Patent US2240856A successfully refreshed from Google Patents.
US4259071A
Expired / Lapsed
US
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Dental polishing cup for use with a rotary dental hand piece
Assignee: Individual
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Filing: 1979-07-30
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Granted: 1981-03-31
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Expires: 1999-07-30
Abstract
Abstract A dental polishing cup for use with a rotary dental hand piece. The cup has a truncated conical shaped body member with a similar truncated conical shaped cavity in the large open end thereof, the opposite smaller end of the cup being attachable to the rotary hand piece. The inside wall of the cavity is provided with spiral ridges or grooves, the direction of the spiral being such that when the cup containing polishing compound is pressed against the teeth and rotated, the spirals will tend to force the compound inwardly toward the center of the cup.
Inventors
- 👤 Fuller Warden
- 👤 Eugene W. Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:21
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/005; A61C3/00; A61C3/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
A polishing cup for cleaning and polishing teeth for use with a rotary hand piece and a dental cleaning polishing compound, the cup comprising; a substantially truncated conical shaped body member of flexible elastic material, attachment means provided at a first small end thereof, a substantially truncated conical shaped cavity within the second large end of the cup for containing cleaning and polishing compound therein, and at least one spiral guide means around the peripheral wall of the cavity, each spiral guide means extending from within the cavity outwardly around the wall of the cavity in the direction of intended rotation of the cup for coacting with the teeth to force the polishing compound inwardly toward the center of and upwardly within the cavity within the cup.
Claim 2
Dependent Claim
127 words
A polishing cup for cleaning and polishing teeth for use with a rotary hand piece and a dental cleaning polishing compound, the cup comprising; a substantially truncated conical shaped body member of flexible elastic material, attachment means provided at a first small end thereof, a substantially truncated conical shaped cavity within the second large end of the cup for containing cleaning and polishing compound therein, and at least one spiral guide means around the peripheral wall of the cavity, each spiral guide means extending from within the cavity outwardly around the wall of the cavity in the direction of intended rotation of the cup for coacting with the teeth to force the polishing compound inwardly toward the center of and upwardly within the cavity within the cup.
Claim 3
Dependent Claim
22 words
A polishing cup as set forth in claim 1 wherein the spiral guide means comprises at least one inwardly extending spiral ridge.
Claim 4
Dependent Claim
25 words
A polishing cup as set forth in claim 1 wherein the cavity has an included angle greater than the included angle of the body member.
Claim 5
Dependent Claim
23 words
A polishing cup as set forth in claim 2 wherein there is a plurality of inwardly extending spiral ridges which are mutually parallel.
Claim 6
Dependent Claim
33 words
A polishing cup as set forth in claim 1 and including a central longitudinal bore through the cup from the first end of the body member into open communication with the cavity therein.
Claim 7
Dependent Claim
20 words
A polishing cup as set forth in claim 1 wherein the spiral guide means comprises at least one spiral groove.
Claim 8
Dependent Claim
21 words
A polishing cup as set forth in claim 5 wherein there is a plurality of spiral grooves which are mutually parallel.
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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |