US5651157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric toothbrush with vibration
Assignee: Rowenta Werke GmbH
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Filing: 1996-09-17
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Granted: 1997-07-29
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Expires: 2016-09-17
Abstract
Abstract An electric toothbrush having a handle with a cavity therein, a motor mounted in the cavity of the handle and having a rotatable shaft, a brush head, and a shaft arranged to connect the brush head to the handle. An eccentric weight is mounted to the motor shaft so as to rotate eccentrically when the motor shaft rotates so that the brush handle vibrates. A further weight is mounted to the shaft so as to be axially movable by a manipulator for adjusting vibration of the brush head.
Inventors
- 👤 Matthias Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:39
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/16; A61C17/22; A61C17/32; A61C17/34; A61C17/3409; A61C17/3481
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
104 words
An electric toothbrush, comprising: a handle having a cavity therein; a motor mounted in the cavity of the handle and having a rotatable motor shaft; a brush head; an elongated connecting shaft having a first end to which the brush head is connected, and a second end connected to the handle; a weight eccentrically mounted on the motor shaft with respect to the motor shaft axis so as to rotate eccentrically when the motor shaft rotates so that the brush head vibrates; a second weight mounted to the connecting shaft so as to be axially movable; and manipulator means for moving the second weight.
Claim 2
Dependent Claim
104 words
An electric toothbrush, comprising: a handle having a cavity therein; a motor mounted in the cavity of the handle and having a rotatable motor shaft; a brush head; an elongated connecting shaft having a first end to which the brush head is connected, and a second end connected to the handle; a weight eccentrically mounted on the motor shaft with respect to the motor shaft axis so as to rotate eccentrically when the motor shaft rotates so that the brush head vibrates; a second weight mounted to the connecting shaft so as to be axially movable; and manipulator means for moving the second weight.
Claim 3
Dependent Claim
60 words
An electric toothbrush as defined in claim 1, wherein the connecting shaft has a wall that defines an axially extending interior space, the connecting shaft wall having a slot therein, the second weight being mounted to the connecting shaft in the interior space and the manipulator means being connected to the second weight so as to extend through the slot.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-28 | 2001-01-27 | 2001-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-28 | 2005-01-27 | 2005-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-28 | 2009-01-27 | 2009-07-29 | $7700.00 | Window Closed / Lapsed |