Oral Care Implement and Monofilament Bristle for Use with the Same
US-2018192766-A1 · Jul 12, 2018 · US
Oral care implement and filament for the same
US10244857B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10244857-B2 |
| Application number | US-201615250497-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 29, 2016 |
| Priority date | Aug 29, 2016 |
| Publication date | Apr 2, 2019 |
| Grant date | Apr 2, 2019 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A mechanically tapered bristle filament for an oral care implement. The filament is characterized by a long thin tapered end portion. The tapered end portion has a taper length and tip diameter comparable to chemically tapered filaments. The areal surface roughness of the tapered end portion however is greater than chemically tapered filaments thereby producing increased scrubbing action against the surfaces of the teeth. The foregoing taper and roughness characteristics of the present filament enhance inter-dental cleaning effectiveness.
First claim
Opening claim text (preview).
What is claimed is: 1. A mechanically tapered filament for an oral care implement, the filament comprising: an elongated shaft terminating in a tip and having a mounting end portion of constant cross section and a tapered end portion; wherein the tapered end portion has a taper length of 5 mm or more; wherein the tapered end portion has an areal surface roughness value of at least 0.20; and wherein the filament has a Nelson Ratio between 0.8 to 1.20. 2. The filament according to claim 1 , wherein the filament has a tip diameter of less than 10 microns measured at 0.05 mm from the tip in the tapered end portion. 3. The filament according to claim 1 , wherein the areal surface roughness value is at least 0.50. 4. The filament according to claim 1 , wherein the filament is formed of nylon. 5. The filament according to claim 1 , wherein the diameter between the tip and 0.05 mm from the tip is less than 10 microns. 6. An oral care implement comprising: a handle; a head supported by the handle; and a plurality of tooth cleaning elements extending from the head, wherein at least one of the tooth cleaning elements is the mechanically tapered filament according to claim 1 . 7. The oral care implement according to claim 6 , wherein all of the tooth cleaning elements comprise the mechanically tapered filament. 8. The oral care implement according to claim 6 , wherein only a portion of the tooth cleaning elements comprise the mechanically tapered filament. 9. The oral care implement according to claim 6 , wherein the mechanically tapered filaments comprise at least some of peripheral bristle tufts on the head. 10. A mechanically tapered filament for an oral care implement, the filament comprising: an elongated shaft terminating in a tip and having a mounting end portion of constant cross section and a mechanically tapered end portion; the tapered end portion having a taper length of 5 mm or more; the tapered end portion having a tip diameter of less than 10 microns measured at 0.05 mm from the tip; and the tapered end portion having an areal surface roughness value of at least 0.20; and wherein the filament has a Nelson Ratio between 0.8 to 1.20. 11. The filament according to claim 10 , wherein the areal surface roughness value is at least 0.50. 12. The filament according to claim 10 , wherein the filament is formed of nylon. 13. The filament according to claim 10 , wherein the diameter between the tip and 0.05 mm from the tip is less than 10 microns. 14. A mechanically tapered filament comprising: an elongated shaft terminating in a tip and having a mechanically tapered end portion, the tapered end portion having a Nelson Ratio between 0.8 to 1.20, wherein the Nelson Ratio is defined by the formula: Nelson Ratio ( Ω ) = 1 6.458 ( ( λ R 3 ) + ( 6 θ R ) + ( ϕ R 8 ) ) wherein λ R = Taper Length Ratio = λ Actual λ Target = Measured Taper Length Target Taper Length , measured in millimeters; wherein θ R = Tip Diameter Ratio = θ
Assignees
Inventors
Classifications
- A46D1/0261Primary
Roughness structure on the bristle surface · CPC title
Bristles; Selection of materials for bristles (making artificial bristles D01D, D01F) · CPC title
Splitting; Pointing · CPC title
Toothbrush for cleaning the teeth or dentures (A61C17/16 takes precedence; bristles arrangements for toothbrushes A46B9/04) · CPC title
- A46B9/04Primary
{Arranged like in or} for toothbrushes · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10244857B2 cover?
- A mechanically tapered bristle filament for an oral care implement. The filament is characterized by a long thin tapered end portion. The tapered end portion has a taper length and tip diameter comparable to chemically tapered filaments. The areal surface roughness of the tapered end portion however is greater than chemically tapered filaments thereby producing increased scrubbing action agains…
- Who is the assignee on this patent?
- Colgate Palmolive Co
- What technology area does this patent fall under?
- Primary CPC classification A46D1/0261. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Apr 02 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).