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Publication numberUS3586380 A
Publication typeGrant
Publication dateJun 22, 1971
Filing dateNov 12, 1968
Priority dateNov 12, 1968
Publication numberUS 3586380 A, US 3586380A, US-A-3586380, US3586380 A, US3586380A
InventorsAlibeckoff Galib-Bey
Original AssigneeNylonge Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of producing an improved swab
US 3586380 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

I United States Patent [72] Inventor Galib-bey Allbeckofl [56] References Cited Lakewood Ohio UNITED STATES PATENTS $.11; 1968 2,409,660 10/1946 Briggs 117 166 ux f d 197] 2,495,237 1/1950 P6111011 117/166 ux W on 2,705,009 3/1955 Plantinga 61:11 128/269 1 ssignec C1332, 3,317,367 5/1967 Koller 15/244X Primary Examiner-Walter A. Scheel Assistant Examiner-Leon G. Machlin 54 METHOD OF PRODUCING AN IMPROVED SWAB 2 Claims, 3 Drawing Figs.

[52] U.S.Cl 300/21, ABSTRACT: A swab comprises a stick having a teardrop- 128/269 shaped nonwoven mass of cotton fibers on an end thereof [51] lnt.Cl A61f13/00 covered by an adherent sheath of regenerated cellulose [50] Field of Search 128/269, sponge. The swab is produced by dipping the stick mounted cotton mass into viscose containing particulate sodium sulfate to form a coating, and then coagulating and regenerating the cellulose in the coating.

METHOD OF PRODUCING AN IMPROVED SWAB BACKGROUND OF THE INVENTION The present invention relates generally to a method for producing an improved swab.

Small swabs are widely employed in wiping or applying liquids to surfaces which are frequently of a delicate nature so that any contamination thereof presents serious problems. For example, such swabs are employed in surgery, in the wiping of tissue and the application of medication thereto in the cleaning and lubricating of delicate equipment and machinery and in many other applications. A common form of swab which is generally used comprises a stick having wound on one or both ends thereof and adherent thereto, a teardrop-shaped nonwoven cotton mass which projects beyond the end of the stick. These conventional swabs possess a very important drawback in that the cotton fibers are frequently released and separated from the swab during use and deposit on the swabbed area and are overlooked or removed only with difficulty. This results in highly undesirable consequences and greatly limits the applications and dependability of the conventional swab.

SUMMARY OF THE INVENTION It is a principal object of the present invention to provide a method for producing an improved applicator.

Another object of the present invention is to provide a method for producing an improved swab.

Still another object of the present invention is to provide a method for producing an improved swab in which contamination of the swabbed area by deposits of portions of the swab is obviated.

A further object of the present invention is to provide an improved method for producing an improved swab of the above nature characterized by its versatility, adaptability and low cost.

The above and other objects of the present invention will become apparent by a reading of the following description taken in conjunction with the accompanying drawing which illustrates a preferred embodiment thereof.

In a sense the present invention contemplates the provision of a swab comprising a stick element, a core defining, shaped resilient mass mounted on an end of said stick element and a hydrophyllic porous sheath adherent to and enclosing said core. According to a preferred form of the improved swab the core is teardrop-shaped with the rounded end extending beyond the end of the stick and is formed of a nonwoven mass of cotton wound onto and adherent to the stick. The sheath is a thin film of porous regenerated cellulose sponge which extends beyond the inner end of the core and coats a short length of the stick.

The improved swab is advantageously produced by immersing the stick carried swab into a sponge-forming fluid comprising viscose having dispersed therein pore forming particulate sodium sulfate decahydrate, raising the swab and permitting excess liquid to drain therefrom and coagulating the viscose and regenerating the cellulose therein by immersing the coated core into a hot sodium sulfate solution.

The improved swab possesses all of the advantages of the conventional cotton swab, being very soft and highly absorbent and is characterized by the obviation of any separation of the swab material therefrom, such as fibers or the like, which is an important drawback of the conventional swab. The improved swab is inexpensive and easy to produce.

BRIEF DESCRIPTION OF THE DRAWING FIG. I is a perspective view of a swab embodying the present invention;

FIG. 2 is an enlarged elevational view of a portion of the swab in an intermediate stage of its production; and

FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 1.

DESCRIPTION OF PREFERRED EMBODIMENT Referring now to the drawing which illustrates a preferred embodiment of the present invention the reference numeral 10 generally designates the improved swab which may be single or double ended and is preferably of overall dimensions corresponding to those of the conventional swab. The swab 10 includes an elongated handle or stick 11 which may be of any desired length and may be formed of wooden or plastic rod, plastic tubing or the like.

Positioned at one or both ends of the stick 10 is a swab head 12 which may be of any desired configuration but is advantageously of teardrop configuration with the curved blunt end directed outwardly and spaced outwardly from the corresponding end of the stick 10. The head 12 includes a soft resilient, absorbent, advantageously hydropnyllic core 13 which, as shown in the drawing, is advantageously formed of nonwoven cotton fibers wound about the end of the stick in the known fashion and preferably secured thereto by adhesive between the contracting faces of the stick 11 and core 13. The core 13 may be of any desired dimensions, preferrably between one-half inch and 2 inches long and between threesixteenth inch and five-sixteenth inch wide.

