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Publication numberUS3866618 A
Publication typeGrant
Publication dateFeb 18, 1975
Filing dateJan 4, 1974
Priority dateJan 4, 1974
Publication numberUS 3866618 A, US 3866618A, US-A-3866618, US3866618 A, US3866618A
InventorsTsukamoto Sakichi
Original AssigneeTsukamoto Sakichi
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Nail file
US 3866618 A
Abstract
The present invention relates to a nail file comprising a pair of file members backed with perforated plastic layers respectively and an adhesive mixed with a hardener, to connect the said pair of file members, wherein the said nail file has upper and lower filing surfaces on both sides thereof and the said adhesive becomes itself a core between the entire rear surfaces of said pair of file members. The nail file according to the present invention has the advantages that by proper selection of the kind and quantity of the hardener and by proper adjustment of the width of the core the product can have desired rigidity, flexibility and resiliency to match finger nails of a variety of configurations.
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Description  (OCR text may contain errors)

Unlted States Patent 11 1 1111 3,866,618 Tsukamoto Feb. 18, 1975 NAIL FILE Primary Examiner-G. E. McNeill [76] lnventor' gz g gz gs gagt g T$ 6 Attorney, Agent, or Firm-Waters, Roditi, Schwartz &

Japan N1ssen [22] Filed. Jan. 4, 1974 ABSTRACT [21] Appl' 4306l0 The present invention relates to a nail file comprising I a pair of file members backed with perforated plastic [52] [1.8. CI. l 32/76.4 layers respectively and an adhesive mixed with a hard- [5 1] Int. Cl A45d 29/04 ener, to connect the said pair of file members, wherein [58] Field of Search 132/76.4, 76.2, 76.5, 75.6, the said nail file has upper and lower filing surfaces on 132/73, 75.3, 75.8 both sides thereof and the said adhesive becomes itself a core between the entire rear surfaces of said pair of [56] References Cited file members. The nail file according to the present UNITED STATES PATENTS invention has the advantages that by proper selection 2 557 175 6/1951 Cortes l32/76.4 of the killd and quantity of the hardener and by 2:699:79l 1/1955 Hansen l32/7614 Proper adlustmem of the Width of the core the Prod 3,196,885 7/1965 Emerson 132/7614 uct can have desired rigiditw flexibility and resiliency 3,293 3 1 1 19 7 Adams 132 7 4 to match finger nails of a variety of configurations. 3.3l8,3l8 5/1967 Gewirz 132/764 3,706,316 12/1972 lShll l32/76.4 4 Claims 1 Drawmg Flgure NAIL FILE The present invention relates to a nail file, and more particularly to a nail file provided with upper and lower filing surfaces on both sides thereof, without a separate core other than an adhesive.

The present invention comprises a pair of file members made of emery paper or cloth backed with resilient perforated plastic layers respectively and a specific adhesive to connect said layers together to form a nail file having upper and lower filing surfaces. The adhesive is mixed with hardening materials such as talc, lime powder, flocks and asbestos, etc. and is applied in such a manner that a core of desired width is formed between the upper and lower file members backed with perforated plastic layers.

Heretofore, in the case of the conventional nail file of this kind a separate core member was used between the rear surfaces of both upper and lower file members to be sticked thereto, with a suitable adhesive. Accordingly, the finished product lacked flexibility or rigidity, as the case may be, due to the nature and kind of the core member used.

On the other hand, the nail file of the present invention is characterized in that since a specific adhesive is used as a substitute for the core member as aforesaid it is possible to obtain a finished nail file of desired flexibility and rigidity by selecting the proper kind and amount of the hardener to be mixed and kneaded with the adhesive and by adjusting the width of the core to be formed by the adhesive, and to give the nail file a longer life.

Accordingly, an object of the present invention is to provide a nail file comprising a pair of file members made of emery paper or cloth backed with resilient perforated plastic layers, and a specific adhesive without using a core member separately.

Another object of the present invention is to provide a nail file of desired flexibility and rigidity which is well matched to fingernails of a variety of configurations.

Still another object of the present invention is to provide a nail file which is capable of being manufactured in a single process of sticking the file members without using a specific core.

The present invention will now be explained in detail with reference to the accompanying drawing in which FIG. 1 shows a perspective view of a nail file according to the present invention partly in section.

