US3335261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric hot plate
Assignee: Motors Liquidation Co
•
Filing: 1965-10-12
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Granted: 1967-08-08
•
Expires: 1985-10-12
Abstract
No abstract record available.
Inventors
- 👤 Donald C Siegla
- 👤 Jr Arthur T Bassett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:45
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/68; H05B3/74; H05B3/748
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN AN INFRARED SURFACE HEATING UNIT, THE COMBINATION OF, A REFLECTOR PLATE HAVING A SPIRAL GROOVE FORMED THEREIN THROUGHOUT THE PLANAR EXTENT OF SAID PLATE, AN UPPER UTENSIL SUPPORTING PLATE SUPPORTED BY SAID REFLECTOR PLATE AT THE OUTER PERIPHERAL EDGE THEREOF, SAID UPPER UTENSIL SUPPORTING PLATE BEING SPACED FROM THE GROOVED SURFACE OF SAID REFLECTOR PLATE, AN INFRARED EMISSIVE RESISTANCE ELEMENT LOCATED WITHIN SAID SPIRALLED GROOVE, A PLURALITY OF DISCS LOCATED AT SPACED POINTS ALONG SAID RESISTANCE ELEMENT, AN INFRARED REFLECTIVE SURFACE FORMED IN SAID GROOVE FOR DIRECTING RADIATION FROM SAID RESISTANCE ELEMENT THROUGH SAID UPPER PLATE, SAID DISCS CONTACTING SAID UPPER SUPPORT PLATE AND SAID REFLECTOR PLATE FOR REINFORCING SAID PLATES, AND MEANS FOR ELECTRICALLY INSULATING SAID REFLECTIVE SURFACE FROM SAID SUPPORT DISCS.
Claim 2
Dependent Claim
124 words
IN AN INFRARED SURFACE HEATING UNIT, THE COMBINATION OF, A REFLECTOR PLATE HAVING A SPIRAL GROOVE FORMED THEREIN THROUGHOUT THE PLANAR EXTENT OF SAID PLATE, AN UPPER UTENSIL SUPPORTING PLATE SUPPORTED BY SAID REFLECTOR PLATE AT THE OUTER PERIPHERAL EDGE THEREOF, SAID UPPER UTENSIL SUPPORTING PLATE BEING SPACED FROM THE GROOVED SURFACE OF SAID REFLECTOR PLATE, AN INFRARED EMISSIVE RESISTANCE ELEMENT LOCATED WITHIN SAID SPIRALLED GROOVE, A PLURALITY OF DISCS LOCATED AT SPACED POINTS ALONG SAID RESISTANCE ELEMENT, AN INFRARED REFLECTIVE SURFACE FORMED IN SAID GROOVE FOR DIRECTING RADIATION FROM SAID RESISTANCE ELEMENT THROUGH SAID UPPER PLATE, SAID DISCS CONTACTING SAID UPPER SUPPORT PLATE AND SAID REFLECTOR PLATE FOR REINFORCING SAID PLATES, AND MEANS FOR ELECTRICALLY INSULATING SAID REFLECTIVE SURFACE FROM SAID SUPPORT DISCS.
References Cited (Backward Citations)
US2179934A
Cited
US2913565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |