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Publication numberUS902109 A
Publication typeGrant
Publication dateOct 27, 1908
Filing dateFeb 6, 1908
Priority dateFeb 6, 1908
Publication numberUS 902109 A, US 902109A, US-A-902109, US902109 A, US902109A
InventorsJohn G Powell
Original AssigneeJohn G Powell
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dental finger-tray.
US 902109 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

u nu Luuuu nn-Y.. APPLICATION FILED PERS, 1908."

' Patented 001;.27,19os.




Specification of Letters Patent.

Patented Oct. 27, 1908.

Application led February 6, 1908. Serial No. 414,609.

T coll whom it may concern.'

te Be it known that I JOI-IN G. POWELL, a citizen of the United States, residing at Norris City, in the county of White and State of Illinois, have invented a new and useful Improvement in Dental Finger-Trays, of which the following is a speciiication.

This invention relates to a tray especially adapted for the use oi dentists for the purpose of holding coment while mixing, and which can also be used ior holding cleaning material, etc.

The invention consists of a iinger ring, a tray holder carried by said ring, and a circular concavo-convex tray carried by said holder.

In the drawings forming a part of this speciicatio1'i1-Figure l is a perspective view illustrating the practical application of the invention. Fig. 2 is a plan view. Fig. 3 is a sectional View, a portion of the ring being shown in elevation.

In constructingr the device I employ a ring A, which, if desired, may be split so as to accommodate fingers of diilerent sizes, and a star-shaped holder B is formed upon this ring and when the ring is in position upon the index inger the holder B will rest substantially parallel to the back of the nger. Resting upon this holder is a small circular tray O concave-convex in form, and the tray is held in position upon the holder D, by bending the projecting points B, of the star-shaped holder upwardly and inwardly over the edgev of the tray, as is very clearly shown in all of the iigures of the drawing. The ring A and the holder B may be of any desired metal such as gold or silver, or of hard rubber or of any other material suitable for such use.

The tray O is preferably of glass and is so shown in the drawings but it may be made of porcelain, celluloid aluminum or any other suitable material. A tray of this kind will take the place of the usual slab upon which the cement is mixed and will be very convenient as it is always at hand and can be held Vlirmly in the desired position while the 'cement is being worked which is not always the case with the loose slab resting upon the table. The device will also be very convenient for holding cleaning material or other substances While the dentist is operating at the dental chair thus avoiding continual turning from the chair to an adjacent stand or table.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A device of the kind described comprising a ring, a circular tray and means for holding the tray upon the ring.

2. A device of the kind described comprising a ring, a tray holder formed integral with the ring, and a concavo-convex tray carried by said holder.

3. A device of the kind described comprising a ring, a holder mounted upon the ring, and a tray carried by the holder, and projecting points carried by the holder and bent over the tray edges.

` JOHN G. POWELL. Witnesses: j


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2605032 *Nov 25, 1949Jul 29, 1952Hunt David LPin cushion
US2893548 *Dec 28, 1956Jul 7, 1959American Cyanamid CoSurgical ligature dispenser
US3327391 *Jul 20, 1964Jun 27, 1967Malm Richard DDental material holding apparatus
US4280808 *May 6, 1980Jul 28, 1981Jordco, Inc.Endodontic file holder
US4901847 *Feb 3, 1989Feb 20, 1990Tp Orthodontics, Inc.Ligature dispenser
US5016795 *Nov 22, 1989May 21, 1991Porteous Paul DDental paste cup with multi-facet inner base
US5112227 *Oct 19, 1990May 12, 1992Bull Charles LMaterial holding apparatus with integrated finger mount
US5169315 *May 8, 1992Dec 8, 1992Bull Charles LMaterial holding apparatus with integrated finger mount and cap
US5732862 *Feb 14, 1997Mar 31, 1998Bull; Charles L.Material holding apparatus with integrated finger mount
US6257888 *Feb 2, 2000Jul 10, 2001William L. BarhamDental practitioner's accessory
US8231734Jan 23, 2003Jul 31, 2012Jordco, Inc.Porous material for insertion cleaning of instruments
US8273009 *Mar 4, 2009Sep 25, 2012Cook Medical Technologies LlcPipette aspiration device
US8635735Jul 30, 2012Jan 28, 2014Jordco, Inc.Porous material for insertion cleaning of instruments
US9066776Jan 27, 2014Jun 30, 2015Jordco, Inc.Porous material for insertion cleaning of instruments
US9474584Mar 17, 2010Oct 25, 2016Jordco, Inc.Dental instrument servicing system
US9629701Aug 31, 2012Apr 25, 2017Jordco, Inc.Method and apparatus for cleaning and storing endodontic tools
US20040068820 *Jan 23, 2003Apr 15, 2004Jordco, Inc.Porous material for insertion cleaning of instruments
US20040139642 *Oct 10, 2003Jul 22, 2004Johnsen James B.Organization system for identifying instruments
US20090227833 *Mar 4, 2009Sep 10, 2009Cook Vascular IncorporatedPipette aspiration device
US20110229843 *Mar 17, 2010Sep 22, 2011Jordco, Inc.Dental instrument servicing system
Cooperative ClassificationA61C19/005