US3739419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-snagging hairbrush
Assignee: STANCE IND Inc
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Filing: 1970-12-07
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Granted: 1973-06-19
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Expires: 1990-12-07
Abstract
Abstract A hairbrush includes a plurality of concentric rings forming carrier plates for the bristles. The concentric rings are flexibly connected by hinges to allow the rings to move with respect to each other. The bristles carried by the concentric rings are stiff, allowing deep penetration of the hair. The flexibly mounted concentric rings allow the bristles to easily slip past any snags or knots encountered in the hair.
Inventors
- 👤 S Natman
- 👤 R Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:17
CPC Classifications
A; A46; A46B; A46B3/00; A46B3/20; A46B5/00; A46B5/002; A46B5/0025; A46B5/0029; A61; A61H; A61H7/00; A46B2200/00; A46B2200/10; A46B2200/104
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
55 words
A hairbrush comprising: a plurality of concentric rings; hinges mounted flexibly connecting said concentric rings; stiff bristles mounted on said concentric rings; and said stiff bristles which are mounted on the more inner of said concentric rings having their extremities at a higher altitude than the stiff bristles mounted on the more outer concentric rings.
Claim 2
Dependent Claim
55 words
A hairbrush comprising: a plurality of concentric rings; hinges mounted flexibly connecting said concentric rings; stiff bristles mounted on said concentric rings; and said stiff bristles which are mounted on the more inner of said concentric rings having their extremities at a higher altitude than the stiff bristles mounted on the more outer concentric rings.
Claim 3
Dependent Claim
40 words
A hairbrush as in claim 1 wherein said hinges connecting a first pair of concentric rings are displaced substantially 90* from the hinges connecting a third concentric ring to an adjacent concentric ring of said first pair of concentric rings.
Claim 4
Dependent Claim
16 words
A hairbrush as in claim 1 comprising a backing limiting the movement of said concentric rings.
Claim 5
Dependent Claim
36 words
A hairbrush comprising: a plurality of concentric rings; hinges contrapositionally mounted for flexibly connecting adjacent concentric rings; stiff bristles mounted on said concentric rings; and a backing supporting each inner concentric ring at a higher altitude.
Claim 6
Dependent Claim
36 words
A hairbrush comprising: a plurality of concentric rings; hinges contrapositionally mounted for flexibly connecting adjacent concentric rings; stiff bristles mounted on said concentric rings; and a backing supporting each inner concentric ring at a higher altitude.
Claim 7
Dependent Claim
45 words
A hairbrush comprising: a plurality of concentric rings; hinges contrapositionally mounted for flexibly connecting adjacent concentric rings; stiff bristles mounted on said concentric rings; and a backing limiting the movement of said concentric rings and supporting each next inner concentric ring at a higher altitude.
Claim 8
Dependent Claim
45 words
A hairbrush comprising: a plurality of concentric rings; hinges contrapositionally mounted for flexibly connecting adjacent concentric rings; stiff bristles mounted on said concentric rings; and a backing limiting the movement of said concentric rings and supporting each next inner concentric ring at a higher altitude.
Claim 9
Dependent Claim
49 words
A hairbrush comprising: a plurality of concentric rings surrounding a central member; hinges contrapositionally mounted flexibly connecting adjacent concentric rings; stiff bristles mounted on said concentric rings and said central member; wherein the outer concentric rings have less degrees of freedom than the inner concentric ring and central member.
Claim 10
Dependent Claim
49 words
A hairbrush comprising: a plurality of concentric rings surrounding a central member; hinges contrapositionally mounted flexibly connecting adjacent concentric rings; stiff bristles mounted on said concentric rings and said central member; wherein the outer concentric rings have less degrees of freedom than the inner concentric ring and central member.
Claim 11
Dependent Claim
19 words
A hairbrush as in claim 6 and backing for supporting each nExt inner concentric ring at a higher altitude.
Claim 12
Dependent Claim
39 words
A hairbrush as in claim 7 wherein said hinges connecting a first pair of concentric rings are displaced substantially 90* from the hinges connecting a third concentric ring to an adjacent one of said first pair of concentric rings.
