US4112040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making fibers containing hair particles
Assignee: Individual
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Filing: 1977-04-21
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Granted: 1978-09-05
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Expires: 1997-04-21
Abstract
Abstract Method of making fibers suitable for making a hair brush includes a matrix or pad made of a flexible material and a plurality of relatively rigid, single natural-type bristles having their lower ends anchored by flexible, sleevelike members projecting upward from the matrix. Also disclosed is a method of forming the bristles which includes comminuting natural bristles at a low temperature and then forming a thick slurry of the comminuted bristles and a binder, which is then molded and cured to form bristles having improved characteristics.
Inventors
- 👤 Norman Orentreich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:04
CPC Classifications
A; A46; A46B; A46B9/00; A46B9/02; A46B9/023; A46B3/00; A46B3/20; A46D; A46D1/00; D; D01; D01F; D01F1/00; D01F1/02; A46B2200/00; A46B2200/10; A46B2200/104; Y; Y10; Y10S; Y10S241/00; Y10S241/37; Y10T; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/041
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
A method for fabricating natural-like hair bristles for use in a hair brush or the like, said process comprising the steps of comminuting a quantity of natural hair fibers into a plurality of minute particles said comminuting including the steps of freezing said hair fibers to a temperature less than -190° C, and thereafter grinding said frozen hair fibers, mixing said minute particles with a binder to form a thick slurry, and thereafter molding said slurry into bristles of a predetermined size.
Claim 2
Independent Claim
82 words
A method for fabricating natural-like hair bristles for use in a hair brush or the like, said process comprising the steps of comminuting a quantity of natural hair fibers into a plurality of minute particles said comminuting including the steps of freezing said hair fibers to a temperature less than -190° C, and thereafter grinding said frozen hair fibers, mixing said minute particles with a binder to form a thick slurry, and thereafter molding said slurry into bristles of a predetermined size.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said molding includes extruding said slurry.
Claim 4
Dependent Claim
28 words
The method of claim 1, in which said binder is a substance in the group consisting of silicone rubber, a nylon elastomer, a polypropylene elastomer, and an epoxy.
Claim 5
Dependent Claim
28 words
The method of claim 1, in which said binder is a substance in the group consisting of silicone rubber, a nylon elastomer, a polypropylene elastomer, and an epoxy.
Claim 6
Dependent Claim
17 words
The method of claim 1, in which said minute particles are less than five microns in diameter.
Claim 7
Dependent Claim
28 words
The method of claim 5, which further includes the step, prior to said step of comminuting, of cutting said fibers to a size of less than 1 cm.
Claim 8
Dependent Claim
20 words
The method of claim 1, in which said hair fibers are frozen and thereafter ground in a liquid nitrogen atmosphere.
Claim 9
Dependent Claim
28 words
The method of claim 7, in which said binder is a substance in the group consisting of silicone rubber, a nylon elastomer, a polypropylene elastomer, and an epoxy.
Claim 10
Dependent Claim
32 words
The process of claim 1, in which said comminuting step includes the steps of freezing said hair fibers to a temperature less than -190° C, and thereafter grinding said frozen hair fibers.
Claim 11
Dependent Claim
20 words
The method of claim 9, in which said hair fibers are frozen and thereafter ground in a liquid nitrogen atmosphere.
Claim 12
Dependent Claim
20 words
The method of claim 1, in which said molding step includes the step of extruding said bristles in a mold.
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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |