US3214560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction heating device
Assignee: Ohio Crankshaft Co
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Filing: 1963-05-21
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Granted: 1965-10-26
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Expires: 1983-05-21
Abstract
No abstract record available.
Inventors
- 👤 John R Laughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:04
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN APPARATUS FOR LOCATING, WITH RESPECT TO A GENERALLY CIRCULAR HIGH FREQUENCY POWERED INDUCTOR, BOTH A HOLLOW SHEET METAL DOORKNOB SHANK HAVING A CIRCULAR MOUNTING FLANGE AND A HOLLOW KNOB CASING HAVING AN INNER MOUNTING SURFACE MATCHING SAID FLANGE AND AN OPENING FOR RECEIVING SAID SHANK, SAID APPARATUS COMPRISING MEANS FOR CENTERING SAID CASING OPENING WITH RESPECT TO SAID INDUCTOR, MEANS FOR CENTERING SAID MOUNTING FLANGE WITH RESPECT TO SAID INDUCTOR, MEANS FOR FORCING SAID CENTERED MOUNTING FLANGE AGAINST SAID MOUNTING SURFACE, AND CASING CENTERING MEANS INCLUDING A CONICAL SURFACE FOR ALLOWING SLIGHT SWIVEL MOVEMENT OF SAID CASING AROUND SAID CENTERED OPENING SO SAID FLANGE AND SURFACE WILL ASSUME A CONTINUOUS ABUTTING POSTURE.
Claim 2
Independent Claim
113 words
AN APPARATUS FOR LOCATING, WITH RESPECT TO A GENERALLY CIRCULAR HIGH FREQUENCY POWERED INDUCTOR, BOTH A HOLLOW SHEET METAL DOORKNOB SHANK HAVING A CIRCULAR MOUNTING FLANGE AND A HOLLOW KNOB CASING HAVING AN INNER MOUNTING SURFACE MATCHING SAID FLANGE AND AN OPENING FOR RECEIVING SAID SHANK, SAID APPARATUS COMPRISING MEANS FOR CENTERING SAID CASING OPENING WITH RESPECT TO SAID INDUCTOR, MEANS FOR CENTERING SAID MOUNTING FLANGE WITH RESPECT TO SAID INDUCTOR, MEANS FOR FORCING SAID CENTERED MOUNTING FLANGE AGAINST SAID MOUNTING SURFACE, AND CASING CENTERING MEANS INCLUDING A CONICAL SURFACE FOR ALLOWING SLIGHT SWIVEL MOVEMENT OF SAID CASING AROUND SAID CENTERED OPENING SO SAID FLANGE AND SURFACE WILL ASSUME A CONTINUOUS ABUTTING POSTURE.
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) | 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 |