Patent US3082540A successfully refreshed from Google Patents.
US3082540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair drier
Assignee: Societe de Ventilation et dElectricite Appliquees Velecta
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Filing: 1960-08-11
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Granted: 1963-03-26
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Expires: 1980-08-11
Abstract
No abstract record available.
Inventors
- 👤 Hiltenbrand Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:12
CPC Classifications
G; G05; G05D; G05D22/00; G05D22/02; A; A45; A45D; A45D20/00; A45D20/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
225 words
A HAIR DRYING APPARATUS COMPRISING, IN COMBINATION, A HAIR DRYING HOOD; FIRST PASSAGE MEANS FOR DIRECTING A STREAM OF AMBIENT AIR ALONG A FIRST PATH INTO SAID HOOD; MEANS FOR DIRECTING AIR IN SAID HOOD ONTO THE HAIR TO BE DRIED WHILE SIMULTANEOUSLY HEATING SAID AIR; SECOND PASSAGE MEANS FOR DIRECTING A STREAM OF USED AIR WHICH HAS PASSED THROUGH THE HAIR TO BE DRIED ALONG A SECOND SEPARATE PATH; MEANS FOR CHANGING THE TEMPERATURE OF AT LEAST ONE OF SAID STREAMS UNTIL BOTH ARE AT SUBSTANTIALLY THE SAME TEMPERATURE AT PREDETERMINED PORTIONS OF SAID PATHS WHILE TRANSFERRING HEAT FROM SAID USED AIR TO AT LEAST PART OF SAID STREAM OF AMBIENT AIR ENTERING SAID HOOD; HUMIDITY DETECTING MEANS COOPERATING WITH THE AIR PASSING THROUGH SAID PREDETERMINED PORTIONS OF SAID PATH FOR DETECTING THE HUMIDITY OF THE STREAM OF USED AIR AND THE HUMIDITY OF THE STREAM OF AMBIENT AIR, WHILE BOTH OF SAID STREAMS OF AIR ARE OF SUBSTANTIALLY THE SAME TEMPERATURE SO THAT THE DIFFERENCE BETWEEN THE HUMIDITY OF THE USED AIR AND THAT OF THE AMBIENT AIR MAY BE DETERMINED; AND ADDITIONAL PASSAGE MEANS COMMUNICATING WITH SAID SECOND PASSAGE MEANS AND WITH SAID MEANS FOR DIRECTING AIR IN SAID HOOD ONTO THE HAIR TO BE DRIED FOR RECIRCULATING AT LEAST A PORTION OF SAID USED AIR ONTO THE HAIR TO BE DRIED.
Claim 2
Dependent Claim
225 words
A HAIR DRYING APPARATUS COMPRISING, IN COMBINATION, A HAIR DRYING HOOD; FIRST PASSAGE MEANS FOR DIRECTING A STREAM OF AMBIENT AIR ALONG A FIRST PATH INTO SAID HOOD; MEANS FOR DIRECTING AIR IN SAID HOOD ONTO THE HAIR TO BE DRIED WHILE SIMULTANEOUSLY HEATING SAID AIR; SECOND PASSAGE MEANS FOR DIRECTING A STREAM OF USED AIR WHICH HAS PASSED THROUGH THE HAIR TO BE DRIED ALONG A SECOND SEPARATE PATH; MEANS FOR CHANGING THE TEMPERATURE OF AT LEAST ONE OF SAID STREAMS UNTIL BOTH ARE AT SUBSTANTIALLY THE SAME TEMPERATURE AT PREDETERMINED PORTIONS OF SAID PATHS WHILE TRANSFERRING HEAT FROM SAID USED AIR TO AT LEAST PART OF SAID STREAM OF AMBIENT AIR ENTERING SAID HOOD; HUMIDITY DETECTING MEANS COOPERATING WITH THE AIR PASSING THROUGH SAID PREDETERMINED PORTIONS OF SAID PATH FOR DETECTING THE HUMIDITY OF THE STREAM OF USED AIR AND THE HUMIDITY OF THE STREAM OF AMBIENT AIR, WHILE BOTH OF SAID STREAMS OF AIR ARE OF SUBSTANTIALLY THE SAME TEMPERATURE SO THAT THE DIFFERENCE BETWEEN THE HUMIDITY OF THE USED AIR AND THAT OF THE AMBIENT AIR MAY BE DETERMINED; AND ADDITIONAL PASSAGE MEANS COMMUNICATING WITH SAID SECOND PASSAGE MEANS AND WITH SAID MEANS FOR DIRECTING AIR IN SAID HOOD ONTO THE HAIR TO BE DRIED FOR RECIRCULATING AT LEAST A PORTION OF SAID USED AIR ONTO THE HAIR TO BE DRIED.
References Cited (Backward Citations)
US2643464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |