Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1720017 A
Publication typeGrant
Publication dateJul 9, 1929
Filing dateApr 25, 1928
Priority dateApr 25, 1928
Publication numberUS 1720017 A, US 1720017A, US-A-1720017, US1720017 A, US1720017A
InventorsGrady R Touchstone
Original AssigneeGrady R Touchstone
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dental cleaning brush
US 1720017 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

July 9, 1929. s. R. TOUCHSTONE DENTAL CLEANING BRUSH Filed April 25, 1928 gnventoz Greta} 1: Maia/1e Pasta July 9; 1929.

UNITED STATES Application filed April 25,

This invention relates to a dentists brush for cleaning the teeth of his patients. Heretofore a brush has been employed for this purpose having bristles the'ends of which brush the teeth when the brush is in operation, but in practice the bristles are apt to engage the gum and injure it. The general object of this invention is to provide a dentists brush which is so constructed that such a brush cannot injure the gum. A'

. further object of the invention is to give the while the broad scope of the invention is pointedout in the appended claims.

In the drawing; which is upon an enlarged scale I Figure 1 is a side elevation showing the end of a hand piece broken away and illus trating the relation of the brush carried by it.

Figure 2 is a vertical section through the brush and showinga portion of the metallic stem of the brush in side elevation.

Figure 3 is a view illustrating the mannet in which the brush operates andthis view indicates the outline of a tooth and gum. In this view the tool holder is represented as broken away and. the brush is shown partially in section and partially in elevation.

In practicing the invention I provide an inner brush and this brush is provided with" a guard of flexible material which operates toprotect the gum from contact with the inner brush. The inner brush can be constructed of any suitable material but is preferably formed of bristles.

Referring more particularly to the parts, 1 represents the end of a dentlsts tool holder which is provided on its face with the usual boss 2 at the end of which the brush 3 is mounted.

The brush 3 includes an inner brush 4 preferably formed of bristles. This inner brush is mounted so that it is surrounded by an annular flexible rim 5. This rim 5 J V H 1,720,017, PATENT OFFICE.



1928. Serial 1V0. 272,581.

is preferably formed'as the rim of a cup 6 of flexible'material such as soft rubber. Any

suitable construction may be employed that will result in having the flexible rim surround the bristles. It is preferable, however, to construct the cup 6 with a cavity 7 in its end face so that the rim 5 forms the edge of this cup. The brush 4 has its butt end,8 set in the rubber and may be vulcanized in place so that the bristles will not become detached. The cup 6 is in the form of a frustum of a cone so that itpresents an inner end face 9. From this end face 9 a. metalistem 10 projects and this stem extends into the body ofthe cup and carries the cup 6. The end of the stem may be provided with any suitable means such as a clreumferential groove. 11 for enabling it to be secured to the usual mechanism in the holder 1 that enables the stem and brush to be rotated. formed intwo sections, the inner section'lO 1n the body of the brush being connected by screw thread 12 to the outer section 10". Referring to Figure 3, when the brush is in operation the end of the brush 4 spreads The stem 10- is preferably when the sameis held against the side 13 i of a tooth 14 but in spite of this spreading the ends of the bristles will be prevented from coming in contact with the gum indicated at 15 by reason of the rim 5 which is interposed between the bristles and the gum.

flexibility it does not interfere with the oper- 'ation of the brush, nor does it injure the gum by contact with it. In fact the slightly massaging effect on the gum from contact with the rim 5 is rather beneficial.

The rim 5 is relatively thin and due to its I By reason of the fact that the stem 10 is formed in sections, a worm brush can be unscrewed and replaced by another brush without the loss of the entire length of the stem.

In order to protect the driving mechanism within the holder 1 from any cleaning substance-used with the brush, the end face 9 of the cup is provided with a flexible collar 16 of rubber or similar material which is of concave-convex form and the concave side covers the end face of the boss 2.

In practice, when the brush is not in use,

the end of the bristles forming the inner brush 4 should lie a half millimeter from the plane of the end of the rim.

-- The cavity 7 in the cup may be employed to carry pumice stone orany other substance which it is desired to use with the brush.

When the brush is in use, it will be evident 7 that the rim 5 assists in retaining such a substance in contact with the inner brush.

5 The brush illustrated is, of course, a rotary 10 the many embodiments this invention may take, and I do not Wish to be limited in the practice of the invention,nor in the claims, to the particular embodiment set forth.

What I claim is -15 1. In a dentists brush for cleaning teeth,

the combination of a cup of flexible material having a cavity with an annular rim, a brush i composed of bristles located in the cavity on the axis of the cup, and a stem carrying the cup and inner brush for rotating the 2( same.

2. In a dentists rotary brush for cleaning teeth, the combination of a cup of flexible material having a cavity at its end face, with an annularrnn around the cavity, and a 2 brush having bristles located centrally in the cavity for engaging the face of a tooth, the said rim operating to protect the gum from contact with the said bristles.

Signed at Los Angeles, California this 3( 19th day OfilAPl'll 1928.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2634722 *Jan 25, 1951Apr 14, 1953Frederick Jackson Charles JoseDental massaging, cleaning, and medicating device
US2656559 *Nov 28, 1949Oct 27, 1953Adolph D WisemanDental brush in elastic base for handpiece
US2774088 *Nov 30, 1953Dec 18, 1956Liska Edward FPower operated shoe polisher
US3106732 *Nov 10, 1961Oct 15, 1963DaytonWork-actuated rotary brush
US3436830 *Jan 18, 1967Apr 8, 1969Richmond George ETooth polisher with pumice seal
US3478433 *Apr 15, 1968Nov 18, 1969Richmond George ETooth cleaning tool
US3977084 *Aug 26, 1974Aug 31, 1976Tsset Scientific And Pharmaceutical LimitedDental hygienic device
US4182041 *Aug 24, 1978Jan 8, 1980Girard, Inc.Dental prophylactic right angle hand piece
US5584690 *Oct 12, 1995Dec 17, 1996Maassarani; SamiDental cleaning assembly
US6203322Apr 15, 1999Mar 20, 2001David KraenzleDental prophylaxis angle
US6820300 *Aug 13, 2003Nov 23, 2004James A. Gavney, Jr.Squeegee device and system
US6938293Oct 14, 2004Sep 6, 2005Colgate-Palmolive CompanyPowered toothbrush
US6944903May 5, 2004Sep 20, 2005Gavney Jr James ADentition cleaning device and system
US6966093Sep 27, 2002Nov 22, 2005Colgate-Polmolive CompanyToothbrush having a movable upstanding cleaning element
US7047589Oct 6, 2004May 23, 2006Gavney Jr James ADentition cleaning device and system
US7051394Jun 30, 2004May 30, 2006Gavney Jr James ADentition cleaning device and system
US7069615Jun 30, 2004Jul 4, 2006Gavney Jr James ASqueegee device and system
US7137163 *Sep 27, 2002Nov 21, 2006Colgate-Palmolive CompanyPower toothbrush and power source
US7181799Oct 24, 2003Feb 27, 2007Eegee, LlcOral-care device and system
US7210184Sep 2, 2005May 1, 2007Colgate-Palmolive CompanyPowered toothbrush
US7363675Sep 26, 2005Apr 29, 2008Gavney Jr James ASqueegee device and system
US7386905Apr 9, 2007Jun 17, 2008Colgate-Palmolive CompanyPowered toothbrush
US7434288Aug 24, 2004Oct 14, 2008Gavney Jr James AOral care device with multi-structural contact elements
US7562411Aug 19, 2004Jul 21, 2009Gavney Jr James AOral-care device and system
US7707676Jun 30, 2006May 4, 2010The Procter & Gamble CompanyToothbrush
US7743448Aug 19, 2005Jun 29, 2010Gavney Jr James ADevice and system with moving squeegee fields
US7814603Mar 29, 2005Oct 19, 2010Gavney Jr James APowered toothbrush with polishing elements
US7814604Mar 14, 2005Oct 19, 2010Gavney Jr James ADevice with multi-structural contact elements
US7877833Jul 6, 2005Feb 1, 2011Gavney Jr James AOral-care device and system
US7934284Feb 11, 2003May 3, 2011Braun GmbhToothbrushes
US7941886Sep 19, 2003May 17, 2011Braun GmbhToothbrushes
US7958589Jun 12, 2009Jun 14, 2011The Gillette CompanyToothbrushes
US7975339Jul 20, 2004Jul 12, 2011Gavney Jr James AAquatic scrubber
US8141194May 4, 2005Mar 27, 2012Gavney Jr James AAbsorbent structures with integrated contact elements
US8156600Sep 9, 2008Apr 17, 2012The Gillette CompanyGum massaging oral brush
US8276231Dec 7, 2005Oct 2, 2012Gavney Jr James AOral-care device and system
US8276233Dec 3, 2004Oct 2, 2012Gavney Jr James AMulti-directional wiping elements and device using the same
US8584299Jul 25, 2007Nov 19, 2013The Procter & Gamble CompanyElectric toothbrushes
US8695149Apr 1, 2011Apr 15, 2014Braun GmbhToothbrushes
US8955186Oct 15, 2013Feb 17, 2015The Procter & Gamble CompanyElectric toothbrushes
US9237790 *Jun 10, 2011Jan 19, 2016Kao CorporationHead-hair treatment-agent applicator
US20020084550 *Dec 26, 2001Jul 4, 2002Michael RobertsGum-massaging oral brush
US20030196283 *Apr 23, 2002Oct 23, 2003Eyal EliavPowered toothbrush
US20040031115 *Aug 13, 2003Feb 19, 2004Gavney James A.Squeegee device and system
US20040060136 *Sep 27, 2002Apr 1, 2004Gatzemeyer John J.Power toothbrush and power source
US20040154112 *Feb 11, 2003Aug 12, 2004Braun Phillip M.Toothbrushes
US20040200016 *Apr 9, 2003Oct 14, 2004The Procter & Gamble CompanyElectric toothbrushes
US20040221409 *Jun 4, 2004Nov 11, 2004Gavney James A.Squeegee device and system
US20040231076 *Jun 30, 2004Nov 25, 2004Gavney James A.Dentition cleaning device and system
US20040231082 *May 5, 2004Nov 25, 2004Gavney James A.Dentition cleaning device and system
US20040237236 *Jun 30, 2004Dec 2, 2004Gavney James A.Squeegee device and system
US20050015901 *Aug 19, 2004Jan 27, 2005Gavney James A.Oral-care device and system
US20050049155 *Oct 24, 2003Mar 3, 2005Gavney James A.Oral-care device and system
US20050060826 *Nov 2, 2004Mar 24, 2005Gavney James A.Device with multi-structural contact elements
US20050086753 *Nov 18, 2004Apr 28, 2005Gillette Canada, A Canadian CorporationGum massaging oral brush
US20050097688 *Oct 14, 2004May 12, 2005Colgate-Palmolive CompanyPowered toothbrush
US20050273954 *Aug 19, 2005Dec 15, 2005Gavney James A JrDevice and system with moving squeegee fields
US20060000037 *Sep 2, 2005Jan 5, 2006Eyal EliavPowered toothbrush
US20060021170 *Sep 26, 2005Feb 2, 2006Gavney James A JrSqueegee device and system
US20060230563 *Jun 30, 2005Oct 19, 2006Gavney James A JrOral care device with multi-structural contact elements
US20070130705 *Oct 31, 2006Jun 14, 2007Chan John GElectric toothbrushes
US20070174978 *Apr 9, 2007Aug 2, 2007Eyal EliavPowered Toothbrush
US20090013484 *Sep 9, 2008Jan 15, 2009Michael RobertsGum Massaging Oral Brush
US20090282628 *Jun 12, 2009Nov 19, 2009The Gillette CompanyToothbrushes
US20110030158 *Oct 18, 2010Feb 10, 2011Gavney Jr James ADevice with multi-structural contact elements
US20110173765 *Apr 1, 2011Jul 21, 2011The Gillette CompanyToothbrushes
US20130174860 *Jun 10, 2011Jul 11, 2013Kao CorporationHead-hair treatment-agent applicator
USD612611Feb 17, 2009Mar 30, 2010The Gillette CompanyHead of a toothbrush
U.S. Classification15/180, 15/28, 433/166, 15/117, 433/134, 15/110
International ClassificationA46B17/08
Cooperative ClassificationA46B17/08, A46B2200/1066
European ClassificationA46B17/08