US4056109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair-curler
Assignee: Lucky Hair Products Co Ltd
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Filing: 1976-06-16
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Granted: 1977-11-01
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Expires: 1996-06-16
Abstract
Abstract A hair-curler of the non-electrothermal type comprising a cage-like tubular core formed at its one end with at least two slots intersecting each other at the center of the end, a hollow cylindrical cover of cellular synthetic resin covering the tubular core, a frame support fitted in the other end of the tubular core and rotatable relative to the tubular core, and a rectangular holding frame having one end pivoted to the support and the other end provided with an engaging projection detachably engageable in one of the slots so that the hair is wound onto the cover while rotating the tubular core relative to the holding frame and is then held to the cover with the holding frame by engaging the projection in the slot. The hair can be readily effectively held in place by the holding frame in the desired angularly displaced position of the tubular core without using a separate hairpin for holding the hair.
Inventors
- 👤 Hisao Takai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:05
CPC Classifications
A; A45; A45D; A45D2/00; A45D2/12; A45D2/24; A45D2/2435
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
184 words
A hair-curler comprising a cage-like tubular core, a hollow cylindrical cover of cellular synthetic resin covering the tubular core, and a rectangular holding frame pivotally connected to one end of the tubular core and provided with an engaging projection detachably engageable in the other end of the tubular core; the tubular core: (1) being formed at its one end with at least two slots intersecting each other at the center of the end for engaging the engaging projection of the holding frame, the slots being formed in an outwardly bulged center portion of the end which provides a guide surface for the engaging projection of the holding frame; (2) having at its longitudinal midportion a flexible portion bendable with the cover when the tubular core is subjected to an external force at its opposite ends; and (3) having a frame support fittingly retained on the inner peripheral wall of the other end of the tubular core against displacement longitudinally of the tubular core but rotatable circumferentially of the tubular core; and the rectangular holding frame being integral in its entirety and surrounding the cover.
Claim 2
Dependent Claim
184 words
A hair-curler comprising a cage-like tubular core, a hollow cylindrical cover of cellular synthetic resin covering the tubular core, and a rectangular holding frame pivotally connected to one end of the tubular core and provided with an engaging projection detachably engageable in the other end of the tubular core; the tubular core: (1) being formed at its one end with at least two slots intersecting each other at the center of the end for engaging the engaging projection of the holding frame, the slots being formed in an outwardly bulged center portion of the end which provides a guide surface for the engaging projection of the holding frame; (2) having at its longitudinal midportion a flexible portion bendable with the cover when the tubular core is subjected to an external force at its opposite ends; and (3) having a frame support fittingly retained on the inner peripheral wall of the other end of the tubular core against displacement longitudinally of the tubular core but rotatable circumferentially of the tubular core; and the rectangular holding frame being integral in its entirety and surrounding the cover.
Claim 3
Dependent Claim
24 words
A hair-curler as defined in claim 1 wherein each of opposite long side portions of the rectangular holding frame has a rounded wavy form.
Claim 4
Dependent Claim
27 words
A hair-curler as defined in claim 1 wherein protrusions are provided on the inner surface of each of the long side portions of the rectangular holding frame.
Claim 5
Dependent Claim
28 words
A hair-curler as defined in claim 1 wherein the hollow cylindrical cover is formed on its outer peripheral surface with furrows and ridges extending in parallel axially thereof.
Claim 6
Dependent Claim
90 words
A hair-curler as defined in claim 1 wherein the tubular core is made of synthetic resin and comprises a plurality of annular vertical ribs and a plurality of straight horizontal ribs intersecting and connected to the vertical ribs into a cage-like hollow cylinder, the straight horizontal ribs being cut out at an axial midportion of the core between adjacent vertical ribs at the midportion, the cutouts being arranged radially symmetrically of the center of the circle of the annular vertical ribs and displaced from each other axially of the core.
Claim 7
Dependent Claim
72 words
A hair-curler as defined in claim 1 wherein the tubular core is made of synthetic resin and comprises a plurality of annular vertical ribs and a plurality of straight horizontal ribs intersecting and connected to the vertical ribs into a cage-like hollow cylinder, the tubular core further including at an axial midportion thereof a helical vertical rib integrally connected at its opposite ends to the annular vertical ribs positioned at the midportion.
Claim 8
Dependent Claim
50 words
The hair-curler of claim 1 wherein the rectangular holding frame has in a shorter side thereof a pin portion engageable in a groove of a bracket of the frame support, the holding frame being pivotally movable about the pin portion and restrained axially of the pin portion by stepped portions.
Claim 9
Dependent Claim
24 words
The hair-curler of claim 7 wherein the slots at the one end of the tubular core communicate with the interior of the tubular core.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-31 | 1981-05-02 | 1981-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-31 | 1985-05-02 | 1985-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-31 | 1989-05-02 | 1989-11-01 | $7700.00 | Window Closed / Lapsed |