Patent US5843442A successfully refreshed from Google Patents.
Patent US4115893A successfully refreshed from Google Patents.
US4115893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gum brush for infants
Assignee: PIGEON KK
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Filing: 1977-05-04
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Granted: 1978-09-26
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Expires: 1997-05-04
Abstract
Abstract A gum brush has an elongated handle with a stem end, to which is secured a brush head having a bullet shape and provided therearound in symmetrically distributed arrangement several fin-like projections some of which are parallel to the handle and others are perpendicular to the handle, these projections and the brush head being made of a rubberlike material such as cis-1,4-polyisoprene. In use, the brush head and projections are placed in an infant's mouth and moved at random or are chewed by the infant. As a result, the infant's teeth are cleaned, and, at the same time, its gums are firmed and strengthened.
Inventors
- 👤 Yuichi Nakata
- 👤 Tadayoshi Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:47
CPC Classifications
A; A46; A46B; A46B9/00; A46B9/005; A46B3/00; A46B3/005; A61; A61H; A61H13/00; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
A gum brush for infants comprising an elongated handle with a forward stem end, a brush head made of a rubberlike material and secured onto said stem end, and a plurality of projections made of a rubber-like material and integrally joined to and projecting outward from the outer surface of said brush head, said projecting comprising first fin-like projections and second fin-like projections aligned in directions intersecting the directions of said first fin-like projections, all projections projecting radially outward from said brush head, and said first and second fin-like projections being mutually interspersed in symmetrical and distributed arrangement around the surface of the brush head.
Claim 2
Dependent Claim
105 words
A gum brush for infants comprising an elongated handle with a forward stem end, a brush head made of a rubberlike material and secured onto said stem end, and a plurality of projections made of a rubber-like material and integrally joined to and projecting outward from the outer surface of said brush head, said projecting comprising first fin-like projections and second fin-like projections aligned in directions intersecting the directions of said first fin-like projections, all projections projecting radially outward from said brush head, and said first and second fin-like projections being mutually interspersed in symmetrical and distributed arrangement around the surface of the brush head.
Claim 3
Dependent Claim
233 words
A gum brush for infants comprising an elongated handle with a forward stem end, a brush head made of a rubberlike material and secured onto said stem end, and a plurality of projections made of a rubber-like material and integrally joined to and projecting outward from the outer surface of said brush head, said projections comprising first fin-like projections and second fin-like projections aligned in directions intersecting the directions of said first fin-like projections, all projections projecting radially outward from said brush head, said first fin-like projections being substantially parallel to the longitudinal direction of the elongated handle, and said second fin-like projections being substantially perpendicular to said longitudinal direction, eight of said first fin-like projections being provided in first, second, third, and fourth pairs each comprising two projections aligned in tandem in the longitudinal direction, said first and second pairs being relatively close to each other and respectively lying on the diametrically opposite sides of the brush head from said third and fourth pairs in symmetrical arrangement therewith, and fourteen of said second fin-like projections being provided in first and second groups each of seven projections disposed in spaced-apart positions along the longitudinal direction from the rear end to the forward end of the brush head, the first group being interposed between said second and third pairs and the second group being interposed between said first and fourth pairs in symmetrical arrangement.
Claim 4
Dependent Claim
233 words
A gum brush for infants comprising an elongated handle with a forward stem end, a brush head made of a rubberlike material and secured onto said stem end, and a plurality of projections made of a rubber-like material and integrally joined to and projecting outward from the outer surface of said brush head, said projections comprising first fin-like projections and second fin-like projections aligned in directions intersecting the directions of said first fin-like projections, all projections projecting radially outward from said brush head, said first fin-like projections being substantially parallel to the longitudinal direction of the elongated handle, and said second fin-like projections being substantially perpendicular to said longitudinal direction, eight of said first fin-like projections being provided in first, second, third, and fourth pairs each comprising two projections aligned in tandem in the longitudinal direction, said first and second pairs being relatively close to each other and respectively lying on the diametrically opposite sides of the brush head from said third and fourth pairs in symmetrical arrangement therewith, and fourteen of said second fin-like projections being provided in first and second groups each of seven projections disposed in spaced-apart positions along the longitudinal direction from the rear end to the forward end of the brush head, the first group being interposed between said second and third pairs and the second group being interposed between said first and fourth pairs in symmetrical arrangement.
Claim 5
Dependent Claim
93 words
A gum brush for infants comprising an elongated handle with a forward stem end, a brush head made of a rubberlike material and secured onto said stem end, and a plurality of projections made of a rubber-like material and integrally joined to and projecting outward from the outer surface of said brush head, and in which said projections comprise first fin-like projections, second fin-like projections aligned in directions intersecting the directions of said first fin-like projections, and a plurality of finger-like projections, all projections being disposed in mutually dispersed and symmetrically arranged groups.
Claim 6
Dependent Claim
93 words
A gum brush for infants comprising an elongated handle with a forward stem end, a brush head made of a rubberlike material and secured onto said stem end, and a plurality of projections made of a rubber-like material and integrally joined to and projecting outward from the outer surface of said brush head, and in which said projections comprise first fin-like projections, second fin-like projections aligned in directions intersecting the directions of said first fin-like projections, and a plurality of finger-like projections, all projections being disposed in mutually dispersed and symmetrically arranged groups.
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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) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |