US3505995A - Mouthguard with compressible chamber in outer flange - Google Patents
Mouthguard with compressible chamber in outer flange Download PDFInfo
- Publication number
- US3505995A US3505995A US662128A US3505995DA US3505995A US 3505995 A US3505995 A US 3505995A US 662128 A US662128 A US 662128A US 3505995D A US3505995D A US 3505995DA US 3505995 A US3505995 A US 3505995A
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- United States
- Prior art keywords
- outer flange
- chamber
- teeth
- mouthguard
- guard
- Prior art date
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/08—Body-protectors for players or sportsmen, i.e. body-protecting accessories affording protection of body parts against blows or collisions
- A63B71/085—Mouth or teeth protectors
Definitions
- This invention relates to a mouthguard to protect the teeth, mouth and lips of athletic contestants.
- mouthguards were solid members worn over the teeth, and although made of tough resilient plastics, nevertheless a blow to the mouth or jaw of the wearer would be directly transmitted to the teeth and lips.
- the primary object of this invention is to provide a chamber in the outer flange of such guards in the labial and buccal areas so that the flange is rendered compressible to thus absorb and soften the impact of such blows before it is transmitted to the teeth and lips.
- Another object of the invention is to provide a guard of the character described which contains a compressible outer flange and is fabricated either as a standard unfitted substantially U-shaped member of channel crosssection or as such a unit capable .of being custom fitted to the particular set of teeth of the wearer.
- Another object of the invention is to provide a mouthguard with a compressible outer flange containing a chamber continuously or intermittently extending from distal end to distal end of the guard and disposed at the la bial and buccal areas, which chamber may contain air or a resilient foam material.
- Yet another object of the invention is to provide an eificient method of making both fitted and unfitted mouthguards with compressible outer flanges.
- FIG. 1 is a perspective view of a molded horseshoe shaped channel member in the initial stage of making on fitted guards of the instant invention
- FIG. 2 is an enlarged sectional view taken on the line 2-2 of FIG. 1;
- FIG. 3 is a perspective view of a foam filler employed in one form of the present invention.
- FIG. 4 is a view similar to FIG. 2 showing the filler of FIG. 3 in place in the member of FIG. 1;
- FIG. 5 is a view similar to FIG. 4 showing the upper edge of the outer flange sealed off to provide a chamber with the foam material therein;
- FIG. 6 is a perspective view of the complete unfitted guard of FIG. 5;
- FIG. 7 is a view similar to FIG. 1 of a modified member in the initial stage of making the fitted guard of the instant invention
- FIG. 8 is a view similar to FIG. 7 showing the sealing of the upper edge of the outer flange to provide the chamber therein;
- FIG. 9 is an enlarged sectional view taken on the line 99 of FIG. 8.
- the fitted guard of the instant invention shown in FIGS. 7-9 may be made of a tough resilient thermoplastic resin which can be softened to take teeth impressions in the mouth and to be cooled to fix these impressions, of the type disclosed in Patent No. 3,250,272 or of the high molecular weight binary ethylene-vinyla-cetate copolymers disclosed in my copending application Ser. No. 531,123 filed Mar. 2, 1966 and commercially available from Du Pont under the trademark Alathon.
- the unfitted guard of FIGS. 1-6 that is one which will shield the teeth as a standard unit and will not contain teeth impressions, can be made of the same thermoplastic resins but of thinner gauge or of other resilient plastic materials known in the art such as polyvinyl chloride, polyurethane, etc.
- a precursor member 10 in the form of a substantially U- or horseshoe-shaped unit of channel cross-section is formed of a suitable plastic by casting or preferably injection molding techniques.
- This the member will contain a shorter inner or lingual flange 12, an outer two-part flange 14 and a web 16 connecting the lingual and outer flanges at their lower edges.
- the outer flange 12 will be formed to contain an inner portiOn 18, an outer portion 20 and a cavity 22 therebetween corresponding to the male member and opening through the upper edge of the outer flange 14 as at 24.
- the opening 24 is then sealed peripherally as at 26 as are the distal ends 28 and 30 to thereby provide one form of guard in which the cavity 22 becomes a sealed chamber 31 which extends substantially from one distal end 28 to the other 30 and thus covers the labial area 32 and the buccal areas 34. If the chamber should partially collapse'during the sealing of the upper edge, one distal end can be sealed to provide a pinhole for the insertion of a needle through which air can be pumped to inflate the chamber.
- Such a guard when placed over the upper and/or lower teeth will have an air chamber 31 around the labial and buccal areas of the outer flange rendering the latter compressible so that the impact of blows thereto will be softened before being transmitted to the teeth.
- the chamber 31 may be partially filled with a liquid.
- a compressibly resilient filler strip of material 36 such as polyurethane foam, rubber or equivalent materials, may be inserted into the cavity 22 through the upper opening 24.
- the length of the strip 36 is that of the overall length of the cavity 22. Its height, how- 7 ever, is shorter so that when inserted in the cavity there will be peripheral free space 38 above the strip up to the open upper edge 24 allowing the latter to be sealed to enclose the filler strip 36 without adversely efiecting the filler strip itself.
- This form of the invention with cornpressibly resilient filler strip 36 has the advantage of providing compressibility and minimizing possible breaks through the inner and outer portions 18 and 20 of the outer flange 14.
- the precursor member 40 is similar to member 10 in that it is horseshoe-shaped and contains an inner or lingual flange 42, a web 44, and a two-part outer flange having an outer portion 46 and an inner portion 48 separated by a cavity 50 which is open through the upper edge of the outer flange as at 52.
- the inner flange portion 48 is thicker than the outer flange surface 46. If one wishes to take im- 3 pressions 56 of the bite surfaces of the opposite teeth as well, as described in Patent No. 3,250,272, then the web 44 should also be comparatively thick.
- the precursor member is completed by sealing the open upper end 52 of the cavity 50 as at 58.
- the pre-cursor unit 40 is molded to contain spaced bars 60 in the cavity 50 connecting the inner and outer flange portions 46 and 48, the upper edges 62 of the spacer bars terminating below the upper open edge 52 of the cavity so that the peripheral seal 58 can be effected without interference from the bars 60.
- the guard When sealed, the guard will be seen to contain chambers 64 between the spacer bars 60 and a continuous chamber 66 above the spacer bars from one sealed distal end 68 to the other 70, thus providing compressible chambers in the outer flange at the labial and buccal areas 72 and 74.
- the unit is softened, applied to the teeth and cooled to fix the teeth impressions therein in the manner set forth in Patent No. 3,250,272 so that the final guard ready for use will contain the aforementioned features plus the teeth indentations 54 on the inside thereof and/or the outer bite indentations 56.
- the chambers 64 and 66 can contain air, can be partially filled with liquid or can contain strips of compressibly resilient, i.e. foam, material.
- While preferred embodiments of the invention have rendering said outer flange compressible in response to an impact thereto.
- said mouth guard is made of a material capable of being softened sufliciently to take tooth impressions in the mouth and of fixing them upon cooling to form a fitted guard.
- a method of making a mouthguard comprised of forming resilient material into a substantially U-shaped member of channel cross-section with a lingual flange, an outer flange and a web joining them, the outer flange including inner and outer portions spaced by a cavity open along and through the upper edge of the outer flange opposite the web and at its distal ends, and sealing the opening along the upper edge of the outer flange and its distal ends to close off the cavity and form a compressible chamber.
- a precursor unit for a mouthguard with a compressible impact-absorbing chamber comprising a substantially U-shaped resilient member of channel crosssection made of a material capable of being softened sufficient to take tooth impressions in the mouth and of fixing them upon cooling to form a fitted guard, said member including an outer flange, a lingual flange and a web joining them, said outer flange including a chamber extending from one distal end to the other thereof and opening through the upper edge of said outer flange.
Description
April 14, 1970 5, GREENBERG 3,505,995
MOUTHGUARD WITH COMPRESSIBLE CHAMBER IN OUTER FLANGE Filed Aug. 21, 1967 2 Sheets-Sheet 1 \NVENTOR 5AM u EL GREEN BERG hw p K M ATTORNEY s. GREENBERG 3,505,995
MOUTHGUARD WITH COMPRES'SIBLE CHAMBER IN OUTER FLANGE April 14, 1970 2 Sheets-Sheet 2 Filed Aug. 21, 1967 \NVENTOR SAMUEL GREENBERG w ,6 W
ATTORNEY United States Patent 3,505,995 MOUTHGUARD WITH COMPRESSIBLE CHAMBER IN OUTER FLANGE Samuel Greenberg, Philadelphia, Pa. (Stump Road and Commerce Drive, Montgomeryville, Pa. 18936) Filed Aug. 21, 1967, Ser. No. 662,128 Int. Cl. A61f /56 US. Cl. 128-136 Claims ABSTRACT OF THE DISCLOSURE A mouthguard in the form of a substantially U-shaped member of channel cross-section adapted to receive and shield the upper or lower set of teeth with a chamber in the outer flange to render the same compressible so that an impact thereto will be softened before it is transmitted to the teeth and lips.
This invention relates to a mouthguard to protect the teeth, mouth and lips of athletic contestants. Heretofore, mouthguards were solid members worn over the teeth, and although made of tough resilient plastics, nevertheless a blow to the mouth or jaw of the wearer would be directly transmitted to the teeth and lips.
The primary object of this invention is to provide a chamber in the outer flange of such guards in the labial and buccal areas so that the flange is rendered compressible to thus absorb and soften the impact of such blows before it is transmitted to the teeth and lips.
Another object of the invention is to provide a guard of the character described which contains a compressible outer flange and is fabricated either as a standard unfitted substantially U-shaped member of channel crosssection or as such a unit capable .of being custom fitted to the particular set of teeth of the wearer.
Another object of the invention is to provide a mouthguard with a compressible outer flange containing a chamber continuously or intermittently extending from distal end to distal end of the guard and disposed at the la bial and buccal areas, which chamber may contain air or a resilient foam material.
Yet another object of the invention is to provide an eificient method of making both fitted and unfitted mouthguards with compressible outer flanges.
These and other objects of the invention will become more apparent as the following description proceeds in conjunction with the accompanying drawings, wherein:
FIG. 1 is a perspective view of a molded horseshoe shaped channel member in the initial stage of making on fitted guards of the instant invention;
FIG. 2 is an enlarged sectional view taken on the line 2-2 of FIG. 1;
FIG. 3 is a perspective view of a foam filler employed in one form of the present invention;
FIG. 4 is a view similar to FIG. 2 showing the filler of FIG. 3 in place in the member of FIG. 1;
FIG. 5 is a view similar to FIG. 4 showing the upper edge of the outer flange sealed off to provide a chamber with the foam material therein;
FIG. 6 is a perspective view of the complete unfitted guard of FIG. 5;
FIG. 7 is a view similar to FIG. 1 of a modified member in the initial stage of making the fitted guard of the instant invention;
FIG. 8 is a view similar to FIG. 7 showing the sealing of the upper edge of the outer flange to provide the chamber therein; and
FIG. 9 is an enlarged sectional view taken on the line 99 of FIG. 8.
Specific reference is now made to the drawings wherein 3,505,995 Patented Apr. 14, 1970 similar reference characters are used for corresponding elements throughout.
The fitted guard of the instant invention shown in FIGS. 7-9 may be made of a tough resilient thermoplastic resin which can be softened to take teeth impressions in the mouth and to be cooled to fix these impressions, of the type disclosed in Patent No. 3,250,272 or of the high molecular weight binary ethylene-vinyla-cetate copolymers disclosed in my copending application Ser. No. 531,123 filed Mar. 2, 1966 and commercially available from Du Pont under the trademark Alathon. The unfitted guard of FIGS. 1-6, that is one which will shield the teeth as a standard unit and will not contain teeth impressions, can be made of the same thermoplastic resins but of thinner gauge or of other resilient plastic materials known in the art such as polyvinyl chloride, polyurethane, etc.
Coming now to FIGS. 1-6, a precursor member 10 in the form of a substantially U- or horseshoe-shaped unit of channel cross-section is formed of a suitable plastic by casting or preferably injection molding techniques. This the member will contain a shorter inner or lingual flange 12, an outer two-part flange 14 and a web 16 connecting the lingual and outer flanges at their lower edges. Using a suitable male member during injection molding, the outer flange 12 will be formed to contain an inner portiOn 18, an outer portion 20 and a cavity 22 therebetween corresponding to the male member and opening through the upper edge of the outer flange 14 as at 24.
The opening 24 is then sealed peripherally as at 26 as are the distal ends 28 and 30 to thereby provide one form of guard in which the cavity 22 becomes a sealed chamber 31 which extends substantially from one distal end 28 to the other 30 and thus covers the labial area 32 and the buccal areas 34. If the chamber should partially collapse'during the sealing of the upper edge, one distal end can be sealed to provide a pinhole for the insertion of a needle through which air can be pumped to inflate the chamber. Such a guard when placed over the upper and/or lower teeth will have an air chamber 31 around the labial and buccal areas of the outer flange rendering the latter compressible so that the impact of blows thereto will be softened before being transmitted to the teeth. If desired the chamber 31 may be partially filled with a liquid.
Prior to sealing the opening 24 peripherally as at 26, a compressibly resilient filler strip of material 36, such as polyurethane foam, rubber or equivalent materials, may be inserted into the cavity 22 through the upper opening 24. Desirably, the length of the strip 36 is that of the overall length of the cavity 22. Its height, how- 7 ever, is shorter so that when inserted in the cavity there will be peripheral free space 38 above the strip up to the open upper edge 24 allowing the latter to be sealed to enclose the filler strip 36 without adversely efiecting the filler strip itself. This form of the invention with cornpressibly resilient filler strip 36 has the advantage of providing compressibility and minimizing possible breaks through the inner and outer portions 18 and 20 of the outer flange 14.
In the fitted form of the guard, as shown in FIGS. 79, the precursor member 40 is similar to member 10 in that it is horseshoe-shaped and contains an inner or lingual flange 42, a web 44, and a two-part outer flange having an outer portion 46 and an inner portion 48 separated by a cavity 50 which is open through the upper edge of the outer flange as at 52. However, since the guard will be softened and inserted over the teeth to take teeth and gum impressions 54 in the inner surface thereof, the inner flange portion 48 is thicker than the outer flange surface 46. If one wishes to take im- 3 pressions 56 of the bite surfaces of the opposite teeth as well, as described in Patent No. 3,250,272, then the web 44 should also be comparatively thick.
As in the form of the invention shown in FIGS. 1-6 and described above, the precursor member is completed by sealing the open upper end 52 of the cavity 50 as at 58. Before doing so however, to prevent collapse of the thinner outer flange portion 46 during heat sealing, the pre-cursor unit 40 is molded to contain spaced bars 60 in the cavity 50 connecting the inner and outer flange portions 46 and 48, the upper edges 62 of the spacer bars terminating below the upper open edge 52 of the cavity so that the peripheral seal 58 can be effected without interference from the bars 60. When sealed, the guard will be seen to contain chambers 64 between the spacer bars 60 and a continuous chamber 66 above the spacer bars from one sealed distal end 68 to the other 70, thus providing compressible chambers in the outer flange at the labial and buccal areas 72 and 74. The unit is softened, applied to the teeth and cooled to fix the teeth impressions therein in the manner set forth in Patent No. 3,250,272 so that the final guard ready for use will contain the aforementioned features plus the teeth indentations 54 on the inside thereof and/or the outer bite indentations 56. The chambers 64 and 66 can contain air, can be partially filled with liquid or can contain strips of compressibly resilient, i.e. foam, material.
While preferred embodiments of the invention have rendering said outer flange compressible in response to an impact thereto.
2. The combination of claim 1 wherein said chamber includes a compressibly resilient filler.
3. The combination of claim 1 wherein said mouth guard is made of a material capable of being softened sufliciently to take tooth impressions in the mouth and of fixing them upon cooling to form a fitted guard.
4. The combination of claim 3 wherein said chamber separates said outer flange into outer and inner portions, the latter portion being thicker than the former to permit formation of tooth impressions while retaining the struc- 4 tural integrity of the guard and compressible chamber therein.
5. The combination of claim 4 and spaced bars in said chamber connecting said outer and inner portions of said outer flange.
6. A method of making a mouthguard comprised of forming resilient material into a substantially U-shaped member of channel cross-section with a lingual flange, an outer flange and a web joining them, the outer flange including inner and outer portions spaced by a cavity open along and through the upper edge of the outer flange opposite the web and at its distal ends, and sealing the opening along the upper edge of the outer flange and its distal ends to close off the cavity and form a compressible chamber.
7. The method of claim 6 and the step of inserting a compressibly resilient filler in the open cavity below" the upper edge of the outer flange before sealing it.
8. The method of claim 6 and the step of forming the member so that the inner portion of the outer flange is thicker than its outer portion so that the mouthguard will be capable of taking inner teeth impressions without impairing the structural integrity of the outer flange and the compressible chamber therein.
9. The method of claim 8 and the step of providing spaced bars in the open cavity connecting the inner and outer portions of the outer flange which extend below the upper edge thereof before sealing it to prevent collapse of the outer thinner portion of the outer flange during the sealing operation.
10. A precursor unit for a mouthguard with a compressible impact-absorbing chamber comprising a substantially U-shaped resilient member of channel crosssection made of a material capable of being softened sufficient to take tooth impressions in the mouth and of fixing them upon cooling to form a fitted guard, said member including an outer flange, a lingual flange and a web joining them, said outer flange including a chamber extending from one distal end to the other thereof and opening through the upper edge of said outer flange.
References Cited UNITED STATES PATENTS 1,934,688 11/1933 Ackerman 325 2,702,032 2/1955 Fredland 128136 3,223,085 12/1965 Gores et a1 128136 3,250,272 5/1966 Greenberg 128-136 ADELE M. EAGER, Primary Examiner U.S. Cl. X.R. 32-19
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US66212867A | 1967-08-21 | 1967-08-21 |
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US3505995A true US3505995A (en) | 1970-04-14 |
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Application Number | Title | Priority Date | Filing Date |
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US662128A Expired - Lifetime US3505995A (en) | 1967-08-21 | 1967-08-21 | Mouthguard with compressible chamber in outer flange |
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US11273360B2 (en) | 2016-09-30 | 2022-03-15 | Shock Doctor, Inc. | Mouthguard including a protection portion having heating and softening features |
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