Personal care device

Patent metadata

Field	Value
Publication number	US-10470857-B2
Application number	US-201113190293-A
Country	US
Kind code	B2
Filing date	Jul 25, 2011
Priority date	Jul 23, 2010
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A personal care device having a handle having an engagement portion and a persona care attachment are described. The personal care attachment has a housing attached to the engagement portion and a contact element carrier. The contact element carrier is movably coupled to the housing. A plurality of contact elements is arranged on the contact element carrier, and wherein the personal care attachment is driven at a frequency of between about 150 Hz to about 175 Hz and has a sound intensity level of less than about 75 dB(A).

First claim

The invention claimed is:

1. A personal care device comprising:
a handle having an engagement portion;
a direct drive system disposed within the handle including a drive shaft reciprocating in a direction generally parallel to a longitudinal axis of the handle;
a personal care attachment comprising a housing attached to the engagement portion, contact element carrier and a drive member having a proximal end and a distal end, the proximal end having an attachment element, the contact element carrier being movably coupled to the housing and the drive member reciprocating in a direction generally parallel to a longitudinal axis of the personal care attachment; and
a plurality of contact elements being arranged on the contact element carrier, wherein the personal care attachment is driven at a frequency of between about 150 Hz to about 175 Hz and has a sound intensity level of less than about 75 dB (A);

wherein the attachment element includes a permanent magnet or a magetizable element; and wherein the personal care attachment has a resonance frequency which is at least 125 percent of the driving frequency of the personal care attachment.

2. The personal care device of claim 1 , wherein the personal care attachment is unloaded.

3. The personal care device of claim 1 , wherein the personal care attachment is loaded at 2 N.

4. The personal care device of claim 1 , wherein the personal care device comprises a toothbrush and wherein the personal care attachment comprise a refill.

5. The personal care device of claim 4 , wherein the contact element carrier is rotatably coupled to the housing.

6. The personal care device of claim 5 , wherein the refill is unloaded.

7. The personal care device of claim 5 , wherein the refill is loaded at 2 N.

Assignees

• Schaefer Norbert
• Schober Uwe
• Utsch Joern
• Kramp Andreas
• Ziegler Frank
• Heil Benedikt
• Huebner Marlis
• Braun Gmbh

Inventors

• Schaefer Norbert
• Schober Uwe
• Utsch Joern
• Kramp Andreas
• Ziegler Frank
• Heil Benedikt
• Hübner Marlis

Classifications

• Y10T74/18992

  Reciprocating to reciprocating · CPC title

• H02K33/10

  wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armatures · CPC title

• A61C17/3436

  Rotation around the axis perpendicular to the plane defined by the bristle holder · CPC title

• A61C17/222 Primary

  Brush body details, e.g. the shape thereof or connection to handle · CPC title

• A61C17/34

  driven by electric motor · CPC title