US3214776A - Mechanically operable brush - Google Patents

Mechanically operable brush Download PDF

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Publication number
US3214776A
US3214776A US32772063A US3214776A US 3214776 A US3214776 A US 3214776A US 32772063 A US32772063 A US 32772063A US 3214776 A US3214776 A US 3214776A
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Prior art keywords
brush
shaft
arm
crank
body
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Expired - Lifetime
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Bercovitz Louis
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LOUBER CORP
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LOUBER CORP
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16Power-driven cleaning or polishing devices
    • A61C17/22Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B13/00Brushes with driven brush bodies or carriers
    • A46B13/08Brushes with driven brush bodies or carriers hand-driven
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/18Mechanical movements
    • Y10T74/18888Reciprocating to or from oscillating

Description

Nov. 2, 1965 L. BERCOVITZ 3,214,776

MECHANICALLY OPERABLE BRUSH Filed Dec. 3, 1963 2 Sheets-Sheet 1 INVENTOR A23 Louis BERCOVITZ ATTORNEY Nov. 2, 1965 L. BERCOVITZ MECHANICALLY OPERABLE BRUSH 2 Sheets-Sheet 2 Filed Dec. 3, 1965 INVENTOR Louis BERCOVITZ PATENT AGENTS ATTORNEY United States Patent Office 3,214,776 Patented Nov. 2, 1965 3,214,776 MECHANICALLY OPERABLE BRUSH Louis Bercovitz, Montreal, Quebec, Canada, assignor to Louber Corporation, Montreal, Quebec, Canada Filed Dec. 3, 1963, Ser. No. 327,720 12 Claims. (Cl. 1526) This invention relates to a hand-actuated oscillatable mechanical brush, and is specially applicable to toothbrushes.

Mechanical toothbrushes, in which there is an oscillating movement of the brush are known in the prior art. Most of these devices have been relatively complicated. Many have employed electrical motive power or other complex drive mechanism and have been outside the realm of practically for one reason, or another.

It is an aim of the present invention to provide a toothbrush of simple practical construction which is oscillatable manually, by squeezing to give a radially rotating recipro cal motion to the brush, so that the bristles can be moved up and down the teeth and in the interstices thereof, as prescribed by dentists while the hand is kept relatively in the same position. Briefly, a toothbrush according to the invention comprises a one-piece bow member which has as integral parts an elongated main body having a socket receiving the end of a brush shaft, and a spaced apart lever arm articulated thereto by a resilient elbow normally urging it away from the body. The crank arm has a crank connection with the brush shaft so that when the crank arm is squeezed toward the body and allowed to return to its at rest position, a reciprocal rotary motion is given to the brush shaft. The material from which the device is made is sufliciently resilient at the elbow which is thin, but stiff enough so that the thick parts like the body and crank arm are substantially rigid.

The invention is illustrated in the accompanying drawings in which:

FIGURE 1 is a side elevation of the preferred form of toothbrush showing the initial position of the hand.

FIGURE 2 is a front elevation of the toothbrush of FIGURE 1 showing the position of the hand and the varions positions of the toothbrush in action.

FIGURE 3 is a cross-section of the toothbrush along the line 33 of FIGURE 11.

FIGURE 4 is a vertical cross-section along the axis, partly in elevation, of the toothbrush shown in FIG- URE 1.

FIGURE 5 is an exploded perspective view showing the various parts of the toothbrush.

FIGURE 6 is a fragmentary detail view showing another way of mounting the crank on the shaft of the toothbrush.

FIGURE 7 is a side elevation showing an auxiliary denture brush attachment.

FIGURE 8 is a cross-section as along the line 8-8 of FIGURE 7.

FIGURE 9 is a similar cross-section to FIGURE 8 showing the spring action of the auxiliary denture brushretaining clip.

FIGURE 10 is an enlarged schematic front elevation showing the movement of the brush relative to teeth and gums.

Referring more particularly to the drawings, the structure of the preferred toothbrush shown in FIGURES 1 to 5 is as follows. It includes a one-piece bow A, manipulable by squeezing, and made up of a body having at its forward end a thumb rest 39, and merging at its rear end into an integral curved flexible ligament 17 integrally connected to a lever 19 extending abreast of the body 15 and spaced apart from it. The forward end of the lever 19 is provided with a finger 21 which extends inwardly toward the front of the body 15.

In the preferred form shown, the bow A is made of solid plastic material which is rigid at the thick parts but sufficiently resilient at the ligament 17 to allow flexing. The bow A is made so that the lever 19 is normally biased away from the position shown in FIGURE 1, as for example, shown in FIGURE 5, so that the lever 19 has to be urged under pressure against the resilience of the ligament 17 to assume the position shown in FIGURE 1. The lever 19 is preferably provided with finger indentations 23.

The body 15 is provided with a lengthwise extending bore 25 constituting a socket receiving rotatably the inner end of a shaft 27 which, at its outer end, carries a brush 29 of the toothbrush type.

Extending laterally from the shaft 25 is a crank arm 31 carrying a forwardly extending crank pin 33 which ongages in an opening 35 in the end of the finger 21. A part collar 37 extends forwardly at the forward end of the body 15', as best shown in FIGURE 5, about a radius of somewhat less than The ends of the collar 37 constitute stops to limit the oscillatory movement of the shaft 27 in either radial direction, in the lower direction to retain the crank arm to one side so that it will respond to an upward pull and in the upper direction so that the arm 21 does not strike the shaft 27, although the latter is not necessary as the shaft 27 will limit further upward movement of the arm 21.

The shaft 27 is thus normally held in the position it assumes, with the crank arm 31 downmost because it is urged to this position by the resiliency of the bow A.

In operation, the bow A is alternatively squeezed and released between the thumb and fingers, as will be clear from FIGURE 1. Moving the lever 19 relative to the body 15, this oscillates the shaft 27 radially and consequently the brush 29 radially back and forth as shown in FIGURE 2.

The shaft 27 can be made from a plastic material and the arm 31 and its pin 33 cast integrally with it. In an alternative construction shown in FIGURE 6, the crank arm 131 and pin 133 form the part of a metal member one end of which is embedded in the shaft 127, as shown in FIGURE 6.

A denture brush 241 (FIGURES 7 to 10) mounted on elongated shell clip 243 is shown attached to the body 15. This brush can be removed from the body, as shown in FIGURE 9 or it can be rotated to 180 so as to protrude from the body and the bow A used as a handle when applying the denture brush to brushing dentures.

The exact structures of the toothbrush, its parts and subcombinations are capable of variation within the spirit of the invention. In the preferred forms of toothbrush shown the brush shaft is a male part which enters a female part. The opposite could be true and the brush shaft could be provided with a female part which engages with a male part extending from the body. Likewise, the crank pin could be reversed and applied to the operating finger, instead of the opposite, as shown.

The bow-like handle is made of a single piece of plastic material (desirably by molding), as shown. Nylon is one suitable plastic material, but other material may be used, as will be understood by one skilled in the art. It is also preferable that the brush shaft 27 and its crank arm 31 and pin 33 be an integral plastic molded piece, although this structure can be varied. The pin 133 should be parallel to the shaft 127 in order to give good action. The device may be relatively inexpensive and is practical, simple, and foolproof. The bow-like handle member is believed to be new, of itself.

I claim:

1. A brush, comprising, a brush shaft, a one-piece bowlike squeeze handle having an elongated rigid body including means for receiving said brush shaft at one end and at the other end a flexible resilient elbow merging into an arm extending abreast and spaced from the body, and crank means operatively connecting the part of the arm remote from the elbow with said brush shaft whereby reciprocal movement is imparted to the brush shaft when the arm is squeezed towards the body and released.

2. A brush, as defined in claim 1, said crank means comprising a crank extending laterally from said brush shaft and a crank pin extending forward from said crank, said arm terminating at the end remote from said el bow in a finger extending towards said body and provided with an opening engaging the pin on said crank shaft. 3. A brush, as defined in claim 1, in which the said one end of the body includes a bore receiving the brush shaft and a semi-collar at the end of the bore with a gap, and a crank extending from said brush shaft and provided with a crank pin, said crank being accommodated by said gap and a finger extending from said arm and provided with an opening receiving said crank pin.

4. A brush, as defined in claim 1, in which the handle at said one end includes a bore receiving the end of the brush shaft.

5. A brush, as defined in claim 1, in which said arm is provided with spaced-apart indentations for receiving the fingers and said body is provided at the side remote from the arm with a boss for resting the thumb.

6. A brush comprising, in combination, a rotatable brush shaft and a one-piece handle member for mounting said rotatable brush shaft, said member comprising, an elongated overall cylindrical body including a front part provided with a bore adapted to receive a brush shaft for reciprocal rotating movement and a rearv part merging into an integral elbow merging into an integral arm extending abreast of the body and spaced therefrom, said arm terminating in a finger extending inwardly toward the front end of the body and being provided near its end with an opening adapted to engage a crank pin on the brush shaft, said elbow being a relatively thin U-shaped part and being resilient from a first position in which the finger is relatively removed from the body to a second position in which the finger is relatively close to the body, said elbow being resilient to urge the arm to said first position, said body, arm and finger being substantially rigid parts.

7. A brush, as defined in claim 6, in which the side of the arm remote from the body is provided with finger receiving indentations and the front end of the body at the side remote from the arm'is provided with a thumb rest.

8. A brush, as defined in claim 1 in which said handle is molded from plastic material.

9. A brush member for-a rotary brush of the type described, comprising a shaft having a brush at one end thereof and a portion at the other end thereof forming a shank adapted to engage a socket, a crank arm extending laterally of said shaft at a location intermediate said one and other ends, said crank arm having a free end and an end joined to said shaft, and a crank pin extending parallel to said shaft from said free end of said crank arm, said shaft, crank arm and crank pin being integrally moulded from plastic material.

10. A brush member for a rotary brush of the type I described, comprising a shaft of moulded plastic material having a brush at one end thereof and a portion at the other end thereof forming a shank adapted to engage a socket, a crank arm extending laterally of said shaft at a location intermediate said one and other ends, said crank arm being a metallic piece having one of its ends embedded in the plastic material constituting said shaft and its other end free, and a crank pin integral with said crank arm and extending parallel to said shaft.

11. A toothbrush comprising, in combination, a onepiece handle, and a one-piece brush element including a shaft and a crank and crank pin integral with said shaft, said handle comprising an elongated rigid body having one and other ends, an arm extending abreast and spaced apart from said body and having one and other ends, a relatively resilient, flexible elbow merging at one of its ends with said one end of said body and at the other of its ends with said one end of said arm, a socket at said other end of said body adapted to receive said shaft, and a finger extending from a part of said arm remote from said one end and co-acting with said crank pin whereby reciprocating movements of said arm towards and away from said body produce oscillating rotary movements of said shaft.

12. A toothbrush according to claim 11 in which I said brush element comprises bristles having free ends terminating at substantially constant distance from the axis of said shaft.

References Cited by the Examiner UNITED STATES PATENTS 1,257,883 2/18 Kone 15 26 2,232,269 2/41 Rueben 15l67 X 3,072,938 1/63 Phaneuf 1522 CHARLES A. WILLMUTH, Primary Examiner.

Claims (1)

1. A BRUSH, COMPRISING, A BRUSH SHAFT, A ONE-PIECE BOWLIKE SQUEEZE HANDLE HAVING AN ELONGATED RIGID BODY INCLUDING MEANS FOR RECEIVING SAID BRUSH AT ONE END AND AT THE OTHER END A FLEXIBLE RESILIENT ELBOW MERGING INTO AN ARM EXTENDING ABREAST AND SPACED FROM THE BODY, AND CRANK MEANS OPERATIVELY CONNECTING THE PART OF THE
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430502A (en) * 1967-07-20 1969-03-04 Eduard Yakovlevich Filatov Mechanism converting torsional vibration into linear one
US3771190A (en) * 1971-09-15 1973-11-13 Empire Brushes Inc Applicator
US4605020A (en) * 1985-02-19 1986-08-12 Michel Lavoie Comb
US4654921A (en) * 1984-10-17 1987-04-07 Dinner Mark E W Toothbrushes
US5048143A (en) * 1990-10-23 1991-09-17 Carroll David T Teething brush
US5213434A (en) * 1990-11-29 1993-05-25 Rowenta-Werke Gmbh Work device shaft for the electric drive mechanism of a toothbrush
US5291878A (en) * 1992-07-14 1994-03-08 Steve Lombardo Baby teething gum massager
US5511273A (en) * 1995-08-22 1996-04-30 Preventive Dental Specialties, Inc. Variable engagement toothbrush
US6110174A (en) * 1992-06-12 2000-08-29 Larry S. Nichter Method of fixating bone by driving a wire through oscillation
US6289546B1 (en) 1999-03-29 2001-09-18 Stephen D. Harada Toothbrush and method of fabricating same
US6941607B1 (en) 2003-01-20 2005-09-13 Michael E Berglass Jewelry toothbrush
US20070143943A1 (en) * 2005-12-23 2007-06-28 Dawes Jeffrey L Toothbrush Having Pivoting Head
US20100293733A1 (en) * 2009-05-20 2010-11-25 Hebebrand Scott T Toothbrush
US20120285277A1 (en) * 2010-01-22 2012-11-15 Jeong-Pyo Kim Mechanical toothbrush

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1257883A (en) * 1917-09-06 1918-02-26 Henry H Kome Rotary tooth-brush.
US2232269A (en) * 1939-03-27 1941-02-18 Zale A Reuben Toothbrush
US3072938A (en) * 1961-09-07 1963-01-15 Gen Electric Power operated toothbrush

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1257883A (en) * 1917-09-06 1918-02-26 Henry H Kome Rotary tooth-brush.
US2232269A (en) * 1939-03-27 1941-02-18 Zale A Reuben Toothbrush
US3072938A (en) * 1961-09-07 1963-01-15 Gen Electric Power operated toothbrush

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430502A (en) * 1967-07-20 1969-03-04 Eduard Yakovlevich Filatov Mechanism converting torsional vibration into linear one
US3771190A (en) * 1971-09-15 1973-11-13 Empire Brushes Inc Applicator
US4654921A (en) * 1984-10-17 1987-04-07 Dinner Mark E W Toothbrushes
US4605020A (en) * 1985-02-19 1986-08-12 Michel Lavoie Comb
US5048143A (en) * 1990-10-23 1991-09-17 Carroll David T Teething brush
US5213434A (en) * 1990-11-29 1993-05-25 Rowenta-Werke Gmbh Work device shaft for the electric drive mechanism of a toothbrush
US6110174A (en) * 1992-06-12 2000-08-29 Larry S. Nichter Method of fixating bone by driving a wire through oscillation
US5291878A (en) * 1992-07-14 1994-03-08 Steve Lombardo Baby teething gum massager
US5511273A (en) * 1995-08-22 1996-04-30 Preventive Dental Specialties, Inc. Variable engagement toothbrush
US6289546B1 (en) 1999-03-29 2001-09-18 Stephen D. Harada Toothbrush and method of fabricating same
US6941607B1 (en) 2003-01-20 2005-09-13 Michael E Berglass Jewelry toothbrush
US20070143943A1 (en) * 2005-12-23 2007-06-28 Dawes Jeffrey L Toothbrush Having Pivoting Head
US7735179B2 (en) 2005-12-23 2010-06-15 Dawes Jeffrey L Toothbrush having pivoting head
US20100293733A1 (en) * 2009-05-20 2010-11-25 Hebebrand Scott T Toothbrush
US20120285277A1 (en) * 2010-01-22 2012-11-15 Jeong-Pyo Kim Mechanical toothbrush
JP2013517831A (en) * 2010-01-22 2013-05-20 キム,チョンピョ Mechanical toothbrush

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