Accessory device for toothbrushes

• US 5,689,850 A
• Filed: 12/27/1995
• Issued: 11/25/1997
• Est. Priority Date: 12/30/1994
• Status: Expired due to Fees

• Current Assignee: Eureka Technologies Innovation Engineering (1987) Ltd.
• Original Assignee: Eureka Technologies Innovation Engineering (1987) Ltd.
• Inventors: Shekalim, Avraham
• Primary Examiner(s): SOOHOO, TONY GLEN
• Application Number:
  US08/579,099
• Time in Patent Office: 699 Days
• Field of Search: 15/22.1, 15/22.2, 15/22.4, 15/176.1, 15/176.6, 15/145, 279/23.1
• US Class Current: 15/22.1
• CPC Class Codes: A46B 13/02 power-driven carriers
• CPC Class Codes: A61C 17/3436 Rotation around the axis perpendicular to the plane defined by the bristle holder
• CPC Class Codes: A61C 2204/002 using batteries

Abstract

An accessory device for use with a conventional toothbrush having a handle at one end and bristles at the opposite end, includes a housing of a size and configuration to be grippable by a user'"'"'s hand, a holder pivotally mounted within the housing and removably receiving the handle of a conventional toothbrush with the bristles of the toothbrush projecting externally of the housing, and a drive coupled to the holder for cyclically pivotting the holder and the toothbrush held thereby.

Claims

1. An accessory device for use with a toothbrush having a handle at one end and bristles at the opposite end, said device comprising:

a housing grippable by a user'"'"'s hand and having a longitudinal axis;

a holder mounted by a pivotal mounting within the housing and having a longitudinal axis parallel to the longitudinal axis of the housing, said holder having an open end for removably receiving the handle of a toothbrush with the bristles of the toothbrush projecting externally of the housing;

a leaf spring secured at one end to the holder adjacent to the open end of the holder and extending within the holder parallel to the longitudinal axis of the holder, said leaf spring being formed with a deformable projection extending inwardly of the holder and engageable with the handle of a toothbrush when inserted into the open end of the holder, the opposite end of the leaf spring being unsecured so as to slidably engage the inner surface of the holder;

and a drive carried by said housing and coupled to said holder for cyclically pivotting said holder and the toothbrush held thereby.

2. The device according to claim 1, wherein said one end of the leaf spring is secured to the holder by a fastener passing through the leaf spring and the holder adjacent to the open end of the holder.

3. The device according to claim 2, wherein said inwardly extending projection of the leaf spring is adjacent to the open end of the holder and is of relatively long axial length, said leaf spring being formed with a second inwardly extending projection adjacent to said opposite end of the leaf spring and of shorter axial length than said first-mentioned projection.

4. The device according to claim 1, wherein said drive includes a rotary motor within the housing, and an eccentric coupling which couples the rotary motor to the holder.

5. The device according to claim 4, wherein said pivotal mounting of the holder is in the form of a ring of elastomeric material between the open end of the holder and an inner surface of the housing, permitting the holder and the toothbrush held thereby to pivot about two orthogonal axes perpendicular to said longitudinal axis of the housing, while at the same time sealing the interior of the housing.

6. The device according to claim 5, wherein the end of the holder opposite to its open end is closed by an end wall, said eccentric coupling comprising a pin rotated eccentrically by said motor and received within a slot formed in said end wall of the holder.

7. The device according to claim 4, wherein said housing further includes a battery compartment for receiving electrical batteries to power said motor.

8. The device according to claim 7, wherein said housing further includes a partition wall extending longitudinally within the housing parallel to the longitudinal axis of the housing and dividing its interior into said battery compartment, and a second compartment for said holder, electric motor and eccentric coupling.

9. An accessory device for use with a toothbrush having a handle at one end and bristles at the opposite end, said device comprising:

a housing grippable by a user'"'"'s hand and having a longitudinal axis;

a holder mounted by a pivotal mounting within the housing and having a longitudinal axis parallel to the longitudinal axis of the housing, said holder having an open end for removably receiving a handle of a hand-held toothbrush with the the bristles of the toothbrush projecting externally of the housing, said holder including a retainer member for releasably gripping the toothbrush handle when inserted through the open end of the holder; and

a drive carried by said housing and coupled to said holder for cyclically pivoting said holder and the toothbrush held thereby, said drive including an electric rotary motor within the housing, and an eccentric coupling which couples the rotary motor to the holder;

said housing including a partition wall extending longitudinally within the housing parallel to the longitudinal axis of the housing and dividing its interior into a battery compartment for receiving an electrical battery to power said motor, and a second compartment for said holder, electric motor and eccentric coupling,

wherein said retainer member is a leaf spring secured at one end to the holder adjacent to its open end and extending within the holder parallel to its longitudinal axis, said leaf spring being formed with a deformable projection extending inwardly of the holder and engageable with the handle of the toothbrush when inserted into the open end of the holder,

wherein said one end of the leaf spring is secured to the holder by a fastener passing through the leaf spring and the holder adjacent to the open end of the holder, the opposite end of the leaf spring being unsecured and slidably engaging the inner surface of the holder.

10. The device according to claim 9, wherein said inwardly extending projection of the leaf spring is adjacent to the open end of the holder and is of relatively long axial length, said leaf spring being formed with a second inwardly extending projection adjacent to said opposite end of the leaf spring and of shorter axial length than said first-mentioned projection.

11. An accessory device for use with a toothbrush having a handle at one end and bristles at the opposite end, said device comprising:

a housing grippable by a user'"'"'s hand and having a longitudinal axis;

a holder mounted by a pivotal mounting within the housing and having a longitudinal axis parallel to the longitudinal axis of the housing, said holder having an open end for removably receiving a handle of a hand-held toothbrush with the bristles of the toothbrush projecting externally of the housing, said holder including a retainer member for releasably gripping the toothbrush handle when inserted through the open end of the holder; and

a drive carried by said housing and coupled to said holder for cyclically pivoting said holder and the toothbrush held thereby, said drive including an electric rotary motor within the housing, and an eccentric coupling which couples the rotary motor to the holder;

said housing including a partition wall extending longitudinally within the housing parallel to the longitudinal axis of the housing and dividing its interior into a battery compartment for receiving an electrical battery to power said motor, and a second compartment for said holder, electric motor and eccentric coupling,

wherein said pivotal mounting of the holder is in the form of a ring of elastomeric material between the open end of the holder and an inner surface of the housing, permitting the holder and the toothbrush held thereby to pivot about two orthogonal axes perpendicular to said longitudinal axis of the housing, while at the same time sealing the interior of the housing.

12. The device according to claim 11, wherein the end of the holder opposite to its open end is closed by an end wall, said eccentric coupling comprising a pin rotated eccentrically by said motor and received within a slot formed in said end wall of the holder.