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Publication numberUS3789858 A
Publication typeGrant
Publication dateFeb 5, 1974
Filing dateDec 27, 1971
Priority dateDec 27, 1971
Publication numberUS 3789858 A, US 3789858A, US-A-3789858, US3789858 A, US3789858A
InventorsL Pesce
Original AssigneeL Pesce
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dental floss
US 3789858 A
Dental floss comprises a pair of strands twisted together. One strand is smooth and relatively strong, for example nylon. The other strand is relatively weak and has tufts at spaced intervals thereon for cleaning between the teeth and may be example cotton.
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Claims  available in
Description  (OCR text may contain errors)

United States Patent 11 1 Pesce Feb. 5, 1974 [54] DENTAL FLOSS 3,042,482 7/1962 Woodell 57/140 J [761 Inventor Louis 1311 Webser Ave-y i254??? if}??? 5231551311: 11113111111: iii/33 Maltland, 32789 2,821,202 l/l958 Davis 132/93 22 Filed: Dec. 27, 1971 Primary Examiner-Louis G. Mancene PP N04 212,472 Assistant Examiner-J. Q. Lever Attorney, Agent, or Firm-Young & Thompson [52] US. Cl. 132/89 51 Int. Cl. A6lc 15/00 [571 ABSTRACT [58] Field of Search 132/89; 57/140 BY, 140 J D nt l floss comprises a pair of ran t i ed 0- gether. One strand is smooth and relatively strong, for [56] References Cited example nylon. The other strand is relatively weak and UNITED STATES PATENTS has tufts at spaced intervals thereon for cleaning be- 2,99e,s72 8/1961 Porczynski 57 140 BY tween the teeth and may be example cotton 3,395,527 8/1968 Longley 57/140 BY 5 Claims, 4 Drawing Figures STRANDS FULLY INTERTWINED PATENTED FEB 5 I974 STRANDS FULLY INTERTWINED STRANDS PARTIALLY INTERTWINED WEAK TU FTED STRAND STRONG STRAND DENTAL FLOSS The present invention relates to dental floss, more particularly of the type with protuberances thereon for assisting in cleaning between the teeth.

It is an object of the present invention to provide a dental floss which will clean effectively between the occlusal surfaces of adjacent teeth.

Another object of the present invention is the provision of a dental floss which will be both strong and absorbent.

Finally, it is an object of the present invention to provide a dental floss which will be relatively simple and inexpensive to manufacture, and easy and reliable to use.

Other objects, features and advantages of the present invention will become apparent from a consideration of the following description, taken in connection with the accompanying drawing, in which:

FIG. 1 is a view of the relatively strong strand of the present invention;

FIG. 2 is a view of the relatively weak tufted strand of the present invention;

FIG. 3 is a view of the two strands partially intertwined; and

FIG. 4 is a view of the two strands fully intertwined,

1 showing the nature of the finished product which is the present invention.

Referring now to the drawing in greater detail, there is shown in FIG. 1 a length of the relatively strong strand l, which may be either monofilamentary or polyfilamentary and is preferably polyfilamentary, that is, a bundle of filaments disposed side-by-side in unwoven fashion, in the nature of a roving. The material of strand 1 is selected for strength and may be any of the relatively strong flexible strand materials that are in use for conventional dental flosses, for example, polyamide, polyester or nylon filaments. Particularly preferred is polyamide, e.g., nylon.

In FIG. 2 there is shown the relatively weak tufted strand 2, having spaced tufts 3 thereon. Strand 2, like strand 1, is preferably composed of a multiplicity of coextensive filaments; and tufts 3 may be formed in several different ways. In one way, tufts 3 may be formed simply by picking apart the filaments of strand 2 without breaking them. In another way, tufts 3 may be formed by a more conventional tufting process, that is, in which some but not all of the filaments of strand 2 are broken and pulled out from the contour of strand 2 at spaced intervals. In still another way, tufts 3 may be formed by wrapping further filaments of the material of strand 2 about strand 2 at spaced intervals. The method comprising breaking some but not all of the filaments and displacing them from the contour of the strand of course weakens the strand adjacent the tufts;

but this is acceptable, as it is strand 1 that imparts tensile strength to the floss, and not strand 2.

The materials of strand 2 may be for example cotton, wool or rayon. Cotton is preferred because of its relatively great absorbency.

A preferred material for strand 2 is the commercially available flake or slub. This material may be of cotton, wool, rayon or the like, but is preferably cotton, more preferably of long strand Egyptian cotton. It is conventionally made on a spinning frame and is a staple article of commerce which is commonly used in the textile in dustry to impart a nubby texture to fabrics.

The strands 1 and 2 are twisted together as shown in FIGS. 3 and 4, to form the final floss. The finished product is thus a relatively tightly intertwined composite of a relatively strong strand 1 and a relatively weak tufted strand 2. It will of course be appreciated that the tensile strength of the floss is largely due to strand 1, but that the absorbency and cleaning ability of the floss are largely due to strand 2.

In use, a portion of the floss intermediate the tufts is inserted in the usual way between the occlusal surfaces of a pair of adjacent teeth. After insertion, the floss can be pulled through in the usual way, the tufts 3 and the absorbency of strand 2 performing a very effective cleaning.

In view of the foregoing disclosure, therefore, it will be seen that all of the initially recited objects of the present invention have been achieved.

