# US 5,345,646 A · Handbrush for cleaning protheses, particularly tooth prostheses

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- Number: US 5,345,646 A
- Document ID: US5345646A
- Status: Granted
- Kind: A
- Application number: 08/067,224
- Filed: 1993-05-26
- Granted: 1994-09-13
- Earliest claimed: 1992-05-26
- Assignees: Gebr. Rothweiler GmbH & Co. KG
- Inventors: Emil Rothweiler
- Web page: https://patentgrep.com/patent/US5345646A

## CPC

- A46B 7/04: interchangeably {removable bristle carriers}
- A46B 5/00: Brush bodies; Handles integral with brushware
- A46B 2200/1073: Denture toothbrush, i.e. used for dentures specifically
- A46B: BRUSHES (handles not integral with brushware B25G)

## Abstract

A handbrush for cleaning prostheses, in particular tooth prostheses, has a bristle support provided with a plurality of bristles and a hand gripping part connected with the bristle support. The bristle support, the bristles and the hand gripping part are recyclable as a whole and composed of sterilizable and food strap suitable synthetic plastic materials. The bristles being formed of one piece with the bristle support which has a large surface, and the bristle support is nonreleasably connected with the hand gripping part by an arresting connection.

## Claims

### Claim 1

A handbrush for cleaning a prosthesis, comprising a bristle support provided with a plurality of bristles projecting from a first surface thereof; a hand gripping part connected to said bristle support; said bristle support, said bristles and said hand gripping part being recyclable as a whole and composed of sterilizable and food-stuff suitable synthetic plastic materials; said bristles being integrally formed with said bristle support; an arresting coupling part which releasably connects said bristle support with said hand gripping part, said arresting coupling part having a plate-shaped end which is subdivided into two plate halves turnable relative to one another about a notch formed in said arresting coupling part and provided with projecting coupling web halves which are located on opposite sides of said notch and abut one another when said plate halves are in alignment with one another, said coupling web halves cooperate to form a coupling web, said hand gripping part having an opening in which said coupling web is engageable and said two plate halves further having portions thereof which are adapted to engage a groove formed in a second surface of said bristle support which is opposite said first surface.

### Claim 2 (depends on 1)

A handbrush as defined in claim 1, wherein said bristles are formed on said bristle support and are thin and pointed.

### Claim 3 (depends on 1)

A handbrush as defined in claim 1, wherein said coupling web halves each have an outer side provided with a first arresting formation, said opening having an inner surface provided with second arresting formations adapted to engage said first arresting formations when said coupling web is inserted in said opening.

### Claim 4 (depends on 3)

A handbrush as defined in claim 3, wherein one of the first and second arresting formations is formed as an arresting groove, while the other of said first and second arresting formations is formed as an arresting projection.

### Claim 5 (depends on 1)

As defined in claim 1, wherein said gripping part has a liquid-tight sealing formation which is adapted to engage a portion of said bristle support.

### Claim 6 (depends on 5)

As defined in claim 5, wherein said sealing formation is formed as a sealing bead.

### Claim 7 (depends on 1)

As defined in claim 1 , wherein said bristle support has an edge web provided with a fluid-tight sealing formation adapted to engage a portion of said hand gripping part.

### Claim 8 (depends on 7)

As defined in claim 7, wherein said sealing formation is formed as a sealing bead.

### Claim 9 (depends on 1)

As defined in claim 1, wherein said hand gripping part has an elongated substantially spherical rear portion and gripping troughs on opposite sides of said hand gripping part and located between said rear portion and said bristle support.