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US3925841A Expired / Lapsed US ⏱️ 0.0 years remaining

Rotary toothbrush

Assignee: Individual
•
Filing: 1974-03-04
•
Granted: 1975-12-16
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Expires: 1994-03-04
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Abstract

Abstract A plurality of linearly extending brushes are rotatably mounted at one end in a housing. Each brush operatively abuts a corresponding one of the inner surfaces of half the front teeth of a jaw and the corresponding side teeth, the outer surfaces of half the front teeth and the corresponding side teeth and the bite surfaces of half the front teeth and the corresponding side teeth. A motive device in the housing is coupled to the brushes for rotating the brushes about their axes in predetermined directions.

Inventors

  • 👤 Joseph L Caliendo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 15:42
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/16; A61C17/22; A61C17/32; A61C17/34; A61C17/349; A61C17/24; A61C17/26

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 634 words
A rotary toothbrush for brushing all the teeth of a jaw, said teeth being in a substantially U-shaped pattern with front teeth at the curvilinear portion of the pattern and side teeth at the substantially linear portions of the pattern and each tooth having an inner surface on the inside of the U-shaped pattern, an outer surface on the outside of the U-shaped pattern and a bite surface facing the bite surfaces of the teeth of the other jaw, said toothbrush comprising a housing; first, second, third, fourth, fifth and sixth substantially linearly extending brushes rotatably mounted at one end in the housing and positioned so that the first brush operatively abuts a corresponding one of the inner surfaces of substantially half the front teeth and the corresponding side teeth, the second brush operatively abuts the outer surfaces of substantially half the front teeth and the corresponding side teeth and the third brush operatively abuts the bite surfaces of substantially half the front teeth and the bite surfaces of the corresponding side teeth, the first brush comprising a substantially linear rod having a first plurality of substantially radially extending bristles in planes substantially perpendicular to the rod in the area of the side teeth, a second plurality of substantially radially extending bristles in planes inclined at angles opening away from the first plurality of bristles in the area of the inner surfaces of the front teeth and a third plurality of substantially radially extending bristles in planes inclined at angles openinG toward the first and second pluralities of bristles in the area of the outer surfaces of the front teeth, the bristles of each of the second and third pluralities of bristles substantially abutting each other in a plane substantially perpendicular to the rod and the bristles of each of the second and third pluralities of bristles increasing in length substantially in proportion with the distance from said plane, the bristles of each of the second and third pluralities of bristles forming substantially conical configurations, the second brush comprising a substantially linear rod having a first plurality of substantially radially extending bristles in planes substantially perpendicular to the rod in the area of the side teeth, the bristles of the first plurality of bristles having substantially equal lengths, and a second plurality of substantially radially extending bristles in planes substantially perpendicular to the rod, the bristles of the second plurality of bristles increasing in length substantially in proportion with the distance from the first plurality of bristles in a flared configuration, and the third brush comprising a substantially linear rod having a first plurality of substantially radially extending bristles in planes substantially perpendicular to the rod in the area of the side teeth, the bristles of the first plurality of bristles having substantially equal lengths, and a second plurality of substantially radially extending bristles in planes substantially perpendicular to the rod, the bristles of the second plurality of bristles increasing in length substantially in proportion with the distance from the first plurality of bristles in a flared configuration, the fourth of the brushes being identical to the first brush and abutting the inner surfaces of the other half of the front teeth of the jaw and the inner surfaces of the corresponding side teeth, the fifth of the brushes being identical to the second brush and abutting the outer surfaces of the other half of the front teeth and the outer surfaces of the corresponding side teeth and the sixth of the brushes being identical to the third brush and abutting the bite surfaces of the other half of the front teeth of the jaw and the bite surfaces of the corresponding side teeth; and motive means in the housing coupled to the brushes for rotating the brushes about their axes in predetermined directions.
Claim 2
Dependent Claim 634 words
A rotary toothbrush for brushing all the teeth of a jaw, said teeth being in a substantially U-shaped pattern with front teeth at the curvilinear portion of the pattern and side teeth at the substantially linear portions of the pattern and each tooth having an inner surface on the inside of the U-shaped pattern, an outer surface on the outside of the U-shaped pattern and a bite surface facing the bite surfaces of the teeth of the other jaw, said toothbrush comprising a housing; first, second, third, fourth, fifth and sixth substantially linearly extending brushes rotatably mounted at one end in the housing and positioned so that the first brush operatively abuts a corresponding one of the inner surfaces of substantially half the front teeth and the corresponding side teeth, the second brush operatively abuts the outer surfaces of substantially half the front teeth and the corresponding side teeth and the third brush operatively abuts the bite surfaces of substantially half the front teeth and the bite surfaces of the corresponding side teeth, the first brush comprising a substantially linear rod having a first plurality of substantially radially extending bristles in planes substantially perpendicular to the rod in the area of the side teeth, a second plurality of substantially radially extending bristles in planes inclined at angles opening away from the first plurality of bristles in the area of the inner surfaces of the front teeth and a third plurality of substantially radially extending bristles in planes inclined at angles openinG toward the first and second pluralities of bristles in the area of the outer surfaces of the front teeth, the bristles of each of the second and third pluralities of bristles substantially abutting each other in a plane substantially perpendicular to the rod and the bristles of each of the second and third pluralities of bristles increasing in length substantially in proportion with the distance from said plane, the bristles of each of the second and third pluralities of bristles forming substantially conical configurations, the second brush comprising a substantially linear rod having a first plurality of substantially radially extending bristles in planes substantially perpendicular to the rod in the area of the side teeth, the bristles of the first plurality of bristles having substantially equal lengths, and a second plurality of substantially radially extending bristles in planes substantially perpendicular to the rod, the bristles of the second plurality of bristles increasing in length substantially in proportion with the distance from the first plurality of bristles in a flared configuration, and the third brush comprising a substantially linear rod having a first plurality of substantially radially extending bristles in planes substantially perpendicular to the rod in the area of the side teeth, the bristles of the first plurality of bristles having substantially equal lengths, and a second plurality of substantially radially extending bristles in planes substantially perpendicular to the rod, the bristles of the second plurality of bristles increasing in length substantially in proportion with the distance from the first plurality of bristles in a flared configuration, the fourth of the brushes being identical to the first brush and abutting the inner surfaces of the other half of the front teeth of the jaw and the inner surfaces of the corresponding side teeth, the fifth of the brushes being identical to the second brush and abutting the outer surfaces of the other half of the front teeth and the outer surfaces of the corresponding side teeth and the sixth of the brushes being identical to the third brush and abutting the bite surfaces of the other half of the front teeth of the jaw and the bite surfaces of the corresponding side teeth; and motive means in the housing coupled to the brushes for rotating the brushes about their axes in predetermined directions.
Claim 3
Dependent Claim 40 words
A rotary toothbrush as claimed in claim 1, wherein the motive means comprises an electric motor, a source of electrical energy coupled to the motor for rotating the motor and gear means coupling the motor to each of the brushes.
Claim 4
Dependent Claim 29 words
A rotary toothbrush as claimed in claim 1, further comprising a music box coupled to the motive means for producing a tune simultaneously with the rotation of the brushes.
Claim 5
Dependent Claim 18 words
A rotary toothbrush as claimed in claim 1, wherein the motive means contrarotates the first and second brushes.

References Cited (Backward Citations)

US2917759A Cited
US1854626A Cited
US2628377A Cited
US2758326A Cited
US2947013A Cited
US3440680A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-12-15 1979-06-16 1979-12-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-12-15 1983-06-16 1983-12-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-12-15 1987-06-16 1987-12-16 $7700.00 Window Closed / Lapsed

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