|Publication number||US2606366 A|
|Publication date||12 Aug 1952|
|Filing date||13 Oct 1948|
|Priority date||13 Oct 1948|
|Publication number||US 2606366 A, US 2606366A, US-A-2606366, US2606366 A, US2606366A|
|Inventors||Stevens James B|
|Original Assignee||Stevens James B|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (37), Classifications (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
J. B. STEVENS Aug 12 1952 VIBRATION DAMPENTNG ANO TNSULATING MEANS 2606366 FOR TOOLS SUCH AS DENTAL TOOLS Filed Oct. 13, 1948 Patented Aug. 12, 1952 UNITED STATES PATENT voF-FICE q VIBRATION DAMPENING AND INSULATING MEANS FOR TOOLS SUCH AS DENTAL lTOOLS J ames B. Stevens, Detroit, Mich.
Application October` 13, 1948, Serial No. 54,276( 2 claims. (o1. 32-48) This invention relates to tools. and particularly to vibration dampening and insulating means provided between the driven shank of the tool and the driven' element, and is a continuation-inpart of application for U. S. Letters Patent, Serial No. 12,403, led March 1, 1948, now abancloned.
It has been the practice to support a drilling tool in a driving head by direct metal-to-metal engagement, and as a result any vibration set up in the driving mechanism during the rotation of the drill would be transferred to the drill point. Static charges are oftentimes built up on the rotating parts of the driving mechanism which discharge from the drill point when the pointI is applied to the teeth of a patient being operated on when a dentist tool is being driven.
The present invention contemplates the use of an insulating material between the driving head and the drilling end of the tool so as to dampen out the vibrations and insulate the drill end from the discharge of the collected static charges. In a dental operation@ substantial amountl of the shock which heretofore was transferred to the teeth being drilled is eliminated by the use of a rubber or like coating between the drill shank and the driving head. It is to be understood that the coating may be applied to the tool supporting portion of the driving head or preferably to the shank of the tool so that the dampening occurs to the tool tip.
Accordingly, the main objects of the invention are: to provide sound deadening and insulating material between the supporting portion of a driving head and the driven tool; to provide vibration dampening and insulating material on the shank of the tool or on the supporting end of the driving head to dampen out vibrations between the driving head and the tool tip; to provide a coating of vibration dampening and insulating material on a reduced portion of the shank of the tool for maintaining a standard diameter for the shank, and, in general, to provide vibrating and dampening means for a cutting tip of a tool whi-ch is simple in construction and economical of manufacture.
Other objects and features of novelty of the invention will be specifically pointed out, or will become apparent when referring, for a better understanding of the invention, to the following description taken in conjunction with the accompanying drawing, wherein:
Figure 1 is a view of a driving head supporting a tool therein, with vibration dampening material therebetween embodying features of this nvention;
Fig. 2 is a Viewv of a tool, with the shank in section to show fthe` application of .the material thereon;
Fig. 3 is a view of structure, similar to that illustrated in Fig. 2, showing the material applied to a different type of driving shank;
Fig. 4 is a view of a tool, similar to that illustrated in Figs. 2 and 3, showing a vstill further form of driving shank to which the material is applied;
Fig. 5. is a view, similar to that illustrated in Fig. 2, showing another application of the material tothe tool shank;
Fig. 6 is a broken sectional View of a driving head, similar to that illustrated in Fig. 1, and i Fig. 7 is a sectional View of a collet type of driving head having features of the invention applied thereto.
While the invention is herein illustrated and described with relationn to dental tools, it is to be understood that the invention is not limited to this particular application.
In Fig. 1 a driving head I0 is illustrated for' a dental tool having a lever II thereon for engaging' a slot in the end of a tool for maintaining a driving shank I2I on the head with a drivingface in engagement `with a driving facein the head. It is to be understood that the vibration dampening and insulating material is provided either on the driving portion of the head or on the driven shank of the tool. Any vibration dampening and insulating material may be utilized, such as rubber of the organic or inorganic types, the various types of resins and such other materials known in the art to be suitable for these purposes.
Referring to Figs. 2, 3 and 4, drills of the dental type are therein illustrated having different driving shanks thereon conforming to the different driving heads furnished by different dental manufacturers. In Fig. 2 a tool I3 is illustrated having a cutting tip I 4 and a reduced shank portion I5, with the vibration dampening and insulating material I6 applied to the shank portion to build it up to a standard diameter. Preferably the material extends over the supporting and driving end II which embodies a flat face I8 which is engaged by a driving face in the head I0 held in position by the end of the lever II passing into a slot I9 on the shank end, Such a completely covered shank is illustrated in Fig. 3 wherein the tool 2l is provided with a cutting tip 22 and a shank A23 of reduced diameter built up by the material I6 to the standard diameter normally employed on the shank when the material is not applied thereto. This shank is provided with a flat face 24 which constitutes the driving face of the shank and an annular slot 25 in which the end of a lever, similar to the lever Il, extends for supporting the shank within the driving head.
In Fig. 4 a further form of dental tool 2S is illustrated, having a cutting tip 27 and a reduced 'shan-k portion Zs covered Vby the material I6. |Ihis ltype of tool is supportedby the ngers of a collet disposed Within a head on the end of a pencil-like body portion. It is to be understood that the material i6 .may rbe :applied in any manner knowninthe art, such ras bonding or by the use of an adhesive or by any other method well known in the art to be suitable.
In Fig. 5 a method of applyingfthevmaterialto the shank is illustrated, wherein a very thin wall tube 29 of brass, copper, plastic orthe like of substantial length has the material i6 coated -therenngandafterthe :zcoatng operation sec- 'itionszareznut therefrom'and. appliedatozthe shank 3l by soft solder or other adhering method. A -sleevef of ir'ubber, plastic tor :like `vibration .dampeningand insulating materialmay be directly applied to the reducedldiameterof Ithesshank `3l vian'd'- bonded, adhered or otherwise :secured there- -to. .flnfa'ny arrangement, the resulting tool has :fa shank provided Awith an overall dimensionxin diameter and length similar to the tools original- -ly mrovidedwith'out 'vsuchv materials, so' that Itools will-bereceived-inthe sameheads as employed for the prior tools. It is-alsofwithin 4the pur- `view rof this invention to apply the vibration dampeningtand insulating material yto the rdriv- `ngeelement \of the tools, ,permitting tools awith fstandard, :uncoated :Shanks to be futilized. -fIn Fig. 6 the driving head I0 has a .driving element -lZthereofY provided 'with .la lining not vibration fdampeningfand dnsulatingmaterial '33which may `bei-.bonded directly'fthereto :or -to 2a removable sleeve so that the materialmay-be renewed from :time to -itime. :In Fig; 'Ifacol-let .type yorf-,gripping ..head-.34 iis Villustrated having fcollet fingers .35 .-.thereimtheends of which vhave the vibration fdampening and-insulating material i6 bonded, adhered or otherwise rsecuredin vposition `there- -`onder-directlygrippingthe `.shank-31 .of fa tool.
4 It will be noted in the various forms of the invention that the tip of the tool is insulated against discharge of collected static charges and dampened against vibration normally conducted to the tip from the operating parts of the driving head. The mechanical vibrations from the driving ele- .mentsfelt bythe patient wvhenithe burr or cutting tip is applied to ato'oth is surprisingly softened when the vibration dampening and in- ;sulating material is employed between the driving headand shank of the tool and the painful discharge f -a.s`tatic charge onto the teeth of the patient which :sometimes occurs is also eliminated.
What-is claimed is:
:1. AA toclhaving a shank and a cutting end adapted to be received by a supporting and turn- Eing element, the shank of said tool being of less diameter than the cutting end to provide a shoulder, .a tube of `a vdiameter .to slidel over said :shanka coating of insulating fmaterial on the outersurface of said tube, -and :means .for -se- -curingsaidtube .to said shank.
2. 'A-tool having a shank and a4 cutting end adapted to be received by a supporting andzturning element, a tube of a diameter to slide over lsaid shank, an insulating material on the outer surface vof 'said tube, and means 'betweensaid shank-and tube for .securing said tube to said shankfin fxed unit vrelation therewith.
-`REFERENCES CITED Thelfllowing references are o'f recordinthe
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US474011 *||3 May 1892||Dental tool|
|US1476976 *||13 Aug 1921||11 Dec 1923||Ivory James W||Vibratory controlling device for dental and surgical instruments|
|US2310409 *||7 May 1941||9 Feb 1943||Ellman Martin M||Dental burr and hand-piece assembly|
|DE540158C *||8 Dec 1931||Bruno Fischer||Lagerung fuer die Werkzeuge in zahnaerztlichen Bohrmaschinen|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2917829 *||24 Feb 1958||22 Dec 1959||Chayes Dental Instr Corp||Drilling instrument|
|US3175293 *||10 Oct 1958||30 Mar 1965||John V Borden||Dental handpiece|
|US3324553 *||22 Aug 1957||13 Jun 1967||John V Borden||Dental handpiece|
|US3699843 *||20 Jan 1971||24 Oct 1972||Devlieg Machine Co||Tool having resilient bumper|
|US4051905 *||28 Mar 1974||4 Oct 1977||Gerbruder Heller||Drill for percussion drilling machines|
|US4068742 *||22 Sep 1976||17 Jan 1978||Atlas Copco Aktiebolag||Vibration damper for impact tool|
|US4086984 *||22 Sep 1976||2 May 1978||Atlas Copco Aktiebolag||Vibration damper for impact tool|
|US4478578 *||1 Feb 1982||23 Oct 1984||Micro-Mega S.A.||Handle for dental canal rotary instrument and method of manufacturing same|
|US4811736 *||20 Apr 1987||14 Mar 1989||Treace Medical, Inc.||Surgical drill and bur for use therewith|
|US5897318 *||16 Apr 1997||27 Apr 1999||Micro-Mega International Manufactures||Sleeve for a rotary dental instrument|
|US6345942 *||25 Feb 2000||12 Feb 2002||Harold D. Cook||Method and apparatus for mitigating vibration associated with rotary cutting machine|
|US6588994 *||15 May 2001||8 Jul 2003||James L. Wienhold||Drill bit tail|
|US7232311 *||16 Apr 2003||19 Jun 2007||Greggs Thomas S||Bur for preparing metal substrates|
|US7717771||2 Jul 2007||18 May 2010||Lyerly Dennis J||Angle grinder and angle grinder spindle-collet adaptor|
|US8020474 *||2 Feb 2005||20 Sep 2011||Microna Ab||Vibration-damped tool holder|
|US8240961 *||6 May 2005||14 Aug 2012||Mircona Ab||Tool holder with vibration damping means and a method for manufacturing the same|
|US8920424 *||11 Jun 2008||30 Dec 2014||Medtronic Ps Medical, Inc.||Micro-saw blade for bone-cutting surgical saws|
|US8939766 *||25 Jan 2013||27 Jan 2015||Alan Wong||Dental tools for photo-curing of dental fillings|
|US8978527 *||14 Nov 2011||17 Mar 2015||Korea Basic Science Institute||Long shaft bit having vibration preventing structure|
|US9414845 *||23 Dec 2014||16 Aug 2016||Medtronic Ps Medical, Inc.||Micro-saw blade for bone-cutting surgical saws|
|US20080025805 *||6 May 2005||31 Jan 2008||Peter Mihic||Tool Holder with Vibration Damping Means and a Method for Manufacturing the Same|
|US20080145162 *||2 Feb 2005||19 Jun 2008||Peter Mihic||Vibration-Damped Tool Holder|
|US20080292418 *||22 Feb 2008||27 Nov 2008||Kay Gregory J||Novel composite tool holders and boring tools|
|US20090155010 *||17 Dec 2007||18 Jun 2009||Cook Harold D||Tool holder dampening system|
|US20090312762 *||11 Jun 2008||17 Dec 2009||Medtronic Ps Medical, Inc.||Micro-Saw Blade for Bone-Cutting Surgical Saws|
|US20100132728 *||29 May 2009||3 Jun 2010||Gert Busch||Shaping tool|
|US20100143051 *||25 Mar 2008||10 Jun 2010||Guehring Ohg||Ball raceway milling device, tool having a ball raceway milling device, and method for the application of a ball raceway milling device|
|US20110256498 *||13 Apr 2011||20 Oct 2011||Alan Wong||Dental Tools for Photo-Curing of Dental Fillings|
|US20120264077 *||10 Nov 2011||18 Oct 2012||Alan Wong||Dental Tools for Photo-Curing of Dental Filings|
|US20130137058 *||25 Jan 2013||30 May 2013||Alan Wong||Dental Tools for Photo-Curing of Dental Fillings|
|US20130236254 *||27 Oct 2011||12 Sep 2013||Techspace Aero S.A.||Two-material one-piece cutting tool|
|US20130259584 *||14 Nov 2011||3 Oct 2013||Korea Basic Science Institute||Long shaft bit having vibration preventing structure|
|US20150112347 *||23 Dec 2014||23 Apr 2015||Medtronic Ps Medical, Inc.||Micro-Saw Blade For Bone-Cutting Surgical Saws|
|US20150258612 *||14 Mar 2014||17 Sep 2015||Kennametal Inc.||"Boring Bar with Improved Stiffness"|
|USRE30340 *||9 Nov 1978||22 Jul 1980||Dental handpiece|
|DE1123799B *||10 Jan 1961||15 Feb 1962||Hopf Ringleb & Co||Werkzeuge zum Bohren, Schleifen, Fraesen und Polieren fuer zahnaerztliche Zwecke, insbesondere fuer Hand- und Winkelstuecke mit hochtourigem Antrieb, vorzugsweise Druckluft- bzw. Fluessigkeitsturbinen, oder geeigneten UEbersetzungen fuer hohe Drehzahlen|
|EP1582171A1 *||29 Mar 2004||5 Oct 2005||Maillefer Instruments Holding S.A.R.L.||No reusable medical instrument, more specific dental instrument|
|U.S. Classification||433/166, 408/226, 408/143, 188/268|