Claim 13
Dependent Claim
10 words
A hairbrush as in claim 6 substantially made from polypropylene.
Claim 14
Dependent Claim
14 words
A hairbrush as in claim 9 comprising about 10 percent oleic acid by weight.
Claim 15
Dependent Claim
19 words
A hairbrush as in claim 7 wherein said backing is a layer of sponge-like material over a non-flexible backing.
Claim 16
Dependent Claim
19 words
A hairbrush as in claim 11 wherein said layer of sponge-like material is covered with a water impervious layer.
Claim 17
Dependent Claim
47 words
A hairbrush comprising a plurality of concentric rings surrounding a solid ellipse; hinges mounted flexibly connecting said concentric rings and solid ellipse; stiff bristles mounted on said concentric rings and solid ellipse; wherein the outer concentric rings have less degrees of freedom than the inner concentric rings.
Claim 18
Dependent Claim
47 words
A hairbrush comprising a plurality of concentric rings surrounding a solid ellipse; hinges mounted flexibly connecting said concentric rings and solid ellipse; stiff bristles mounted on said concentric rings and solid ellipse; wherein the outer concentric rings have less degrees of freedom than the inner concentric rings.
Claim 19
Dependent Claim
42 words
A hairbrush comprising a plurality of concentric rings; hinges contrapositionally mounted for flexibly connecting adjacent rings; and stiff bristles mounted on said concentric rings; wherein the outer concentric rings have less degrees of freedom than the inner concentric ring and solid ellipse.
Claim 20
Dependent Claim
42 words
A hairbrush comprising a plurality of concentric rings; hinges contrapositionally mounted for flexibly connecting adjacent rings; and stiff bristles mounted on said concentric rings; wherein the outer concentric rings have less degrees of freedom than the inner concentric ring and solid ellipse.
Claim 21
Dependent Claim
34 words
A hairbrush as in claim 6 wherein the outermost concentric ring has 1* of freedom, the second outermost concentric ring has 2* of freedom, and all other concentric rings have three degrees of freedom.
Claim 22
Dependent Claim
17 words
A hairbrush as in claim 6 wherein said concentric rings, said hinges and said bristles are integral.
Claim 23
Dependent Claim
17 words
A hairbrush as in claim 1 wherein said concentric rings, said hinges and said bristles are integral.
Claim 24
Dependent Claim
17 words
A hairbrush as in claim 7 wherein said concentric rings, said hinges and said bristles are integral.
Claim 25
Dependent Claim
51 words
A hairbrush comprising: a plurality of concentric rings; hinges mounted flexibly connecting said concentric rings; stiff bristles mounted on said concentric rings; said concentric rings, said hinges and said bristles being integral; and a carrier plate support and a handle portion integral with said integral concentric rings, said hinges and bristles.
Claim 26
Dependent Claim
51 words
A hairbrush comprising: a plurality of concentric rings; hinges mounted flexibly connecting said concentric rings; stiff bristles mounted on said concentric rings; said concentric rings, said hinges and said bristles being integral; and a carrier plate support and a handle portion integral with said integral concentric rings, said hinges and bristles.
Claim 27
Dependent Claim
27 words
A hairbrush as in claim 17 wherein said brush further comprises a carrier plate support and a handle portion, integral with said integral rings, hinges and bristles.
Claim 28
Dependent Claim
27 words
A hairbrush as in claim 18 wherein said brush further comprises a carrier plate support and a handle portion, integral with said integral rings, hinges and bristles.
Claim 29
Dependent Claim
39 words
A hairbrush as in claim 4 wherein said stiff bristles which are mounted on the more inner of said concentric rings have their extremities at a higher altitude than the stiff bristles mounted on the more outer concentric rings.
Claim 30
Dependent Claim
39 words
A hairbrush as in claim 6 wherein said stiff bristles which are mounted on the more inner of said concentric rings have their extremities at a higher altitude than the stiff bristles mounted on the more outer concentric rings.
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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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |