US3566887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair curler
Assignee: General Electric Co
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Filing: 1969-04-22
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Granted: 1971-03-02
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Expires: 1989-04-22
Abstract
Abstract The disclosure herein concerns a hair curler that prevents tangling of the hair. The curler consists of a cylindrical body with an array of outwardly projecting elements arranged in at least six longitudinally extending rows around the body. The sidewalls of the projections, as viewed in a plane normal to the longitudinal axis of the curler body, converged to form an included angle between 25 and 50 degrees which is substantially bisected by radial lines.
Inventors
- 👤 Thomas F Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:57
CPC Classifications
A; A45; A45D; A45D2/00; A45D2/12; A45D2/14; A45D2/146
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
97 words
A hair curler comprisiNg a cylindrical body, an array of outwardly projecting elements arranged in at least six longitudinally extending rows around the cylindrical body, each of said projecting elements having a generally rectangular shaped base with the width of the base parallel to the longitudinal axis of the curler, and sidewalls, as viewed in a plane normal to the 85 axis of said body, converging toward each other in a direction away from the curler body, with the included angle formed by said converging sidewalls being between 25 and 50* and substantially bisected by radial lines.
Claim 2
Dependent Claim
97 words
A hair curler comprisiNg a cylindrical body, an array of outwardly projecting elements arranged in at least six longitudinally extending rows around the cylindrical body, each of said projecting elements having a generally rectangular shaped base with the width of the base parallel to the longitudinal axis of the curler, and sidewalls, as viewed in a plane normal to the 85 axis of said body, converging toward each other in a direction away from the curler body, with the included angle formed by said converging sidewalls being between 25 and 50* and substantially bisected by radial lines.
Claim 3
Dependent Claim
15 words
The hair curler of claim 1 wherein the elements are arranged in eight spaced rows.
Claim 4
Dependent Claim
15 words
The hair curler of claim 2 wherein the included angle is between 40 and 48*.
Claim 5
Dependent Claim
32 words
The hair curler of claim 1 wherein the elements in successive rows are staggered with respect to each other and there are three to five elements per lineal inch in each row.
Claim 6
Dependent Claim
26 words
A The hair curler of claim 1 wherein the width of the base of each projecting element is less than half the length of said base.
Claim 7
Dependent Claim
120 words
A hair curler comprising: a plastic cylindrical body, an array of elements projecting outwardly from said body and arranged in eight longitudinally extending rows spaced around the body with three to five elements per lineal inch in each row, said elements in successive rows being staggered with respect to each other, each of said projecting elements having a generally rectangular-shaped base with the width of the base parallel to the longitudinal axis of the curler, and sidewalls, as viewed in a plane normal to the longitudinal axis of said body, converging upon each other in a direction away from said body, with the included angle formed by said converging sidewalls being from 40 to 48* substantially bisected by radial lines.
Claim 8
Dependent Claim
120 words
A hair curler comprising: a plastic cylindrical body, an array of elements projecting outwardly from said body and arranged in eight longitudinally extending rows spaced around the body with three to five elements per lineal inch in each row, said elements in successive rows being staggered with respect to each other, each of said projecting elements having a generally rectangular-shaped base with the width of the base parallel to the longitudinal axis of the curler, and sidewalls, as viewed in a plane normal to the longitudinal axis of said body, converging upon each other in a direction away from said body, with the included angle formed by said converging sidewalls being from 40 to 48* substantially bisected by radial lines.
Claim 9
Dependent Claim
35 words
The hair curler of claim 6 wherein the elements are truncated to provide a substantially flat top and the width of the base of each element is less than half the length of said base.
Claim 10
Dependent Claim
17 words
The hair curler of claim 1 wherein the elements are truncated to provide a substantially flat top.
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |