US3943924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mouthpiece
Assignee: DENTAL RESOURCES Inc 2160 WAYZATA BLVD ORONO MN 55356
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Filing: 1974-09-30
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Granted: 1976-03-16
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Expires: 1994-09-30
Abstract
Abstract An athletic mouthpiece of a composite construction is provided which has a relatively flexible, shock absorbing material in which is permanently imbedded a relatively rigid insert located to provide a backing for the upper front teeth. The insert, which in use is situated adjacent the lingual surfaces of the upper front teeth and at least a portion of the palate, aids in delocalizing the forces which penetrate the more flexible material, thereby preventing the concentration of forces in a small area which could result in oral injury.
Inventors
- 👤 Steven B. Kallestad
- 👤 Robert H. May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:43
CPC Classifications
A; A63; A63B; A63B71/00; A63B71/08; A63B71/085
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
116 words
A protective mouthpiece comprising: a. an elongated shell of flexible, shock absorbing polymeric material having an essentially U-shaped cross section defined by inner and outer upstanding portions and a connecting portion, the shell being arcuately formed over its length to fit over a row of teeth, said outer and inner upstanding portions and said connecting portion adapted to respectively overlie the outer, inner and biting surfaces of a user's teeth; b. and an insert plate member of rigid, force transmitting material disposed in the inner upstanding portion only and completely embedded in a central position of the arcuate length thereof to lie adjacent said inner tooth surfaces when the mouthpiece is placed in the user's mouth.
Claim 2
Dependent Claim
116 words
A protective mouthpiece comprising: a. an elongated shell of flexible, shock absorbing polymeric material having an essentially U-shaped cross section defined by inner and outer upstanding portions and a connecting portion, the shell being arcuately formed over its length to fit over a row of teeth, said outer and inner upstanding portions and said connecting portion adapted to respectively overlie the outer, inner and biting surfaces of a user's teeth; b. and an insert plate member of rigid, force transmitting material disposed in the inner upstanding portion only and completely embedded in a central position of the arcuate length thereof to lie adjacent said inner tooth surfaces when the mouthpiece is placed in the user's mouth.
Claim 3
Dependent Claim
15 words
The mouthpiece defined by claim 1, wherein the insert plate is generally semicircular in shape.
Claim 4
Dependent Claim
25 words
The mouthpiece defined by claim 1, wherein the length of the insert plate is substantially less than the arcuate length of said inner upstanding portion.
Claim 5
Dependent Claim
43 words
The mouthpiece defined by claim 1, wherein: a. said arcuate shell comprises a laminate formed from first and second thin sheets of said polymeric material; b. and said insert plate member is disposed between said first and second thin sheets of polymeric material.
Claim 6
Dependent Claim
30 words
The mouthpiece defined by claim 1, wherein said polymeric material and said rigid, force transmitting material become conformably flexible at elevated temperatures to permit molding thereof into a desired shape.
Claim 7
Dependent Claim
28 words
The mouthpiece defined by claim 5, wherein the arcuate shell comprises a copolymer of ethylene and vinyl acetate, and the insert plate member comprises a polyvinyl chloride resin.
Claim 8
Dependent Claim
37 words
The mouthpiece defined by claim 1, which further comprises a palatal portion projecting upwardly and away from the outer upstanding portion for overlying at least a part of the user's hard palate with the mouthpiece in place.
Claim 9
Dependent Claim
154 words
A protective mouthpiece comprising: a. an elongated laminate shell formed from first and second thin sheets of flexible, shock absorbing polymeric material, the shell having an essentially U-shaped cross section defined by inner and outer upstanding portions and a connecting portion, the shell being arcuately formed over its length to fit over a row of teeth, said outer and inner upstanding portions and said connecting portion adapted to respectively overlie the outer, inner and biting surfaces of a user's teeth; b. an insert plate member of rigid, force transmitting material disposed in a central position of the arcuate length of the inner upstanding portion between said first and second thin sheets of polymeric material to lie adjacent said inner tooth surfaces when the mouthpiece is placed in the user's mouth; c. said polymeric material and said rigid, force transmitting material being conformably flexible at elevated temperatures to permit molding thereof into a desired shape.
Claim 10
Dependent Claim
154 words
A protective mouthpiece comprising: a. an elongated laminate shell formed from first and second thin sheets of flexible, shock absorbing polymeric material, the shell having an essentially U-shaped cross section defined by inner and outer upstanding portions and a connecting portion, the shell being arcuately formed over its length to fit over a row of teeth, said outer and inner upstanding portions and said connecting portion adapted to respectively overlie the outer, inner and biting surfaces of a user's teeth; b. an insert plate member of rigid, force transmitting material disposed in a central position of the arcuate length of the inner upstanding portion between said first and second thin sheets of polymeric material to lie adjacent said inner tooth surfaces when the mouthpiece is placed in the user's mouth; c. said polymeric material and said rigid, force transmitting material being conformably flexible at elevated temperatures to permit molding thereof into a desired shape.
Claim 11
Dependent Claim
15 words
The mouthpiece defined by claim 8, wherein the insert plate is generally semicircular in shape.
Claim 12
Dependent Claim
25 words
The mouthpiece defined by claim 8, wherein the length of the insert plate is substantially less than the arcuate length of said inner upstanding portion.
Claim 13
Dependent Claim
28 words
The mouthpiece defined by claim 8, wherein the arcuate shell comprises a copolymer of ethylene and vinyl acetate and the insert plate member comprises a polyvinyl chloride resin.
Claim 14
Dependent Claim
37 words
The mouthpiece defined by claim 8, which further comprises a palatal portion projecting upwardly and away from the outer upstanding portion for overlying at least a part of the user's hard palate with the mouthpiece in place.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |