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US3641671A Expired / Lapsed US ⏱️ 0.0 years remaining

Endosseous ramus implant and denture support frame

Assignee: Individual
•
Filing: 1970-09-10
•
Granted: 1972-02-15
•
Expires: 1990-09-10
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Abstract

Abstract A permanent frame for removably supporting an artificial denture for the entire lower jaw. The frame comprises a rigid bar sized and shaped to correspond to the mandible and the denture. The bar terminates at each end in a ramus implant and has an integral intraosseous blade at the central portion providing a holding implant in the front of the mandible. The bar is spaced above the epithelium between the ramus implants and the mandible implant. The denture is firmly but removably set down over the bar with the foundation material for the denture barely contacting the epithelium.

Inventors

  • 👤 Harold D Roberts

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 07:34
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0027

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 189 words
A lower jaw denture assembly comprising a rigid bar forming a permanent support frame and an artificial denture removably mounted thereon, said bar sized and shaped to correspond to the mandible, each end of said bar formed into an implant and driven rearwardly into the corresponding ramus portion of the jawbone in between the lingual and buccal cortical plates of the ramus at a desired distance above the alvealor nerve, each of said end implants having a flat body portion with a plurality of holes extending laterally therethrough, each of said implants having a width of approximately 2 mm., a depth not exceeding 6 mm., and an overall length of at least 30 mm., each of said end implants also having an upwardly curved bottom edge with the bottom and top edges of the implant converging at the end tip facilitating the driving of the implant into the ramus, said artificial denture of the assembly comprising a foundation of suitable denture material with the artificial teeth held therein, said foundation extending over said bar down to the epithelium on the mandible and firmly but removably held by said bar.
Claim 2
Dependent Claim 189 words
A lower jaw denture assembly comprising a rigid bar forming a permanent support frame and an artificial denture removably mounted thereon, said bar sized and shaped to correspond to the mandible, each end of said bar formed into an implant and driven rearwardly into the corresponding ramus portion of the jawbone in between the lingual and buccal cortical plates of the ramus at a desired distance above the alvealor nerve, each of said end implants having a flat body portion with a plurality of holes extending laterally therethrough, each of said implants having a width of approximately 2 mm., a depth not exceeding 6 mm., and an overall length of at least 30 mm., each of said end implants also having an upwardly curved bottom edge with the bottom and top edges of the implant converging at the end tip facilitating the driving of the implant into the ramus, said artificial denture of the assembly comprising a foundation of suitable denture material with the artificial teeth held therein, said foundation extending over said bar down to the epithelium on the mandible and firmly but removably held by said bar.
Claim 3
Dependent Claim 56 words
The denture assembly of claim 1 with the bottom edge of said bar spaced a fraction of an inch above the epithelium on the major portion of the mandible and with the addition of an integral intraosseous blade on the forward central portion of said bar constituting an implant in the front portion of the mandible.

References Cited (Backward Citations)

US1140538A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-02-14 1975-08-16 1976-02-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-02-14 1979-08-16 1980-02-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-02-14 1983-08-16 1984-02-15 $7700.00 Window Closed / Lapsed

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