US3213859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for curling hair by suction
Assignee: Gillette Co LLC
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Filing: 1963-03-01
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Granted: 1965-10-26
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Expires: 1983-03-01
Abstract
No abstract record available.
Inventors
- 👤 Louis R Mizell
- 👤 Charles G Tewksbury
- 👤 John P Vitello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:18
CPC Classifications
A; A45; A45D; A45D6/00; A45D6/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A CURLER FOR HAIR ADAPTED TO BE DETACHABLY SECURED IN AN AIR STREAM TO PACK A TRESS OF HAIR THEREIN BY AIR PRESSURE COMPRISING A RECEPTACLE HAVING A MOUTH THROUGH WHICH A HAIR TRESS MAY BE PASSED, AND A PORTION FORMING A HAIR ENCLOSING BODY PORTION AGAINST THE INNER SURFACE OF WHICH THE TRESS OF HAIR MAY BE PACKED UNDER PRESSURE IN CONVOLUTIONS OF A SIZE AND SHAPE SUITABLE FOR CURLING, SAID MOUTH HAVING AW DIAMETER OF LESS THAN ONE-HALF OF THE DIAMETER OF SAID BODY PORTION, SAID BODY PORTION BEING PROVIDED WITH APERTURES TO PERMIT FREE AIR ESCAPE THEREFROM FOR AT LEAST THE MAJOR PART OF ITS LENGTH, IN WHICH 1, THE TOTAL AREA OF THE MOUTH IN SQUARE INCHES AT ITS MOST NUMBER OF SAID APERTURES IS SUCH THAT THE RATE SIZE AND NUMBER OF SAID APERTURES IS SUCH THAT THE RATE OF FLOW OF AIR THERETHROUGH, MEASURED IN CUBIC FEET PER MINUTE AT A PRESSURE DROP ACROSS THE APERTURES OF ONEHALF INCH OF WATER, HAS A VALUE OF LEAST AS GREAT AS E1 COMPUTED AS FOLLOWS:
Claim 2
Dependent Claim
179 words
A CURLER FOR HAIR ADAPTED TO BE DETACHABLY SECURED IN AN AIR STREAM TO PACK A TRESS OF HAIR THEREIN BY AIR PRESSURE COMPRISING A RECEPTACLE HAVING A MOUTH THROUGH WHICH A HAIR TRESS MAY BE PASSED, AND A PORTION FORMING A HAIR ENCLOSING BODY PORTION AGAINST THE INNER SURFACE OF WHICH THE TRESS OF HAIR MAY BE PACKED UNDER PRESSURE IN CONVOLUTIONS OF A SIZE AND SHAPE SUITABLE FOR CURLING, SAID MOUTH HAVING AW DIAMETER OF LESS THAN ONE-HALF OF THE DIAMETER OF SAID BODY PORTION, SAID BODY PORTION BEING PROVIDED WITH APERTURES TO PERMIT FREE AIR ESCAPE THEREFROM FOR AT LEAST THE MAJOR PART OF ITS LENGTH, IN WHICH 1, THE TOTAL AREA OF THE MOUTH IN SQUARE INCHES AT ITS MOST NUMBER OF SAID APERTURES IS SUCH THAT THE RATE SIZE AND NUMBER OF SAID APERTURES IS SUCH THAT THE RATE OF FLOW OF AIR THERETHROUGH, MEASURED IN CUBIC FEET PER MINUTE AT A PRESSURE DROP ACROSS THE APERTURES OF ONEHALF INCH OF WATER, HAS A VALUE OF LEAST AS GREAT AS E1 COMPUTED AS FOLLOWS:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |