F24; F24C; F24C14/00; F24C14/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
217 words
AN ELECTRIC OVEN COMPRISING AN OVEN CAVITY FORMED BY AN OVEN LINER AND AN ACCESS DOOR, ELECTRIC HEATING ELEMENTS IN HEAT TRANSFER RELATION TO THE OVEN CAVITY, A POWER CIRCUIT WITH A SOURCE OF VOLTAGE FOR CONNECTION TO THE HEATING ELEMENTS, A MANUAL SELECTOR MEANS FOR ARRANGING THE HEATING ELEMENTS IN VARIOUS POWER CIRCUIT COMBINATIONS, A THERMOSTATIC CONTROL MEANS COMBINED IN A LOW VOLTAGE CONTROL CIRCUIT AND COMPRISING A TEMPERATURE SENSER POSITIONED WITHIN THE OVEN CAVITY AND A MANUALLY SETTABLE TEMPERATURE CONTROL MEANS COOPERATING WITH THE SENSER, THE TEMPERATURE CONTROL MEANS HAVING CONTACT MEANS LOCATED IN THE POWER CIRCUIT FOR GOVERNING THE ENERGIZATION OF THE HEATING ELEMENT, LATCHING MEANS FOR SEALING THE OVEN DOOR IN A CLOSED POSITION, A SEQUENCE TIMER MEANS POSITIONED AS AS TO BE OPERATED BY THE DOOR LATCHING MEANS IN THE CLOSED POSITION, A LOCK MEMBER FOR ENGAGING THE LATCHING MEANS IN THE CLOSED POSITION AND PREVENTING THE LATCHING MEANS FROM BEING OPENED, THE TIMER MEANS INCLUDING A FIRST CAMMING MEANS FOR DEACTIVATING THE LOCK MEMBER JUST PRIOR TO THE STOPPING ACTION OF THE TIMER MEANS AND FOR ACTIVATING THE LOCK MEMBER A SHORT TIME INTERVAL AFTER THE TIMER MEANS HAS STARTED BY THE CLOSING OF THE DOOR LATCHING MEANS, THE TIMER MEANS INCLUDING A SECOND CAMMING MEANS THAT COOPERATES WITH A TIMER
Claim 2
Dependent Claim
217 words
AN ELECTRIC OVEN COMPRISING AN OVEN CAVITY FORMED BY AN OVEN LINER AND AN ACCESS DOOR, ELECTRIC HEATING ELEMENTS IN HEAT TRANSFER RELATION TO THE OVEN CAVITY, A POWER CIRCUIT WITH A SOURCE OF VOLTAGE FOR CONNECTION TO THE HEATING ELEMENTS, A MANUAL SELECTOR MEANS FOR ARRANGING THE HEATING ELEMENTS IN VARIOUS POWER CIRCUIT COMBINATIONS, A THERMOSTATIC CONTROL MEANS COMBINED IN A LOW VOLTAGE CONTROL CIRCUIT AND COMPRISING A TEMPERATURE SENSER POSITIONED WITHIN THE OVEN CAVITY AND A MANUALLY SETTABLE TEMPERATURE CONTROL MEANS COOPERATING WITH THE SENSER, THE TEMPERATURE CONTROL MEANS HAVING CONTACT MEANS LOCATED IN THE POWER CIRCUIT FOR GOVERNING THE ENERGIZATION OF THE HEATING ELEMENT, LATCHING MEANS FOR SEALING THE OVEN DOOR IN A CLOSED POSITION, A SEQUENCE TIMER MEANS POSITIONED AS AS TO BE OPERATED BY THE DOOR LATCHING MEANS IN THE CLOSED POSITION, A LOCK MEMBER FOR ENGAGING THE LATCHING MEANS IN THE CLOSED POSITION AND PREVENTING THE LATCHING MEANS FROM BEING OPENED, THE TIMER MEANS INCLUDING A FIRST CAMMING MEANS FOR DEACTIVATING THE LOCK MEMBER JUST PRIOR TO THE STOPPING ACTION OF THE TIMER MEANS AND FOR ACTIVATING THE LOCK MEMBER A SHORT TIME INTERVAL AFTER THE TIMER MEANS HAS STARTED BY THE CLOSING OF THE DOOR LATCHING MEANS, THE TIMER MEANS INCLUDING A SECOND CAMMING MEANS THAT COOPERATES WITH A TIMER
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |