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Publication numberUS1138479 A
Publication typeGrant
Publication dateMay 4, 1915
Filing dateJun 24, 1912
Priority dateJun 24, 1912
Publication numberUS 1138479 A, US 1138479A, US-A-1138479, US1138479 A, US1138479A
InventorsWillis L Hough
Original AssigneeWillis L Hough
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dental polishing device.
US 1138479 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)




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Specification of Letters Patent.

Patented May 4, 1915.

Application led I une 24, 1912. Serial No. 705,385.

To all whom 'it may concern d Be it known that I, WILLIS L. HOUGH, a citizen of the United States, and resident of Laconia, in the county of Belknap and State of New Hampshire, have invented certain new and useful Improvements. in Dental Polishing Devices, of which the following is a specification.

This invention relates to attrition devices employed by dentists to polish the surface of teeth, fillings, crowns, etc., in the mouth of the patient. Such devices are employed in the form of disks to be rotated, and in the form of flexible strips.

For convenience of illustration andbrevi a dental attrition device which will not be affected by moisture and which will retain permanently a high degree of flexibility, resilience and strength, with the grit practically irremovable from the body. i The invention consists in the dental polishino' device, substantially as hereinafter described and claimed.

Of the accompanying drawings: Figure i 1 represents a perspective view of L polishing strip embodying my invention. Fig. 2 represents an enlarged section on line 2-2 of Fig. 1.

In carrying out my invention, a body layer of sheet celluloid a., a layer b of plastic material capable of hardening and of firmly uniting with the sheet celluuantity 0f grit c distributed over and su cientliy embedded in the layer b to not be remove by use.

A suitable material for the layer b may comprise celluloid dissolved or cut with alcohol, ether, Thisprovides a composition which is capa- I provide and bi-sulfid of carbon.

ble of hardening, and while doing so of being firmly united with the sheet celluloid layer a, and without in any way affecting or detracting from the flexibility, resilience, and strength or toughness possessed by said body layer a. In practice, the layer b is applied in any suitable manner, as by flowing it over or brushing it upon the body layer a and immediately the grit layer cis applied as by sifting the grit over the soft layer b. The grit immediately sinks sufficiently into the layer b, and the layer b begins to attach itself to the body layer a, and as the layer b hardens it firmly and durably unites the grit to said body layer. No heat or pressure is employed, and the body layer a is at no time rendered plastic.

When the grit c is distributed, the layer b solidifies and the grit is firmly attached to and practically becomes a part of the complete article.

As has been stated, it is essential that the complete article shall retain, practically complete, the characteristics of flexibility, resilience, and strength or toughness possessed by the body layer of sheet celluloid. Heat seriously affects all of these qualities, and to embed particles of grit in such body layer weakens the latter because of the numerous perforations or partial perforations. Particles cannot be embedded directly into sheet celluloid without subjecting the latter to heat, or to the action of a solvent, or both. After such treatment as last mentioned, celluloid never hardens to its original condition. Under my invention, however, the original condition of the body layer a which is depended upon for strength and resilience is never changed.

I claim A flexible dental attrition device comprising two celluloid layers intimately united to form a substantially homogeneous piece, one layer being continuous and unbroken, and grit embedded solely in the other layer.

In testimony whereof I have aflixed my` signature, in presence of two Witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2606409 *Jul 25, 1950Aug 12, 1952Robert N GordonMeans and method for conditioning photographic apparatus
US2725697 *Nov 2, 1953Dec 6, 1955Christensen Walter DProcess for seating the brushes on an electric commutator
US2748781 *Aug 24, 1953Jun 5, 1956Edgar CollatMeans for dental hygiene
US2929143 *Sep 12, 1955Mar 22, 1960Roubian Vahe SDenture adjustment device
US3491776 *Jun 8, 1967Jan 27, 1970Floxite Co IncDental cleaner for the removal of tobacco and other stains from teeth
US3590814 *Jan 3, 1969Jul 6, 1971Johnson & JohnsonInterdental stimulator
US3686761 *Sep 25, 1970Aug 29, 1972Gravon Frank GDental balancing method and apparatus
US3698388 *Jan 11, 1971Oct 17, 1972Plastek CoInterdental stimulator
US4055897 *Mar 11, 1976Nov 1, 1977Minnesota Mining And Manufacturing CompanyDental abrading device and method
US4776358 *Mar 17, 1988Oct 11, 1988Leonard LorchFloss employing microporous tapes sandwiching paste dentifrice
US7152611Dec 30, 2002Dec 26, 2006International Tape Partners, LlcCoated multifilament dental devices overcoated with imbedded particulate
US7381056Sep 1, 2005Jun 3, 2008Sobel Kathleen GSubstrate of polishing compound for teeth and method
US8070490 *Apr 29, 2010Dec 6, 2011Danville Materials, IncTeeth separating apparatus
US20110306012 *Jun 9, 2011Dec 15, 2011Smailus GuenterTool for the treatment of surfaces of dental materials
EP2394601A1 *Jun 11, 2010Dec 14, 2011Intensiv SATool for preparing surfaces of dental materials
U.S. Classification451/539, 51/303, 51/297, 451/915, 433/142
Cooperative ClassificationA61C3/06, Y10S451/915
European ClassificationA61C3/06