Patent US3913593A successfully refreshed from Google Patents.
US3913593A
Expired / Lapsed
US
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Rod for use in cold permanent waving
Assignee: Arimino Chemical Co Ltd
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Filing: 1974-07-05
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Granted: 1975-10-21
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Expires: 1994-07-05
Abstract
Abstract A rod for use in the cold permanent waving having a substantially hollow cylindrical shape as a whole. The rod has a plurality of slots to accommodate a fastening pin. While winding the hair thereon, the rod is fastened to the hair by the fastening pin whose leg passes through the slots.
Inventors
- 👤 Nakaya Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:23
CPC Classifications
A; A45; A45D; A45D2/00; A45D2/12; A45D2/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
121 words
A combination of a rod and a fastening pin specifically designed for use in conjunction with said rod for use in cold permanent waving, the rod having a substantially hollow cylindrical shape and a plurality of slots circumferentially spaced in the proximity of both tips thereof, and the fastening pin having an elastically deformable neck, a leg extending from the neck, and a dent formed at the connecting portion of the neck and the leg, with the leg of the fastening pin penetrating into the rod in a direction perpendicular to the longitudinal axis of the rod through the slots and the dent in the fastening pin engaging elastically the tip of the rod, thereby fixing the pin to the rod.
Claim 2
Dependent Claim
121 words
A combination of a rod and a fastening pin specifically designed for use in conjunction with said rod for use in cold permanent waving, the rod having a substantially hollow cylindrical shape and a plurality of slots circumferentially spaced in the proximity of both tips thereof, and the fastening pin having an elastically deformable neck, a leg extending from the neck, and a dent formed at the connecting portion of the neck and the leg, with the leg of the fastening pin penetrating into the rod in a direction perpendicular to the longitudinal axis of the rod through the slots and the dent in the fastening pin engaging elastically the tip of the rod, thereby fixing the pin to the rod.
Claim 3
Dependent Claim
26 words
The combination as defined in claim 1 wherein the outer diameter of the rod at both tips decreases gradually toward the center of the body thereof.
Claim 4
Dependent Claim
23 words
The combination as defined in claim 1 wherein the rod is provided with a plurality of protrusions at both tips to prevent slippage.
Claim 5
Dependent Claim
22 words
The combination of claim 1 wherein a pair of long openings is provided at the center of the body of the rod.
Claim 6
Dependent Claim
24 words
The combination as defined in claim 1 wherein the rod is provided with a plurality of holes at the center of the body thereof.
Claim 7
Dependent Claim
25 words
The combination of claim 1 wherein the plurality of slots for the fastening pin is extended to the center of the body of the rod.
Claim 8
Dependent Claim
19 words
The combination of claim 1 wherein a number of pores is provided over the entire body of the rod.
Claim 9
Dependent Claim
15 words
The combination as defined in claim 1 wherein the rod is made of synthetic resins.
Claim 10
Dependent Claim
19 words
The combination as defined in claim 1 wherein the rod and the fastening pin are made of like materials.
References Cited (Backward Citations)
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US2396782A
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US2905186A
Cited
US3016909A
Cited
US3439686A
Cited
US3802443A
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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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |