US3209128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating mat
Assignee: SMITH GATES CORP
•
Filing: 1962-11-20
•
Granted: 1965-09-28
•
Expires: 1982-11-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Donald M Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:30
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/24; E01C11/26; E01C11/265; F; F24; F24D; F24D13/00; F24D13/02; F24D13/022; F24D13/024; H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
THE COMBINATION IN AN ELECTRICALLY OPERABLE HEATING MAT OF AT LEAST ONE ELONGATED FLEXIBLE HEATING ELEMENT COMPRISING A CORE AND AN INSULATING SHEATH, SAID ELEMENT BEING ARRANGED WITH A PLURALITY OF SIMILAR GENERALLY RECTILINEAR PORTIONS THEREOF IN TRANSVERSELY SPACED PARALLEL AND LONGITUDINALLY EXTENDING RELATIONSHIP, CONNECTING PORTIONS OF SAID ELEMENT BETWEEN AND AT THE ENDS OF SAID FIRST MENTIONED PORTIONS BEING GENERALLY SEMICIRCULAR IN CONFIGURATION AND GENERALLY TRANSVERSE IN EXTENT, A PLURALITY OF FLEXIBLE GROUND WIRES INTERWOVEN ON AND ABOUT SAID HEATING ELEMENT, AT LEAST TWO TRANSVERSELY EXTENDING SPACER MEMBERS EACH COMPRISING FIRST AND SECOND THIN FLAT FLEXIBLE ADHESIVE BEARING TAPES SUBSTANTIALLY WIDER THAN SAID HEATING ELEMENT, SAID SPACER MEMBERS BEING ARRANGED IN LONGITUDINALLY SPACED RELATIONSHIP WITH THEIR TAPES ENVELOPING AND ADHESIVELY ENGAGING SECTIONS OF SAID FIRST MEMTIONED PORTIONS OF SAID HEATING ELEMENT, A PAIR OF INSULATED CONNECTORS SECURED RESPECTIVELY TO END PORTION OF SAID HEATING ELEMENT AND HELD BETWEEN SAID FIRST AND SECOND TAPES OF SAID SPACERS MEMBERS, AND A PAIR OF COLD LEAD WIRES SECURED RESPECTIVELY TO SAID CONNECTORS.
Claim 2
Dependent Claim
170 words
THE COMBINATION IN AN ELECTRICALLY OPERABLE HEATING MAT OF AT LEAST ONE ELONGATED FLEXIBLE HEATING ELEMENT COMPRISING A CORE AND AN INSULATING SHEATH, SAID ELEMENT BEING ARRANGED WITH A PLURALITY OF SIMILAR GENERALLY RECTILINEAR PORTIONS THEREOF IN TRANSVERSELY SPACED PARALLEL AND LONGITUDINALLY EXTENDING RELATIONSHIP, CONNECTING PORTIONS OF SAID ELEMENT BETWEEN AND AT THE ENDS OF SAID FIRST MENTIONED PORTIONS BEING GENERALLY SEMICIRCULAR IN CONFIGURATION AND GENERALLY TRANSVERSE IN EXTENT, A PLURALITY OF FLEXIBLE GROUND WIRES INTERWOVEN ON AND ABOUT SAID HEATING ELEMENT, AT LEAST TWO TRANSVERSELY EXTENDING SPACER MEMBERS EACH COMPRISING FIRST AND SECOND THIN FLAT FLEXIBLE ADHESIVE BEARING TAPES SUBSTANTIALLY WIDER THAN SAID HEATING ELEMENT, SAID SPACER MEMBERS BEING ARRANGED IN LONGITUDINALLY SPACED RELATIONSHIP WITH THEIR TAPES ENVELOPING AND ADHESIVELY ENGAGING SECTIONS OF SAID FIRST MEMTIONED PORTIONS OF SAID HEATING ELEMENT, A PAIR OF INSULATED CONNECTORS SECURED RESPECTIVELY TO END PORTION OF SAID HEATING ELEMENT AND HELD BETWEEN SAID FIRST AND SECOND TAPES OF SAID SPACERS MEMBERS, AND A PAIR OF COLD LEAD WIRES SECURED RESPECTIVELY TO SAID CONNECTORS.
References Cited (Backward Citations)
US303735A
Cited
USRE22763E
Cited
GB393304A
Cited
US2182968A
Cited
FR920487A
Cited
US2529914A
Cited
US2924141A
Cited
GB884296A
Cited
US2997568A
Cited
US3010007A
Cited
US2943289A
Cited
US3005895A
Cited
US3056011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |