WO1992008390A2 - Brush including spring-mounted bristle holders - Google Patents

Brush including spring-mounted bristle holders Download PDF

Info

Publication number
WO1992008390A2
WO1992008390A2 PCT/US1991/008558 US9108558W WO9208390A2 WO 1992008390 A2 WO1992008390 A2 WO 1992008390A2 US 9108558 W US9108558 W US 9108558W WO 9208390 A2 WO9208390 A2 WO 9208390A2
Authority
WO
WIPO (PCT)
Prior art keywords
strip
bristle holders
extending
brush
brush head
Prior art date
Application number
PCT/US1991/008558
Other languages
French (fr)
Other versions
WO1992008390A3 (en
Inventor
Netta Holland
Original Assignee
Paz, Ohad
Nathanson, Dan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to IL96413 priority Critical
Priority to IL9641390A priority patent/IL96413D0/en
Priority to US627,098 priority
Priority to US07/627,098 priority patent/US5184368A/en
Application filed by Paz, Ohad, Nathanson, Dan filed Critical Paz, Ohad
Priority claimed from RU93043105A external-priority patent/RU2071715C1/en
Publication of WO1992008390A2 publication Critical patent/WO1992008390A2/en
Publication of WO1992008390A3 publication Critical patent/WO1992008390A3/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B7/00Bristle carriers arranged in the brush body
    • A46B7/06Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B2200/00Brushes characterized by their functions, uses or applications
    • A46B2200/10For human or animal care
    • A46B2200/1066Toothbrush for cleaning the teeth or dentures

Abstract

A brush (2) including spring-mounted bristle holders (10) in which the springs (16') are formed from a planar strip (12) of elastic material stamped with a plurality of spirally-extending slits at spaced locations underlying each of the bristle holders (10), to define a spirally-extending element integrally formed with the strip (12) and in the same plane as the strip (12). Each of the spirally-extending elements is pressed out of the plane of the strip (12) to produce a helically-extending spring element (16') underlying each of the bristle holders (10) and decreasing in diameter from the strip (12) to the bristle holder (10).

Description

BRUSH INCLUDING SPRING-MOUNTED BRISTLE HOLDERS The present invention relates to a brush including spring-mounted bristle holders. The invention is particularly useful in toothbrushes, and is therefore described below with respect to this application.

The advantages of providing spring-mounted bristle holders in brushes generally, and toothbrushes specifically, have long been recognized, and a number of patents describe various brush constructions for this purpose. For example, brush constructions including various types of spring-mounted bristle holder are described in US Patents 2,882,544, 2,935,755, 3,082,457, 3,386,118, 3,683,442, 4,240,451, 4,240,452, 4,633,542 and 4,694,844. However, insofar as I am aware, none of these constructions has found widespread commercial use, presumbly because of the limited bristle holder displacements permitted by the brush construction, the short useful life of the brush construction, and/or the relatively large expense required to produce the brush construction.

An object of the present invention is to provide a novel brush construction including spring- mounted bristle holders having advantages in one or more of the above respects. According to the present invention, there is provided a brush including a handle at one end and a brush head at the opposite end, the brush head including a plurality of bristle holders and spring means normally urging the bristle holders outwardly but permitting their inward movement during use of the brush head; characterized in that the spring means comprises: a planar strip of elastic material stamped with a plurality of spirally-extending slits at spaced locations of the planar strip underlying each of the bristle holders, to define a spirally-extending element integrally formed with the strip at each of the locations and in the same plane as the strip; each of the spirally-extending elements being pressed out of the plane of the strip to produce a helically-extending spring element underlying each of the bristle holders and decreasing in diameter from the strip to the bristle holder.

Brushes, and particularly toothbrushes, constructed in accordance with the foregoing features provide a number of advantages over the prior-known devices. Thus, they permit large displacements and high density of the bristle holders, thereby increasing the efficiency of the brushing action; they provide a relatively long useful life; and they are inexpensive to produce in volume and at low cost. Further features and advantages of the invention will be apparent from the description below.

The invention is herein described by way of example only, with reference to the accompanying drawings, wherein:

Fig. 1 is a fragmentary sectional view illustrating one form of toothbrush constructed in accordance with the present invention;

Fig. 2 is an exploded view more particularly illustrating the construction of the toothbrush of Fig.

1;

Fig. 3 is a top plan view illustrating the spring member included in the brush of Figs. 1 and 2; and

Fig. 4 is a fragmentary view illustrating a variation in the construction of the toothbrush.

The toothbrush illustrated in Figs. 1-3 comprises a handle 2 at one end, and a brush head 4 at the opposite end. The brush head 4 is formed with a plurality of sockets 6 each receiving a plurality of bristles 8 mounted within bristle holders 10 slidable within their respective sockets 6 so as to permit the bristle holders 10 to be individually moved either to an extended position, as illustrated in Fig. 1, or to a retracted position within their respective sockets. The illustrated brush head further includes a spring mounting cooperable with all the bristle holders 10 normally urging all the bristle holders outwardly to their extended positions in order to press the bristles 8 against the surface being brushed, but permit each bristle holder to be individually moved to its retracted position within its respective socket 6, according to the pressure applied by the respective bristles 8 to the surface being brushed. By thus spring-mounting the bristle holders 10 for individual movement, the bristles more effectively penetrate into all the crevices of the teeth and between the teeth, thereby producing an efficient brushing action. In addition, when the bristle holders are pressed inwardly during a brushing action, they stiffen the bristles, thereby further enhancing the brushing action.

The spring mounting for the bristle holders 10 comprises a planar strip 12 of elastic material stamped with a plurality of spirally-extending slits 14 (Fig. 3) at spaced locations of the strip to underlie each of the bristle holders 10. The spiral-slits 14 thus define a plurality of spirally-extending elements 16 integrally formed with the strip 12 and in the same plane as the strip. After the strip is so formed, each of the spirally-extending elements 16 is pressed out of the plane of the strip 12, such that the spirally- extending elements 16 now becomes helically-extending spring elements, as shown at 16' in Fig. 2, decreasing in diameter from the strip 12 to its outer end to engage its respective bristle holder 10, as more particularly shown in Fig. 1.

The brush head 4 is preferably made of suitable plastic material, as by injection molding, and is formed with a plurality of openings 18, one for each of the sockets 6 and communicating with the upper end of its respective socket. The opposite side of the brush head 4 is closed by a cover plate 20 formed with a drain opening 22 for each socket 6.

Preferably, the strip 12 is made of hard springy material, such as stainless steel, although it is contemplated that hard plastic material, such as hard nylon, may also be used. The helically-extending spring elements 16' permit a very large displacement of the bristle holders 10 for any given thickness of brush head 4 since the spring elements may be deformed back into the plane of the elastic strip 12, thereby avoiding any "dead space" within their respective sockets 6. In addition, such a construction enables a relatively high density of bristles and provides a relatively long useful life for the brush head. Moreover, since the spring elements 16' are produced by merely stamping the strip 12 and pressing the elements outwardly, such a construction can be produced in volume and at low cost.

Fig. 4 illustrates a variation in the construction of the toothbrush, also including a handle 102 and a brush head 104 having three rows of bristle holders. In this case, however, each bristle holder 110 in the middle row is urged outwardly by a spring 112, whereas the bristle holders 108 in the two outer rows are fixed to the brush head 104.

While the invention has been described with respect to two preferred embodiments, it will be appreciated that these are set forth merely for purposes of example. Thus, there may be a different number of rows of bristle holders, some or all of which may be spring-mounted. Also, the springs used in some rows may be lighter than those used in other rows. Further, the invention could be included in other types of bristles. Many other variations, modifications and applications of the invention wil be apparent.

Claims

WHAT IS CLAIMED IS:
1. A brush including a handle at one end and a brush head at the opposite end, said brush head including a plurality of bristle holders and spring means normally urging the bristle holders outwardly but permitting their inward movement during use of the brush head; characterized in that said spring means comprises: a planar strip of elastic material stamped with a plurality of spirally-extending slits at spaced locations of the planar strip underlying each of said bristle holders, to define a spirally-extending element integrally formed with said strip at each of said locations and in the same plane as said strip; each of said spirally-extending elements being pressed out of the plane of said strip to produce a helically- extending spring element underlying each of said bristle holders and decreasing in diameter from said strip to the bristle holder.
2. The brush according to Claim 1 , wherein said brush head is formed with a plurality of sockets each receiving one of said bristle holders, which bristle holders are urged outwardly of their respective sockets by their underlying helically-extending spring elements.
3. The brush according to Claim 1 , wherein said brush head includes at least two rows of bristle holders spring-urged outwardly by said spring means and separated by a row of bristle holders fixed to the brush head.
4. The brush according to any one of Claims 1-3/ wherein said strip of elastic material is of stainless steel.
PCT/US1991/008558 1990-11-20 1991-11-18 Brush including spring-mounted bristle holders WO1992008390A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IL96413 1990-11-20
IL9641390A IL96413D0 (en) 1990-11-20 1990-11-20 Brush including spring-mounted bristle holders
US627,098 1990-12-13
US07/627,098 US5184368A (en) 1990-11-20 1990-12-13 Toothbrushes

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE1991627475 DE69127475D1 (en) 1990-11-20 1991-11-18 Brush with spring brush holder
JP50195192A JPH06505889A (en) 1990-11-20 1991-11-18
RU93043105A RU2071715C1 (en) 1990-11-20 1991-11-18 Brush with spring-biased pile holders
DE1991627475 DE69127475T2 (en) 1990-11-20 1991-11-18 Brush with spring brush holder
EP19920900513 EP0669813B1 (en) 1990-11-20 1991-11-18 Brush including spring-mounted bristle holders
AU90788/91A AU660955B2 (en) 1990-11-20 1991-11-18 Brush including spring-mounted bristle holders

Publications (2)

Publication Number Publication Date
WO1992008390A2 true WO1992008390A2 (en) 1992-05-29
WO1992008390A3 WO1992008390A3 (en) 1992-10-01

Family

ID=26322168

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/008558 WO1992008390A2 (en) 1990-11-20 1991-11-18 Brush including spring-mounted bristle holders

Country Status (7)

Country Link
EP (1) EP0669813B1 (en)
JP (1) JPH06505889A (en)
AT (1) AT157227T (en)
AU (1) AU660955B2 (en)
CA (1) CA2096234A1 (en)
DE (2) DE69127475D1 (en)
WO (1) WO1992008390A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3501332A1 (en) * 2017-12-21 2019-06-26 Innotech Appliance Limited A toothbrush

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1189505A (en) * 1915-11-12 1916-07-04 Lincoln C Stockton Tooth-brush.
US2882544A (en) * 1957-10-23 1959-04-21 Puzant H Hadidian Tooth brush
US2935755A (en) * 1955-10-14 1960-05-10 Leira Alberto Ramon Tooth-brushes and the like
US3082457A (en) * 1961-05-26 1963-03-26 Florio R Lucibello Self-adapting tufts for brushes
US3683442A (en) * 1971-04-05 1972-08-15 Hollymatic Corp Toothbrush
US4240452A (en) * 1979-09-13 1980-12-23 Jean San Bau Elastic base toothbrush
US4633542A (en) * 1984-04-13 1987-01-06 Laboratoires Pharmascience Brush having resiliently retractable bristles, in particular for brushing surfaces of complex shape, such as teeth
US4694844A (en) * 1984-02-27 1987-09-22 Berl Marta N Toothbrush

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683441A (en) * 1970-01-13 1972-08-15 Richard H Fromme Vehicle cleaning device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1189505A (en) * 1915-11-12 1916-07-04 Lincoln C Stockton Tooth-brush.
US2935755A (en) * 1955-10-14 1960-05-10 Leira Alberto Ramon Tooth-brushes and the like
US2882544A (en) * 1957-10-23 1959-04-21 Puzant H Hadidian Tooth brush
US3082457A (en) * 1961-05-26 1963-03-26 Florio R Lucibello Self-adapting tufts for brushes
US3683442A (en) * 1971-04-05 1972-08-15 Hollymatic Corp Toothbrush
US4240452A (en) * 1979-09-13 1980-12-23 Jean San Bau Elastic base toothbrush
US4694844A (en) * 1984-02-27 1987-09-22 Berl Marta N Toothbrush
US4633542A (en) * 1984-04-13 1987-01-06 Laboratoires Pharmascience Brush having resiliently retractable bristles, in particular for brushing surfaces of complex shape, such as teeth

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0669813A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3501332A1 (en) * 2017-12-21 2019-06-26 Innotech Appliance Limited A toothbrush

Also Published As

Publication number Publication date
EP0669813A4 (en) 1993-08-13
EP0669813A1 (en) 1995-09-06
AT157227T (en) 1997-09-15
AU9078891A (en) 1992-06-11
AU660955B2 (en) 1995-07-13
EP0669813B1 (en) 1997-08-27
CA2096234A1 (en) 1992-05-21
DE69127475D1 (en) 1997-10-02
WO1992008390A3 (en) 1992-10-01
JPH06505889A (en) 1994-07-07
DE69127475T2 (en) 1998-04-02

Similar Documents

Publication Publication Date Title
US9504312B2 (en) Oral hygiene implements having flexible elements, and methods of making the same
USRE38521E1 (en) Toothbrush with resiliently flexible head
EP2060201B1 (en) Toothbrush and method for production of such a toothbrush
EP1240846B1 (en) Tootbrush
KR100397825B1 (en) toothbrush
US4488328A (en) Floating head toothbrush
RU2334445C2 (en) Tooth-brush, head of tooth-brush and method for manufacturing tooth-brush
CA2361549C (en) Toothbrush head with flexibly mounted bristles
US4829621A (en) Toothbrush
KR101015355B1 (en) Toothbrush
US8166601B2 (en) Electric toothbrush head
CA2848478C (en) Toothbrush with enhanced cleaning effects
US3295156A (en) Toothbrush
TWI282727B (en) Contouring toothbrush head
US6402768B1 (en) Device for cleaning a human tongue
KR101355331B1 (en) Oral care implement having one or more moving sections
EP2409597B1 (en) Toothbrush
US1142698A (en) Combination-brush.
KR100581197B1 (en) All-sided mouthbrush
US3129449A (en) Toothbrush with shuttingly oscillatingly and rotatingly movable cleaning and massaging elements
US2702914A (en) Toothbrush
RU2359595C2 (en) Tooth brushes
EP1887908B1 (en) Toothbrush
AU2001261646B2 (en) Toothbrush having an efficacious bristle pattern
DE69735595T2 (en) Toothbrush

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR CA CH CS DE DK ES FI GB HU JP KP KR LK LU MC MG MN MW NL NO PL RO SD SE SU

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE BF BJ CF CG CH CI CM DE DK ES FR GA GB GN GR IT LU ML MR NL SE SN TD TG

WWE Wipo information: entry into national phase

Ref document number: 1992900513

Country of ref document: EP

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE BF BJ CF CG CH CI CM DE DK ES FR GA GB GN GR IT LU ML MR NL SE SN TD TG

CFP Corrected version of a pamphlet front page
AK Designated states

Kind code of ref document: A3

Designated state(s): AT AU BB BG BR CA CH CS DE DK ES FI GB HU JP KP KR LK LU MC MG MN MW NL NO PL RO SD SE SU

ENP Entry into the national phase in:

Ref country code: CA

Ref document number: 2096234

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 2096234

Country of ref document: CA

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1992900513

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1992900513

Country of ref document: EP