Patent US3362740A successfully refreshed from Google Patents.
US3201568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating- unit with embedded tubular element
Assignee: —
•
Filing: —
•
Granted: 1965-08-17
•
Expires: 1982-08-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:29
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02; H05B3/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN ELECTRIC HEATER COMPRISING IN COMBINATION, AN ELONGATED RESISTOR, A THERMALLY CONDUCTIVE TUBE ENCLOSING THE RESISTOR AND FORMED WITH LINEAR SIDES ANDA LATERAL BASE CONNECTING THE SIDES, AN ELECTRICALLY INSULATIVE MATERIAL SURROUNDING THE ESISTOR WITHIN THE TUBE, AN ELONGATED ONE-PIECE RETAINER BAR FOR THE TUBE HAVING A PAIR OF LINEAR ELONGATED AXIALLY EXTENDING HOLES THERETHROUGH FOR CONTAINING THE SIDES OF THE TUBE, SAID BAR HAVING A RECESS AT ONE END OPAENING LINEARLY FROM THE BAR AND CONTAINING THE BASE OF SAID TUBE, AND A CLOSE FITTING HEAT CONDUCTING PLUG IN SAID RECESS HAVING AN AXIALLY FACING CONCAVE RECESS PROVIDING A SURFACE FOR BEING IN SURFACE-TO-SURFACE ENGAGEMENT WITH THE TUBE TO BE IN HEAT CONDUCTIVE RELATIONSHIP WITH THE BASE OF SAID TUBE.
Claim 2
Dependent Claim
121 words
AN ELECTRIC HEATER COMPRISING IN COMBINATION, AN ELONGATED RESISTOR, A THERMALLY CONDUCTIVE TUBE ENCLOSING THE RESISTOR AND FORMED WITH LINEAR SIDES ANDA LATERAL BASE CONNECTING THE SIDES, AN ELECTRICALLY INSULATIVE MATERIAL SURROUNDING THE ESISTOR WITHIN THE TUBE, AN ELONGATED ONE-PIECE RETAINER BAR FOR THE TUBE HAVING A PAIR OF LINEAR ELONGATED AXIALLY EXTENDING HOLES THERETHROUGH FOR CONTAINING THE SIDES OF THE TUBE, SAID BAR HAVING A RECESS AT ONE END OPAENING LINEARLY FROM THE BAR AND CONTAINING THE BASE OF SAID TUBE, AND A CLOSE FITTING HEAT CONDUCTING PLUG IN SAID RECESS HAVING AN AXIALLY FACING CONCAVE RECESS PROVIDING A SURFACE FOR BEING IN SURFACE-TO-SURFACE ENGAGEMENT WITH THE TUBE TO BE IN HEAT CONDUCTIVE RELATIONSHIP WITH THE BASE OF SAID TUBE.
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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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |