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Publication numberUS2073137 A
Publication typeGrant
Publication dateMar 9, 1937
Filing dateJan 12, 1935
Priority dateJan 12, 1935
Publication numberUS 2073137 A, US 2073137A, US-A-2073137, US2073137 A, US2073137A
InventorsBimrose Frank H
Original AssigneeBimrose Frank H
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sanitary cover
US 2073137 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

March 9, 1937. F. H. BIMROSE 2,073,137

SANITARY COVER Filed Jan. 12, 1935 frank 25.13am

Inventor Attorney Patented Mar. 9, 1937 UNETE'D STATES PATENT OFFICE 1 Claim.

My invention relates to improvements in sanitary covers in connection with hand pieces for electric drills as used in dental ofiices and the like.

An important object of the invention is to provide a flexible covering means for the usual hand piece or any extension therefor and also in the same member a guide or journal and covering means therefor to encompass a part of the burr shaft.

A further object of my invention is to provide a sanitary sterilized covering that may be adaptable to slip over the hand piece of a dental drill which will be substantially supported thereto and adaptable for the same careful work usual in dental practice.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawing, forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Figure l is a side view of the usual type of hand piece used on dental operations and showing in cross section thereon the device of my invention as it will be normally disposed for use,

Figure 2 is a side view of the devices of my invention,

Figure 3 is a side view, partly in cross section, showing my invention as applied to a right angle hand piece or drilling head, and A Figure 4 is a cross section taken on the line 4-4 of Figure 1.

In the drawing wherein, for the purpose of illustration, is shown a preferred embodiment of my invention, numeral l0 designates a usual dental hand piece with its holder for holding drills or burrs and other tools used in dental operations and which hand piece is usually inserted in the mouth of a patient during an operation on his teeth.

Numeral l I designates a covering for the hand piece Ii! composed of a flexible tubular member which may be sterilized and when desired for use may be slipped over the hand piece and have close contact therewith and have the power to hold itself in place through the contraction of this flexible member. I prefer to use a thin rubber tubular shank member having an enlarged terminal band l2 of the same material and integral therewith, that will serve as an elastic to hold the cover member I I against movement during use.

On the lower end the tubular member is tapered, as at 13, to conform to the general contour of the hand piece and inside and vulcanized thereto is a metal thimble l4 having an extension end l5 thereon which will encompass, support, and serve as a bearing for the burr or tool shank that may be inserted into the hand piece.

The outside of the barrel or tubular member I I may be formed by fluting, as I6, to provide a better hold on the instrument or it may be formed with any roughened surface that will serve a like purpose.

The thimble I4 is provided with a notch or slot at H to fit over the usual screw l8 extending from the hand piece so as to insure that the lower end of the sanitary cover II will not twist or become otherwise displaced in use and to insure against rotation of the burr or tool from causing any twisting or like action.

It is frequently necessary in dental operations,

in order to reach some difficult place, to utilize what is known as a right angle hand piece which is usually a shorter member, as indicated in Figure 3 and which is adjustable to the hand piece I0 on its Working end.

When such an instrument as this is required,

I provide a similar sanitary cover having the same general characteristics as above explained, with the diiference that the end thereof is formed to the contours of the extension member and has in connection therewith the same element M for supporting the burr or tool and also for holding the sanitary cover against rotation or movement during use.

It is common practice in dental surgery to use the same hand tool in the mouths of all patients. This may be wiped off but is not sterilized due to the fact that it contains revolving parts, usually in the presence of grease or oil. The bearings, also being delicate, must be protected from heat expansion and contraction.

To overcome this insanitary feature it is my aim to provide a sanitary covering of extremely thin material manufactured in the manner described above and which may, for each patient, he slipped over the hand piece with facility and ease and be removed after the completion of the operation.

Since the burr or tool used in connection with the hand piece projects somewhat beyond the hand piece it is also a purpose of my invention to provide, through the thimble M a substantial support for the burr as well as provide that my covering will encompass the burr to a point a sufficient distance behind the cutting tool to insure against interference with the work but, at the terial having a thickened annular retaining band at its rear end and a tapered front end, a metallic, elongated, tapered thimble adapted to engage a hand piece fixed in the tapered front end of the cover and formed with a longitudinal slot open at the rear end of the thimble, and said thimble having a reduced front extension forming a bearing for a tool.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2943343 *Jan 3, 1958Jul 5, 1960Bernard JankelsonTooth polishing device
US4266935 *Dec 26, 1979May 12, 1981Gert HoppeProtective sleeve for the handle of a dental instrument
US4286950 *Mar 24, 1980Sep 1, 1981Hawk Gene RCover for dental handpiece bur
US4362241 *Aug 6, 1980Dec 7, 1982Williams Robert MApparatus for cold disinfection of dental and medical instruments
US4728290 *Apr 28, 1987Mar 1, 1988Eisner Mark RDental hand piece shield or prophylactic
US4752223 *Mar 13, 1987Jun 21, 1988Carlson Leonard GSheath assembly for dental handpiece
US4884558 *Nov 20, 1987Dec 5, 1989Gorsk, Inc.Laryngoscope assembly including disposable protective enclosure
US4907968 *May 6, 1988Mar 13, 1990Eisner Mark RDental syringe shield or prophylactic
US5267860 *Aug 28, 1992Dec 7, 1993Ingram Jr William LDental hygiene tool with shield and germicidal seals
US5407354 *Dec 3, 1993Apr 18, 1995Gull Laboratories, Inc.Anti-microbial apparatus and method for dental handpieces
US5480302 *Nov 7, 1994Jan 2, 1996Gull Laboratories, Inc.Anti-microbial apparatus and method for dental handpieces
US5921776 *Mar 5, 1998Jul 13, 1999Heilbrunn; Karl E.Disposable protective barriers for use with dental instruments
US6305937 *Jun 9, 2000Oct 23, 2001Sharon L. WilliamsReleasably mountable hand grip for a dental tool
US7204957 *Jun 30, 2005Apr 17, 2007Jason Grant TozerSanitizable cushioned sheath for the handle of a culinary knife or similar article
US8465490 *Jun 18, 2013Greatbatch Ltd.Disposable neucleotomy shaver
US20060000322 *Jun 30, 2005Jan 5, 2006Tozer Jason GSanitizable cushioned sheath for the handle of a culinary knife or similar article
US20120301841 *Dec 6, 2010Nov 29, 2012Micro Mega International ManufacturesHandpiece comprising a body including a hollow sleeve
DE2834797A1 *Aug 9, 1978Feb 14, 1980Gert Dr HoppeSchutzhuelle fuer zahnaerztliche handstuecke
DE3627144A1 *Aug 11, 1986Mar 26, 1987Lehmann Hans JoachimDevice for protecting dental instrument parts coming into contact with saliva against infection
WO2015187111A1Jun 4, 2015Dec 10, 2015Özkarsli Şükrü FatihProtective cover coating device
U.S. Classification433/116, 15/246
International ClassificationA61C1/08, A61C1/16
Cooperative ClassificationA61C1/16
European ClassificationA61C1/16