Referring to FIG. 1, a pair of file members 1 and 2 comprise a sheet of rough emery paper or cloth, of lower count and a sheet of fine emery paper or cloth, of higher count respectively, backed with resilient perforated plastic layers 3 and 3 such as polyurethane, polystyrene or polyvinyl chloride. The file members 1 and 2 are sticked together by an adhesive 5 with their rear surfaces facing opposite to each other thereby forming a finished nail file having both upper and lower filing surfaces. The adhesive 5 contains a hardener 4 comprising any mixture of talc, lime powder, alumina, mica, diatomaceous earth, glass powder, flocks and as bestos well mixed and kneaded to become suitable for the adhesion of plastic materials selected from polyester, neoprene or vinyl. In sticking together the said file members 1 and 2 the adhesive may be so used that it becomes itself a core a of desired width having sufficient resiliency, flexibility and rigidity between the entire rear surfaces of the said both file members, that is. the plastic layers 3 and 3'.

Thus, the nail file of the present invention has, as explained above, various advantages that by proper selection of the kind and quantity of the hardener as well as by proper adjustment of the width of the core to be formed by the adhesive a product of desired rigidity and flexibility can be obtained, that since the formation of the core and adhesion of the plastic layers are made in a single step the manufacturing process becomes quite simple, and further that due to the rigidity and flexibility of the core and the resiliency of the plastic layers the product can be well matched to a variety of configurations of finger nails whereby nail polishing can be done quite efficiently.

What I claim is:

l. A nail file comprising a pair of file members backed with resilient perforated plastic layers respectively and an adhesive mixed and kneaded with a hardener to connect the said pair so that the said nail filehas upper and lower filing surfaces on both sides thereof and the said adhesive becomes itself a core between the entire rear surfaces of said pair of file members.

2. A nail file as claimed in claim 1 wherein each of the pair of file members is made of a sheet of emery paper.

3. A nail file as claimed in claim 1 wherein each of the pair of file members is made of a sheet of emery cloth.

4. A nail file as claimed in claim 1 wherein the adhesive is well mixed and kneaded with a hardnener comprising any mixture of talc, lime powder, alumina, mica, diatomaceous earth, glass powder, flocks and as-

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2557175 *Jun 3, 1949Jun 19, 1951Edmundo CortesCorn abrasive file
US2699791 *Oct 24, 1952Jan 18, 1955Behrmanning CorpManicuring device
US3196885 *Feb 16, 1962Jul 27, 1965Scholl Mfg Co IncCorn and callous file
US3298381 *Aug 14, 1962Jan 17, 1967Adams Donald RManicure implement
US3318318 *Mar 13, 1964May 9, 1967Gewirz Carl SEmery board
US3706316 *Nov 1, 1971Dec 19, 1972Syntak Co LtdNail buffer
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4034769 *Aug 3, 1976Jul 12, 1977Koichi NishimuraFingernail polishing apparatus
US4683898 *Dec 27, 1985Aug 4, 1987Obrey LojovichManicure file and method of making same
US5287863 *Jun 23, 1992Feb 22, 1994Joie Aldran HFingernail and toenail file/buffer
US5782247 *Jul 29, 1997Jul 21, 1998Sadley; Susan J.System and method for buffing and polishing fingernails and toenails
US5799666 *Dec 5, 1996Sep 1, 1998Keen Perception Industries Inc.Polishing plate
US6488034 *Jul 9, 1998Dec 3, 2002Dalibor BlazekFile, particularly nail file
US6694988Jun 21, 2002Feb 24, 2004Dalibor BlazekFile, particularly nail file
US20020066459 *Dec 6, 2001Jun 6, 2002Turina Ing JanMethod and device for glass nail files
US20050098188 *Oct 3, 2003May 12, 2005Dalibor BlazekFile, particularly nail file
USD742069Jun 27, 2014Oct 27, 2015Lil DeConsuelo Izquierdo LopezManicure tool
USD759312 *May 21, 2014Jun 14, 2016Revlon Consumer Products Corp.Peelable nail file
DE9420107U1 *Dec 15, 1994Feb 9, 1995Rima Parfum Select ParfuemerieNagelfeile
WO2003024268A1Oct 3, 2001Mar 27, 2003DO.OL-GLASS s.r.o.Universal cosmetic file
Classifications
U.S. Classification132/76.4
International ClassificationA45D29/04, A45D29/00
Cooperative ClassificationA45D29/04
European ClassificationA45D29/04