Although the present invention has been described and illustrated in connection with preferred embodiments, it is to be understood that modifications and variations may be resorted to without departing from the spirit of the invention, as those skilled in this art will readily understand. Such modifications and variations are considered to be within the purview and scope of the present invention as defined by the appended claims.

What is claimed is:

1. Dental floss comprising a pair of intertwined strands, both of said strands being polyfilamentary, one of said strands being smooth and stronger than the other of said strands, said other strand having a higher absorbency than said one strand and having spaced tufts thereon.

2. Dental floss as claimed in claim 1, said one strand being polyamide.

3. Dental floss as claimed in claim 1, said other strand being cotton.

4. Dental floss as claimed in claim 3, said cotton strand being slub.

5. Dental floss as claimed in claim 1, said one strand being nylon and said other strand being cotton slub.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1637153 *Oct 23, 1926Jul 26, 1927Lawton James AMedicament carrier
US2821202 *Jun 20, 1955Jan 28, 1958Jerome DavisDental cord
US2996872 *Jun 14, 1957Aug 22, 1961Scandura IncComposite yarns or cord and fabrics made therefrom
US3042482 *Nov 23, 1959Jul 3, 1962Du PontProcess and apparatus for wet spinning slub yarn
US3395527 *Jun 21, 1965Aug 6, 1968Scandura IncYarn and fabric made therefrom
US3511249 *May 13, 1968May 12, 1970Baitz AlexanderDevice for dislodging food particles from between human teeth
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3897796 *Aug 27, 1974Aug 5, 1975Erickson Forrest EDental floss
US3942539 *Apr 8, 1974Mar 9, 1976Corliss Joseph JAntiseptic cleansing dental floss
US3957067 *Apr 16, 1975May 18, 1976Ferraro Kenneth NDurable dental floss
US4142538 *Jan 17, 1977Mar 6, 1979Thornton Thomas FDifferent stiffness continuous length teeth cleaner
US4265258 *Aug 28, 1979May 5, 1981Eaton Melvin H IiDental floss
US4315517 *Oct 31, 1978Feb 16, 1982Krag Mark DDevice for cleaning teeth to prevent the formation of plaque
US4326547 *Nov 3, 1980Apr 27, 1982Verplank C MichaelTooth probe device
US5063948 *Apr 11, 1990Nov 12, 1991Lloyd O H PerryBristled dental floss
US5076300 *Jul 17, 1990Dec 31, 1991Mayfield Walter GDental floss
US5193559 *May 1, 1992Mar 16, 1993Kiyoshi MaekawaDental cleaning instrument
US5284169 *May 15, 1992Feb 8, 1994Gillette Canada, Inc.Method of producing a thin brush dental floss
US5433226 *Mar 9, 1994Jul 18, 1995Delta Dental Hygienics, L.L.C.Dental floss based on robust segmented elastomer
US5505216 *Feb 24, 1995Apr 9, 1996Gillette Canada Inc.Thin floss brush
US5526831 *May 26, 1994Jun 18, 1996Gillette Canada, Inc.Dental floss manufacturing process and product
US5558901 *May 26, 1994Sep 24, 1996Gillette Canada, Inc.Floss yarn bulking assembly and method
US5560377 *Apr 13, 1995Oct 1, 1996Donovan; MarionDental floss
US5711935 *May 10, 1994Jan 27, 1998Whitehill Oral Technologies, Inc.Dental floss
US5755243 *Jun 27, 1996May 26, 1998Gillette Canada, Inc.Dental floss with thermoplastic coating
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US5845652 *Jun 6, 1995Dec 8, 1998Tseng; Mingchih M.Dental floss
US5904152 *Apr 8, 1997May 18, 1999Gillette Canada Inc.Dental floss
US6027592 *Apr 8, 1997Feb 22, 2000Gillette Canada Inc.Dental floss
US6039054 *Sep 23, 1998Mar 21, 2000Gillette Canada CompanyDental floss
US6250313 *Jul 3, 1998Jun 26, 2001RéES ANNE DUTeeth-cleansing means
US6293287Sep 13, 1996Sep 25, 2001Gillette Canada Inc.UV-cured resin-coated dental floss
US8800574Dec 3, 2012Aug 12, 2014Linda A. HanrahanFluffy floss kit
US20050279377 *Jun 16, 2004Dec 22, 2005Sarjeant Peter TDental flossing agents, methods of use and manufacture
US20150272711 *Mar 26, 2015Oct 1, 2015Nasreen GaganDental floss apparatus, system and method for cleaning teeth
DE2520054A1 *May 6, 1975Nov 18, 1976Thomas Floyd ThorntonNylon floss for cleaning teeth - has short section with disarranged fibres which acts as brush
EP0759739A1 *May 8, 1995Mar 5, 1997Whitehill Oral Technologies Inc.Improvements in dental floss
EP0759739A4 *May 8, 1995Sep 15, 1999Whitehill Oral Tech IncImprovements in dental floss
WO1993022985A1 *May 11, 1993Nov 25, 1993Gillette Canada Inc.Thin floss brush manufacture and product
WO1995030404A1 *May 8, 1995Nov 16, 1995Whitehill Oral Technologies, Inc.Improvements in dental floss
WO1995032685A1 *May 26, 1995Dec 7, 1995Peri-Dent LimitedKnitted dental floss
WO2001076503A3 *Apr 6, 2001Apr 11, 2002Johnson & Johnson Ind ComA dental floss
U.S. Classification132/321, 57/206
International ClassificationA61C15/04
Cooperative ClassificationA61C15/042
European ClassificationA61C15/04B1