The core 13 is enclosed in an adherent sheath 14 formed of a fine pored hydroplyllic sponge material, advantageously of regenerated cellulose. The sheath 14 is advantageously of a thickness between 0.01 inch and 0.10 inch, the core cotton fibers at the sheath core interface being at least partially imbedded in the sheath 14. Further, the sheath 14 advantageously extends beyond the inner end of the core 13 and coats and adheres to the contiguous portion of the stick 11, in which case it is not necessary to directly adhere the core 13 to the stick 11.

The improved swab-l0 is advantageously produced by immersing the stick supported core 13 in a porous sponge-forming liquid, and raising the core from the solution and permitting the excess solution to drain from the solution 13, with the rounded outer end thereof lowermost, until a substantially uniform coating remains on the core 13 and part of the stick 11. The sponge-forming solution is then solidified. The thickness of the coating and hence the sponge sheath 14 may be controlled by adjusting the viscosity of the sponge-forming solution. The core 13 is formed and applied to the stick 11 in the known manner.

The sponge-forming solution is advantageously a low viscosity viscose solution having dispersed therein, as a pore forming material, a particulate sodium sulfate decahydrate. For example the viscose has a high carbon bisulfide content and contains about 6 percent cellulose by weight. The poreforming sodium sulfate decahydrate preferrably has a particle size averaging between 0.25 and 1.25 millimeters, by weight, and the ratio of particulate sodium sulfate decahydrate to viscose is between 1:1 to 3:1, preferrably about 2:l. The sponge-forming viscose solution may be prepared in the manner described in US. Pat. No. 2,842,799 granted July 15, I958 to Alfred Politzer. The sponge-forming solution may contain soft reinforcing fibers but these may be advantageously omitted.

After the core 13 is coated with the viscose sponge-forming material, in the manner set forth above or otherwise, the coating is coagulated and the viscose therein regenerated by immersing the coated core into a hot sodium sulfate solution until regeneration is affected, for example, into a 20 percent sodium sulfate solution at l03 C. for above 5 minutes. The swab is then removed from the regenerating bath and thoroughly washed, for example, for about 1 hour in a 0.2 percent sulfuric acid solution, then washed in water, and then dried.

While there has beendescribed and illustrated a preferred embodiment of the present invention it is apparent that numerous alterations, omissions and additions may be made without departing from the, spirit thereof.


said viscose coated mass to permit excess viscose to drop therefrom, coagulating said viscose layer and regenerating the cellulose therein, and thereafter washing said layer.

2. The method of claim 1 wherein said pore-forming material comprises sodium sulfate decahydrate having, by weight, an average particle size between 0.25 and 1.25 millimeters and the ratio of said pore-forming material to said viscose is between lzl to 3:1.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3863654 *Jan 15, 1973Feb 4, 1975OrealCosmetic applicator
US3924623 *Nov 4, 1974Dec 9, 1975Marion Health And Safety IncTip for applicator swab
US4608968 *Sep 19, 1984Sep 2, 1986Oral Ease Inc.Gum massaging device with internal dispenser
US4795421 *Apr 25, 1986Jan 3, 1989Chesebrough-Pond's Inc.Oral hygiene swab
US4820259 *Jun 1, 1987Apr 11, 1989Stevens Robert BExternal ear cleaning device
US5044383 *Jan 2, 1990Sep 3, 1991Gerald AlessioDisposable manicure device
US5511654 *Feb 14, 1994Apr 30, 1996Calis Holdings, Inc.Swab and shield assembly for daubable material
US5709010 *Mar 31, 1995Jan 20, 1998Chesebrough-Pond's Usa Co., Division Of Conopco, Inc.Cotton swabs with expanded tips
US5735808 *Jul 10, 1996Apr 7, 1998The United States Of America As Represented By The Administrator Of The National Aeronautics And Space AdministrationContamination sampling device
US5766143 *May 27, 1997Jun 16, 1998Chesebrough-Ponds' Usa Co., Division Of Conopco, Inc.Cotton swabs with expanded tips
US5928176 *Apr 29, 1998Jul 27, 1999Nakatani; HiroshiMedical swab
US6277090 *Nov 19, 1998Aug 21, 2001Raymond Crawford, Jr.Nose cleaning system
US7008392Jun 27, 2003Mar 7, 2006Johnson & Johnson Consumer Companies, Inc.Hemostatic cleansing swab
US7097629 *May 2, 2003Aug 29, 2006Illinois Tool Works Inc.Multi-layered sealed swab
US7563239 *Sep 1, 2006Jul 21, 2009Rebecca W. Hudson, legal representativeEar exfoliating swab system
US8185997 *Oct 30, 2008May 29, 2012New Wave Surgical CorporationMethod and apparatus for cleaning the interior cannula of laparoscopic and endoscopic access devices
US20040220507 *May 2, 2003Nov 4, 2004Illinois Tool Works, Inc.Multi-layered sealed swab
US20040267180 *Jun 27, 2003Dec 30, 2004Beaudry Scott AlexanderHemostatic cleansing swab
US20110138749 *Jun 16, 2011Donald ChowSystem and method for manufacturing a tubular container with opening and closing means
USD701600Mar 30, 2011Mar 25, 2014Steven B. KauffmanEar swab
EP0363533A1 *Oct 12, 1988Apr 18, 1990Iwahashi TsugioApplicator
U.S. Classification300/21, D24/119, 604/1
International ClassificationA61F13/38
Cooperative ClassificationA61F13/38
European ClassificationA61F13/38