US4008727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interproximal space tooth cleaner
Assignee: Gillette Canada Inc
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Filing: 1975-05-19
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Granted: 1977-02-22
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Expires: 1995-05-19
Abstract
Abstract A variable diameter tooth cleaner formed by a plurality of elongate filaments to have a brush portion and a string portion with the string portion having two parts and with the brush portion being placed between the two parts. The string parts may be flexible or for spaces associated with fixed bridges may be formed with a rigid end extent for enabling insertion by pushing into the spaces.
Inventors
- 👤 Thomas F. Thornton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:15
CPC Classifications
A; A61; A61C; A61C15/00; A61C15/04; A61C15/041; A61C15/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A teeth cleaner for passage through interproximal space formed between adjacent teeth comprising an elongate flexible string portion and an elongate brush portion secured to the string portion, said brush portion being of spongy elastic material formed to have a cross-sectional extent normally substantially larger than the cross-section extent of the string portion and formed of a plurality of textured, commingled filaments that have been permanently deformed and crinkled, in which the string portion is formed of a plurality of essentially straight filaments that are unitary with the filaments of the brush part, in which the string portion has two parts, one at each end of the brush portion with both string parts each having an extent that is sufficient to enable grasping thereof by a user and in which there is a hardened covering on at least one of the string portions with the hardened covering being thicker on at least an end extent of the one of the string parts than on the remainder of the string portion with the hardened covering having sufficient thickness to cause the string part extent to be essentially rigid to enable a user to push on the extent.
Claim 2
Dependent Claim
196 words
A teeth cleaner for passage through interproximal space formed between adjacent teeth comprising an elongate flexible string portion and an elongate brush portion secured to the string portion, said brush portion being of spongy elastic material formed to have a cross-sectional extent normally substantially larger than the cross-section extent of the string portion and formed of a plurality of textured, commingled filaments that have been permanently deformed and crinkled, in which the string portion is formed of a plurality of essentially straight filaments that are unitary with the filaments of the brush part, in which the string portion has two parts, one at each end of the brush portion with both string parts each having an extent that is sufficient to enable grasping thereof by a user and in which there is a hardened covering on at least one of the string portions with the hardened covering being thicker on at least an end extent of the one of the string parts than on the remainder of the string portion with the hardened covering having sufficient thickness to cause the string part extent to be essentially rigid to enable a user to push on the extent.
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) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |