Patent US3223827A successfully refreshed from Google Patents.
US3223827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric convection heater
Assignee: Individual
•
Filing: 1962-08-01
•
Granted: 1965-12-14
•
Expires: 1982-08-01
Abstract
No abstract record available.
Inventors
- 👤 Sr Russell A Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:57
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A SPACE HEATER OF THE CONVECTION FLOW TYPE, AN ELONGATED ELECTRIC HEATING ELEMENT, A HOUSING DEFINING A PASSAGE AT LEAST PARTIALLY SURROUNDING SAID HEATING ELEMENT TO PROVIDE A CONVECTION FLOW OF GAS AROUND SAID ELEMENT, AN ELONGATED COIL-LIKE BODY OF RADIANT HEAT-ABSORBING MATERIAL HAVING ANGULAR SPACED APART HEAT DIFFUSING CONVOLUTIONS AND POSITIONED IN GENERALLY PARALLEL RELATION ABOVE SAID ELEMENT AND WITHIN SAID PASSAGE, AND SAID BODY BEING POSITIONED IN ADJACENT HEAT-ABSORBING SPACED RELATION TO SAID HEATING ELEMENT TO ABSORB HEAT OF VARYING INTENSITY FROM ALONG THE LENGTH OF SAID ELEMENT AND DIFFUSE THE HEAT IN ALL DIRECTIONS INCLUDING BETWEEN AND ABOVE SAID DIFFUSING CONVOLUTIONS AND FROM THE SAME INTO A UNIFORM CURTAIN EQUIVALENT TO THE EFFECTIVE LENGTH OF SAID ELEMENT FOR EXCHANGE BACK TO THE ABMIENT ATMOSPHERE.
Claim 2
Dependent Claim
128 words
IN A SPACE HEATER OF THE CONVECTION FLOW TYPE, AN ELONGATED ELECTRIC HEATING ELEMENT, A HOUSING DEFINING A PASSAGE AT LEAST PARTIALLY SURROUNDING SAID HEATING ELEMENT TO PROVIDE A CONVECTION FLOW OF GAS AROUND SAID ELEMENT, AN ELONGATED COIL-LIKE BODY OF RADIANT HEAT-ABSORBING MATERIAL HAVING ANGULAR SPACED APART HEAT DIFFUSING CONVOLUTIONS AND POSITIONED IN GENERALLY PARALLEL RELATION ABOVE SAID ELEMENT AND WITHIN SAID PASSAGE, AND SAID BODY BEING POSITIONED IN ADJACENT HEAT-ABSORBING SPACED RELATION TO SAID HEATING ELEMENT TO ABSORB HEAT OF VARYING INTENSITY FROM ALONG THE LENGTH OF SAID ELEMENT AND DIFFUSE THE HEAT IN ALL DIRECTIONS INCLUDING BETWEEN AND ABOVE SAID DIFFUSING CONVOLUTIONS AND FROM THE SAME INTO A UNIFORM CURTAIN EQUIVALENT TO THE EFFECTIVE LENGTH OF SAID ELEMENT FOR EXCHANGE BACK TO THE ABMIENT ATMOSPHERE.
References Cited (Backward Citations)
US1706846A
Cited
US1713013A
Cited
US1923083A
Cited
US2544183A
Cited
US2954456A
Cited
US2944138A
Cited
US2938101A
Cited
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 |