US4302491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair simulating fiber
Assignee: Individual
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Filing: 1977-11-07
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Granted: 1981-11-24
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Expires: 1997-11-07
Abstract
Abstract A composite hair simulating fiber with characteristics similar to human hair which includes a metallic core member coated with a plastic material to form a fine strand, the core member and/or the coating member being flattened to provide a strand which will have a curling characteristic with a self-retaining form which can be readily styled by an operator to provide various curves and convolutions as desired similar to that capable in human hair but with greater extension and retention properties.
Inventors
- 👤 Dimitri G. Papageorgiou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:41
CPC Classifications
A; A41; A41G; A41G3/00; A41G3/0083; B; B29; B29C; B29C53/00; B29C53/02; B29C53/12; B29C67/00; B29C67/0003; D; D02; D02G; D02G3/00; D02G3/44; D02G3/448; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2973; Y10T428/298
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
A strand for use as simulated hair having self-retaining characteristics for use in a hairpiece or a wig or any other similar or related head cover or ornament which comprises: (a) a core member in the form of a fine metal wire ranging in diameter from about 20 to about 30 microns, and (b) a coating on said core having the characteristics of a flexible plastic, the diameter of the coating being in the vicinity of 400 to 500 microns, (c) said coating being radially stressed transversely on one axis of said core member to a greater degree than on the axis perpendicular to said one axis.
Claim 2
Dependent Claim
107 words
A strand for use as simulated hair having self-retaining characteristics for use in a hairpiece or a wig or any other similar or related head cover or ornament which comprises: (a) a core member in the form of a fine metal wire ranging in diameter from about 20 to about 30 microns, and (b) a coating on said core having the characteristics of a flexible plastic, the diameter of the coating being in the vicinity of 400 to 500 microns, (c) said coating being radially stressed transversely on one axis of said core member to a greater degree than on the axis perpendicular to said one axis.
Claim 3
Dependent Claim
152 words
A strand for use as simulated hair having self-retaining characteristics for use in a hairpiece or a wig or any other similar or related head cover or ornament which comprises: (a) a core member in the form of a fine metal wire having a cross-section with major and minor axes, the dimension of the major axis being greater than in the minor axis, and (b) a coating on said core having the characteristics of a flexible plastic, said coating being stressed in the direction of the major axis to a greater degree than in the direction of the minor axis, (c) said core being flattened from a round cross-section wherein said coating is stretched radially by said flattened core to a corresponding flattened shape, (d) said core member ranging in diameter from about 20 to about 30 microns, and said coating having a diameter in the vicinity of 400 to 500 microns.
Claim 4
Dependent Claim
152 words
A strand for use as simulated hair having self-retaining characteristics for use in a hairpiece or a wig or any other similar or related head cover or ornament which comprises: (a) a core member in the form of a fine metal wire having a cross-section with major and minor axes, the dimension of the major axis being greater than in the minor axis, and (b) a coating on said core having the characteristics of a flexible plastic, said coating being stressed in the direction of the major axis to a greater degree than in the direction of the minor axis, (c) said core being flattened from a round cross-section wherein said coating is stretched radially by said flattened core to a corresponding flattened shape, (d) said core member ranging in diameter from about 20 to about 30 microns, and said coating having a diameter in the vicinity of 400 to 500 microns.
Claim 5
Dependent Claim
160 words
A strand for use as simulated hair having self-retaining characteristics for use in a hairpiece or a wig or any other similar or related head cover or ornament which comprises: (a) a core member in the form of a fine metal wire having a cross-section with major and minor axes, the dimension on the major axis being greater than in the minor axis, and (b) a coating on said core having the characteristics of a flexible plastic, said coating being stressed in the direction of the major axis to a greater degree than in the direction of the minor axis, (c) said core being bonded to said coating and said core being flattened from a round cross-section wherein said coating is stretched radially by said flattened core to a corresponding flattened shape, (d) said core member ranging in diameter from about 20 to about 30 microns, and said coating having a diameter in the vicinity of 400 to 500 microns.
Claim 6
Dependent Claim
160 words
A strand for use as simulated hair having self-retaining characteristics for use in a hairpiece or a wig or any other similar or related head cover or ornament which comprises: (a) a core member in the form of a fine metal wire having a cross-section with major and minor axes, the dimension on the major axis being greater than in the minor axis, and (b) a coating on said core having the characteristics of a flexible plastic, said coating being stressed in the direction of the major axis to a greater degree than in the direction of the minor axis, (c) said core being bonded to said coating and said core being flattened from a round cross-section wherein said coating is stretched radially by said flattened core to a corresponding flattened shape, (d) said core member ranging in diameter from about 20 to about 30 microns, and said coating having a diameter in the vicinity of 400 to 500 microns.
Claim 7
Independent Claim
128 words
A method of forming a strand for use as simulated hair having self-retaining characteristics for use in a hairpiece or wig or any other similar or related head cover or ornament which comprises: (a) the step of coating a fine untempered wire with a plastic material to provide a composite strand, (b) the step of applying lateral pressure to said strand to flatten the core wire in a first transverse cross-sectional direction and elongate said wire in a second cross-sectional direction normal to said first direction and simultaneously producing a stress on said coating said second cross-sectional direction, and (c) said wire having a diameter ranging from about 20 microns to about 30 microns and said coating having a diameter in the vicinity of 400 to 500 microns.
Claim 8
Independent Claim
128 words
A method of forming a strand for use as simulated hair having self-retaining characteristics for use in a hairpiece or wig or any other similar or related head cover or ornament which comprises: (a) the step of coating a fine untempered wire with a plastic material to provide a composite strand, (b) the step of applying lateral pressure to said strand to flatten the core wire in a first transverse cross-sectional direction and elongate said wire in a second cross-sectional direction normal to said first direction and simultaneously producing a stress on said coating said second cross-sectional direction, and (c) said wire having a diameter ranging from about 20 microns to about 30 microns and said coating having a diameter in the vicinity of 400 to 500 microns.
References Cited (Backward Citations)
US3790434A
Cited
US3955587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |