US3629944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary implement
Assignee: Lord Corp
•
Filing: 1969-06-17
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Granted: 1971-12-28
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Expires: 1989-06-17
Abstract
Abstract A portable rotary cup toothbrush in which a contraangle is affixed to a hand-held motor and has the rotary power of the motor communicated therethrough to power a rotating cup or buffer for removing the bacterial plaque from the teeth of the user. An adapter is disclosed which will couple a standard dentist''s contraangle to a hand-held motor. Additionally, the coupling between the motor on one hand and the contraangle on the other hand is provided with a flywheel for the storage of rotational energy.
Inventors
- 👤 Edward A Avakoff
- 👤 Oliver G Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:57
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/005; A61C17/16; A61C17/22; A61C17/24; A61C17/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
203 words
A hand-held rotary dental appliance comprising: an elongated housing, a motor mounted within said housing having a rotatable shaft disposed in axial alignment with the longitudinal axis of said housing, a balanced, weighted flywheel nonrotatably mounted on said shaft, a first end of said flywheel formed with a flat surface disposed normal to the axis of said shaft and a pair of pins projecting outwardly therefrom normal to said surface, a coupling member mounted on the first end of said flywheel having a surface formed with a flat face having a diameter the same as the first end of said flywheel disposed in juxtaposition with the surface on the first end of said flywheel, a pair of grooves formed in said coupling member in registration with said pins to allow torque transfer of said pins to said coupling member while allowing said coupling member to be free to move longitudinally relative to said flywheel, an implement-engaging cup mounted rigidly on said coupling member in axial alignment with said motor shaft, a dental working instrument having a shaft longitudinally mounted relative to said housing and axially aligned with the shaft of said motor to frictionally engage with said cup member for transference of torque.
Claim 2
Dependent Claim
203 words
A hand-held rotary dental appliance comprising: an elongated housing, a motor mounted within said housing having a rotatable shaft disposed in axial alignment with the longitudinal axis of said housing, a balanced, weighted flywheel nonrotatably mounted on said shaft, a first end of said flywheel formed with a flat surface disposed normal to the axis of said shaft and a pair of pins projecting outwardly therefrom normal to said surface, a coupling member mounted on the first end of said flywheel having a surface formed with a flat face having a diameter the same as the first end of said flywheel disposed in juxtaposition with the surface on the first end of said flywheel, a pair of grooves formed in said coupling member in registration with said pins to allow torque transfer of said pins to said coupling member while allowing said coupling member to be free to move longitudinally relative to said flywheel, an implement-engaging cup mounted rigidly on said coupling member in axial alignment with said motor shaft, a dental working instrument having a shaft longitudinally mounted relative to said housing and axially aligned with the shaft of said motor to frictionally engage with said cup member for transference of torque.
Claim 3
Dependent Claim
23 words
A hand-held rotary dental appliance according to claim 1 and wherein power means are mounted within said housing connected to energize said motor.
Claim 4
Dependent Claim
57 words
A hand held rotary dental appliance according to claim 1 and wherein said housing is formed in two parts, the first of said parts including the motor and said flywheel and the second of said parts including said coupling member and said dental working instrument, each of said parts being removably mounted with respect to each other.
References Cited (Backward Citations)
US2128524A
Cited
US2278095A
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US2677885A
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FR1196725A
Cited
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Cited
US3509629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |