US3223825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric grid floor heating system
Assignee: Individual
•
Filing: 1958-03-21
•
Granted: 1965-12-14
•
Expires: 1978-03-21
Abstract
No abstract record available.
Inventors
- 👤 Chester I Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:17
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/28; E; E01; E01C; E01C11/00; E01C11/24; E01C11/26; E01C11/265; F; F24; F24D; F24D13/00; F24D13/02; F24D13/022; F24D13/024; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN ELECTRIC GRID FLOOR HEATING SYSTEM FOR A REINFORCED CONCRETE FLOOR CONSTRUCTION, COMPRISING: REINFORCING MEANS, SAID REINFORCING MEANS INCLUDING A PLURALITY OF LONGITUDINALLY EXTENDING AND LATERALLY SPACED STEEL REINFORCING RODS; U-SHAPED CONNECTORS FOR OPERATIVELY CONNECTING CONTIGUOUS ENDS OF THE REINFORCING RODS IN A SERIES ELECTRICAL CIRCUIT OF THE REINFORCING RODS; COUPLING MEANS HAVING THREADED INTERENGAGEMENT WITH SAID CONNECTORS AND REINFORCING RODS FOR CONNECTING THE U-SHAPED CONNECTORS TO THE REINFORCING RODS AT THE ENDS THEREOF; AND HIGH-CONDUCTIVITY JUMPERS OPERATIVELY CONNECTED IN PARALLEL WITH CERTAIN OF SAID COUPLING MEANS, WHEREBY CURRENT THROUGH SAID COUPLING MEANS IS REDUCED TO PREVENT LOCALIZED GENERATION FO EXCESSIVELY HEAT, SAID REINFORCING RODS, U-SHAPED CONNECTORS, AND COUPLING MEANS BEING INTEGRALLY EMBEDDED WITHIN CONCRETE, PROVIDING A REINFORCED CONCRETE FLOOR CONSTRUCTION.
Claim 2
Dependent Claim
121 words
AN ELECTRIC GRID FLOOR HEATING SYSTEM FOR A REINFORCED CONCRETE FLOOR CONSTRUCTION, COMPRISING: REINFORCING MEANS, SAID REINFORCING MEANS INCLUDING A PLURALITY OF LONGITUDINALLY EXTENDING AND LATERALLY SPACED STEEL REINFORCING RODS; U-SHAPED CONNECTORS FOR OPERATIVELY CONNECTING CONTIGUOUS ENDS OF THE REINFORCING RODS IN A SERIES ELECTRICAL CIRCUIT OF THE REINFORCING RODS; COUPLING MEANS HAVING THREADED INTERENGAGEMENT WITH SAID CONNECTORS AND REINFORCING RODS FOR CONNECTING THE U-SHAPED CONNECTORS TO THE REINFORCING RODS AT THE ENDS THEREOF; AND HIGH-CONDUCTIVITY JUMPERS OPERATIVELY CONNECTED IN PARALLEL WITH CERTAIN OF SAID COUPLING MEANS, WHEREBY CURRENT THROUGH SAID COUPLING MEANS IS REDUCED TO PREVENT LOCALIZED GENERATION FO EXCESSIVELY HEAT, SAID REINFORCING RODS, U-SHAPED CONNECTORS, AND COUPLING MEANS BEING INTEGRALLY EMBEDDED WITHIN CONCRETE, PROVIDING A REINFORCED CONCRETE FLOOR CONSTRUCTION.
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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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |