Patent US3319226A successfully refreshed from Google Patents.
US3095492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled resistance spot heating device
Assignee: Northrop Grumman Corp
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Filing: 1961-12-26
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Granted: 1963-06-25
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Expires: 1981-12-26
Abstract
No abstract record available.
Inventors
- 👤 Gaiennie Bernerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:28
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN ELECTRIC HEATING UNIT COMPRISING: A BODY PORTION GENERALLY OF CUBICAL CONFIGURATION HAVING OPPOSED END FACES AND BEING FABRICATED OF AN ELECTRIC INSULATING MATERIAL; STRIP-LIKE ELECTRIC HEATING ELEMENT INCLUDING A PORTION INTERMEDIATE THE ENDS THEREOF OF REDUCED CROSSSECTIONAL AREA; A PAIR OF ELECTRIC CONDUCTING CYLINDRICAL MEMBERS ROTATABLY MOUNTED IN OPPOSED RELATION ADJACENT ONE OF SAID END FACES OF SAID BODY PORTION; THE ENDS OF SAID HEATING ELEMENT BEING RESPECTIVELY SECURED TO SAID CYLINDRICAL MEMBERS WITH THE PORTION OF SAID HEATING ELEMENT OF REDUCED CROSS-SECTIONAL AREA BEING IN FULL CONTACT WITH THE OTHER ONE OF SAID END FACES; AND A PAIR OF HANDLES ONE OF WHICH IS FIXEDLY SECURED TO A RESPECTIVE CYLINDRICAL
Claim 2
Dependent Claim
112 words
AN ELECTRIC HEATING UNIT COMPRISING: A BODY PORTION GENERALLY OF CUBICAL CONFIGURATION HAVING OPPOSED END FACES AND BEING FABRICATED OF AN ELECTRIC INSULATING MATERIAL; STRIP-LIKE ELECTRIC HEATING ELEMENT INCLUDING A PORTION INTERMEDIATE THE ENDS THEREOF OF REDUCED CROSSSECTIONAL AREA; A PAIR OF ELECTRIC CONDUCTING CYLINDRICAL MEMBERS ROTATABLY MOUNTED IN OPPOSED RELATION ADJACENT ONE OF SAID END FACES OF SAID BODY PORTION; THE ENDS OF SAID HEATING ELEMENT BEING RESPECTIVELY SECURED TO SAID CYLINDRICAL MEMBERS WITH THE PORTION OF SAID HEATING ELEMENT OF REDUCED CROSS-SECTIONAL AREA BEING IN FULL CONTACT WITH THE OTHER ONE OF SAID END FACES; AND A PAIR OF HANDLES ONE OF WHICH IS FIXEDLY SECURED TO A RESPECTIVE CYLINDRICAL
References Cited (Backward Citations)
US1954061A
Cited
FR787065A
Cited
CH243985A
Cited
US2541214A
Cited
US2596327A
Cited
FR1035129A
Cited
US2701835A
Cited
GB810742A
Cited
US3005898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |