US3706315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hairwinder
Assignee: Bristol Myers Co
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Filing: 1971-06-25
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Granted: 1972-12-19
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Expires: 1991-06-25
Abstract
Abstract A hairwinder having radially flanges at the end adapted for ease of handling and for minimizing tangling when the hair is unwound. The hairwinder is provided with fin or tongue-like projections which are of varying height and which lie in planes transverse to the longitudinal axis with end edges forming an angle of 90* or more with the tangential plane of the curved outer surface through the base point of the end edge.
Inventors
- 👤 Bent Georg Johansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:47
CPC Classifications
A; A45; A45D; A45D2/00; A45D2/12; A45D2/14; A45D2/146
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
A cylindrical hairwinder having a closed end and an open end and being adapted for mounting over separate vertical heating means, comprising an outer plastic casing having a curved surface and outwardly extending projections thereon, and an inner heat accumulating body, said hairwinder having at each end a radial flange extending a distance from said curved surface of the plastic casing equal to or greater than the height of said projections from the casing surface, each of said flanges having a plurality of perforations at intervals between its periphery and the circumference of the plastic casing which serve to reduce heat transmission and act as outlets and distributing passages for liquid which condenses onto the top or closed end of the hairwinder.
Claim 2
Dependent Claim
122 words
A cylindrical hairwinder having a closed end and an open end and being adapted for mounting over separate vertical heating means, comprising an outer plastic casing having a curved surface and outwardly extending projections thereon, and an inner heat accumulating body, said hairwinder having at each end a radial flange extending a distance from said curved surface of the plastic casing equal to or greater than the height of said projections from the casing surface, each of said flanges having a plurality of perforations at intervals between its periphery and the circumference of the plastic casing which serve to reduce heat transmission and act as outlets and distributing passages for liquid which condenses onto the top or closed end of the hairwinder.
Claim 3
Dependent Claim
66 words
A hairwinder according to claim 1 wherein said projections are arranged in staggered rows and are fin or tongue-like in shape and lie in planes transverse to the longitudinal axis of the hairwinder and have edges which form an angle with the tangential plane of the curved outer surface of the hairwinder through the base point of the edges equal to or greater than 90* .
Claim 4
Dependent Claim
28 words
A hairwinder according to claim 1 wherein each of said flanges comprise peripheral edges connected and adjacent to an outer cylindrical section having a plurality of raised surfaces.
Claim 5
Dependent Claim
21 words
A hairwinder according to claim 2 wherein the height of said projections decreases as the projections are located toward the center.
References Cited (Backward Citations)
US3161202A
Cited
US3267942A
Cited
US3376875A
Cited
US3533418A
Cited
US3600552A
Cited
US3566887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |