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US3740854A Expired / Lapsed US ⏱️ 0.0 years remaining

Demonstration device for illustrating tooth structure and dental care

Assignee: DONNA BLACK
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Filing: 1972-06-19
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Granted: 1973-06-26
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Expires: 1992-06-19
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Abstract

Abstract A demonstration device employing a backing sheet with a base member secured thereon representing a jawbone. The base member has a socket which receives the lower or root portion of a tooth representing member. Elastic tie members connect the root portion of the tooth representing member to the base to illustrate a periodontal fiber connection. A tab member is pivotally attached to the upper portion of the tooth representing member and is movable between an exposed position adjacent to an edge of the tooth representing member and a hidden position. A pull string is attached to the tab for operating the tab between its two positions, and such pull string in moving the tab to its hidden position demonstrates the removal of plaque from a tooth by the use of dental floss. Auxiliary tooth representing members are provided on each side of the first mentioned tooth representing member, one of such auxiliary tooth representing members being pivotal so as to be moved out of the way during a demonstration. A pair of transparent panels representing gum portions are pivotally connected to the base and have an upper edge which demonstrates a gum margin associated with the tooth representing member. An auxiliary panel is employed having a toothbrush representation thereon and is adapted to be positioned in the gum margin to illustrate how such margin area can be cleaned with a toothbrush.

Inventors

  • 👤 Donna Black La

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 22:45
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/10

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 180 words
A demonstration device comprising a. a base member representing a jawbone portion, b. first means fixedly attached to said base member representing a tooth having an upper exposed portion and a lower root portion, c. second means movably supported relative to said first means and representing a foreign substance which may have gathered on a tooth, d. said second means being movable between two positions one of which comprises an exposed position projecting beyond said exposed portion of said first means and the other of which comprises a hidden position behind the exposed portion of said first means, e. and a pull string attached to said second means arranged to move the latter between its said two positions and arranged to represent dental floss, f. said pull string in moving said second means to said other position being movable adjacent to a portion of said first means in the area of exposal of said second means with said first means whereby to represent that upon engagement of a tooth with dental floss, foreign substance will be cleaned from a tooth.
Claim 2
Dependent Claim 180 words
A demonstration device comprising a. a base member representing a jawbone portion, b. first means fixedly attached to said base member representing a tooth having an upper exposed portion and a lower root portion, c. second means movably supported relative to said first means and representing a foreign substance which may have gathered on a tooth, d. said second means being movable between two positions one of which comprises an exposed position projecting beyond said exposed portion of said first means and the other of which comprises a hidden position behind the exposed portion of said first means, e. and a pull string attached to said second means arranged to move the latter between its said two positions and arranged to represent dental floss, f. said pull string in moving said second means to said other position being movable adjacent to a portion of said first means in the area of exposal of said second means with said first means whereby to represent that upon engagement of a tooth with dental floss, foreign substance will be cleaned from a tooth.
Claim 3
Dependent Claim 46 words
The demonstration device of claim 1 including third means movably supported adjacent to said first means and also representing a tooth, said third means being movable toward and away from said first means to allow visible movable operation of said second means between its two positions.
Claim 4
Dependent Claim 28 words
The demonstration device of claim 2 including fourth means supported adjacent to said first means on the side opposite from said third means and also representing a tooth.
Claim 5
Dependent Claim 100 words
The demonstration device of claim 1 including a. a flexible panel movable between a first position wherein an edge thereof is disposed at the bottom of the upper exposed portion of said first means to represent a gum margin and a second position wherein said edge of the panel is disposed away from said upper exposed portion, b. and toothbrush representing means movable relative to said first means and arranged to be moved between said first means and said flexible panel to be moved between said first means and said flexible panel to illustrate means for cleaning the gum margin.
Claim 6
Dependent Claim 53 words
The demonstration device of claim 4 including a. a second flexible panel also movable between a first position wherein an edge thereof is adjacent the upper exposed portion of said first means to represent a gum margin and a second position wherein its said edge is disposed away from said upper edge portion.
Claim 7
Dependent Claim 60 words
The demonstration device of claim 1 wherein a. said base member includes a recess representing a tooth socket and said lower root portion of said first means extends into said socket, b. and elastic means connected between said base member and said lower root portion of said first means representing periodontal fibers which connect a tooth to a jawbone socket.
Claim 8
Dependent Claim 25 words
The demonstration device of claim 1 including a roughened portion on said first means representing a foreign substance which may have gathered on a tooth.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-06-25 1976-12-25 1977-06-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-25 1980-12-25 1981-06-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-25 1984-12-25 1985-06-26 $7700.00 Window Closed / Lapsed

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