US2834109A - Anti-fogging device for dental mirrors - Google Patents

Anti-fogging device for dental mirrors Download PDF

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Publication number
US2834109A
US2834109A US644538A US64453857A US2834109A US 2834109 A US2834109 A US 2834109A US 644538 A US644538 A US 644538A US 64453857 A US64453857 A US 64453857A US 2834109 A US2834109 A US 2834109A
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frame
shank
dental
skirt
mirror
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Expired - Lifetime
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US644538A
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Allan W O'hara
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SHIRLEY O HARA
SHIRLEY O'HARA
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SHIRLEY O HARA
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
    • A61B1/247—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors
    • A61B1/253—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors with means for preventing fogging

Definitions

  • This invention relates to dental mirrors.
  • the invention contemplates the provision, in a dental mirror of conventional form, of an air distributing shield extending about at least a substantial portion of the periphery of the reflecting surface of the mirror, and means for admitting a blast of air beneath a central portion of the shield whereby the shield distributes said air substantially uniformly over the entire area of said reflecting surface.
  • FIG. 1 is a perspective view of a dental mirror in accordance with the invention
  • Figure 2 is a side elevation, partly in section, of the dental mirror
  • Figure 3 is a partial side elevation, partly in section, of a dental mirror attachment
  • Figure 4 is a perspective view of the attachment shown in Figure 3.
  • a dental mirror having a circular frame 1 supporting a member 2 with reflecting surface 2a.
  • the frame 1 is carried by an angularly extending shank 3 on which is mounted a handle 4, all in conventional manner.
  • the shank 3 is connected to the frame 1 by means of an underlying arm 5 to expose the end of the shank and the outlet 6 of an axial bore 7 formed in the shank and extending from end to end thereof.
  • the handle 4 is also provided with an axial bore 8 extending from end to end thereof and constituting a continuation of bore 7 in the shank.
  • the free end of the handle terminates in a nipple 9 to which may be attached to a flexible tube 10 or the like for supply of a stream of air to the bores 8 and 7.
  • an air distributing skirt or shield 11 Fixed to the lower end of the shank is an air distributing skirt or shield 11 which has a neck portion 12 extending around the lower end of the shank whereby the air outlet 6 discharges thereinto.
  • the shield also has side walls 13 diverging outwardly from the neck and extending partially around and in substantial engagement with the periphery of the circular frame 1. The side walls 13 terminate at points which lie approximately diametrically opposite each other with respect to the mirror surface 20,
  • the walls 13 embrace a substantial portion (approximately one-third to one-half) of the periphery of the frame 51.
  • the side walls 13 extend a short distance above the mirror surface 2a and are joined by a top wall 114 which .is thus disposed in spaced relation to the mirror surface.
  • the top wall '14 is recessed rearwardly from the ends of side walls 13 and terminates in an inwardly curved lip 15 to expose substantiallythe entire reflecting surface 2a.
  • lip 15 is downwardly flared towards the surface 2a in order to direct the flow of air thereon.
  • the skirt 11 also has a bottom wall 16 which is jointed to the lower edges of side walls 13 and which terminates in substantial abutment with the periphery of reflecting surface 2a.
  • air under pressure is admitted through the tube 10 and flows through the bores 8 and 7 and into the distributing skirt 11. It will be apparent that the skirt 11, by reason of its particular structure and association with the reflecting surface 20, as described, will distribute the air stream substantially uniformly over the entire extent of surface 2a.
  • the air stream is preferably under just suflicient pressure to maintain the surface 2a clean and free of moisture condensation.
  • the dental mirror shown is of conventional form with circular frame 17 carrying a reflecting member with reflecting surface 18, shank 19, and handle 20.
  • the attachment in accordance with the invention comprises a tubular stem 21 having a neck 22 at one end thereof merging into an air distributing skirt 23.
  • the skirt 23 is quite similar to skirt 11 and has side walls 24, top wall 25, and bottom wall 26.
  • Means for mounting the attachment on the dental mirror comprises a clip 27 having a U-shaped intermediate portion 28 fixed to stem 21 and adapted to embrace the shank 19, and a pair of flared end portions 129 adapted to extend under the frame 17 and each having a jaw 30 arranged to grip the frame 17 at spaced points.
  • the stem 21 is slightly inclined upwardly with respect to the neck 22 whereby it is somewhat spaced from the shank 19 and handle 20 when clipped to the mirror. This permits convenient attachment of a flexible tube 31 to the free end of the stem for admission of air under pressure thereto. It will be clear that, in operation, the device shown in Figures 3 and 4 will function in the same manner as that illustrated in Figures 1 and 2.
  • said device comprising an air distributing skirt having side walls engageable with and arranged to extend around a substantial portion of the periphery of said frame, a bottom wall having a free edge substantially engageable with a portion of the periphery of said reflecting member, a top wall arranged for disposition above said frame and reflecting surface, and a restricted neck, and means for supplying an air stream to said neck and the interior of said skirt.
  • An anti-fogging device for a dental mirror having a frame, a member having a reflecting surface supported attached to the shank, said device comprising an air distributing skirt having side walls engaging and extending around a substantial portion of the periphery of said frame, a bottom Wall having a free edge in substantial engagement with a peripheral portion of said reflecting member, a top wall joining said side walls and disposed in spaced relation above said frame and reflecting surface, and a restricted neck fixed to the end of said shank, said shank and handle having an axial bore extending therethrough and communicating with the interior of said skirt through said neck, and means for attaching a flexible air supply tube to the end of said handle.
  • An anti-fogging attachment for a dental mirror having a frame, a member having a reflecting surface sup ported by the frame, a shank carrying said frame, and a handle attached to the shank
  • said attachment comprising and air distributing skirt having side walls engageable with and arranged to extend around a substantial portion 2,834,109 g a H of the periphery of said frame, a bottom wall having a free edge substantially engageable with a peripheral portion of said reflecting member, a top wall arranged for disposition above said frame and reflecting surface, a restricted neck, and a tubular stem forming a continuation of said neck, and means, for securing said attachment to said mirror.
  • said last-mentioned means comprising a clip having a U- shaped intermediate portion fixed to said stem and engageable with said shank, and a pair of flared end portions arranged to extend under said frame and each having a jaw for gripping engagement with said frame.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Dentistry (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

May 13 1958 A. w. OHARA ANTI-FOGGING DEVICE FOR DENTAL MIRRORS Filed March 7, 1957 I A fomez/ ANTI-FOGGlNG DEVICE FOR DENTAL Allan W. Hara, ;Kingst on, Ontario, Canada, assignor to Shirley 'OHara, Kingston, Ontario, Canada Application March 7, 1957, Serial No. 644,538
Claims. craze-=69).
This invention relates to dental mirrors.
The problem of maintaining the reflecting surface of a dental mirror clear and free from fogging or moisture condensation when in use has long been recognized. Various means have heretofore been proposed for solving this problem but despite all such prior proposals, the conventional dental mirror, even though subject to much fogging when in use, it still employed by the vast majority of dentists. Although the problem has become accentuated in recent years due to the advent of high speed drill-- ing with water or vapor spray cooling, no satisfactory solution has heretofore been proposed.
It is an object of this invention to provide an antifogging device for dental mirrors which may be readily incorporated within or mounted upon the structure of conventional dental mirrors.
To this end, the invention contemplates the provision, in a dental mirror of conventional form, of an air distributing shield extending about at least a substantial portion of the periphery of the reflecting surface of the mirror, and means for admitting a blast of air beneath a central portion of the shield whereby the shield distributes said air substantially uniformly over the entire area of said reflecting surface.
The invention will be described with reference to the accompanying drawing, in which Figure 1 is a perspective view of a dental mirror in accordance with the invention,
Figure 2 is a side elevation, partly in section, of the dental mirror,
Figure 3 is a partial side elevation, partly in section, of a dental mirror attachment, and
Figure 4 is a perspective view of the attachment shown in Figure 3.
eferring to Figures 1 and 2 of the drawing, a dental mirror is shown having a circular frame 1 supporting a member 2 with reflecting surface 2a. The frame 1 is carried by an angularly extending shank 3 on which is mounted a handle 4, all in conventional manner.
As shown, the shank 3 is connected to the frame 1 by means of an underlying arm 5 to expose the end of the shank and the outlet 6 of an axial bore 7 formed in the shank and extending from end to end thereof. The handle 4 is also provided with an axial bore 8 extending from end to end thereof and constituting a continuation of bore 7 in the shank. Preferably, the free end of the handle terminates in a nipple 9 to which may be attached to a flexible tube 10 or the like for supply of a stream of air to the bores 8 and 7.
Fixed to the lower end of the shank is an air distributing skirt or shield 11 which has a neck portion 12 extending around the lower end of the shank whereby the air outlet 6 discharges thereinto. The shield also has side walls 13 diverging outwardly from the neck and extending partially around and in substantial engagement with the periphery of the circular frame 1. The side walls 13 terminate at points which lie approximately diametrically opposite each other with respect to the mirror surface 20, Thus,
- Patented May 13-, 1,958
the walls 13 embrace a substantial portion (approximately one-third to one-half) of the periphery of the frame 51. The side walls 13 extend a short distance above the mirror surface 2a and are joined by a top wall 114 which .is thus disposed in spaced relation to the mirror surface. The top wall '14 is recessed rearwardly from the ends of side walls 13 and terminates in an inwardly curved lip 15 to expose substantiallythe entire reflecting surface 2a.
Preferably, lip 15 is downwardly flared towards the surface 2a in order to direct the flow of air thereon.
The skirt 11 also has a bottom wall 16 which is jointed to the lower edges of side walls 13 and which terminates in substantial abutment with the periphery of reflecting surface 2a. i
. The neck 12, as shown,- merges gradually into the walls 13,14 and 16. r
In use, air under pressure is admitted through the tube 10 and flows through the bores 8 and 7 and into the distributing skirt 11. It will be apparent that the skirt 11, by reason of its particular structure and association with the reflecting surface 20, as described, will distribute the air stream substantially uniformly over the entire extent of surface 2a. The air stream is preferably under just suflicient pressure to maintain the surface 2a clean and free of moisture condensation.
Referring-to Figures 3 and 4, the dental mirror shown is of conventional form with circular frame 17 carrying a reflecting member with reflecting surface 18, shank 19, and handle 20. The attachment in accordance with the invention comprises a tubular stem 21 having a neck 22 at one end thereof merging into an air distributing skirt 23. The skirt 23 is quite similar to skirt 11 and has side walls 24, top wall 25, and bottom wall 26.
Means for mounting the attachment on the dental mirror comprises a clip 27 having a U-shaped intermediate portion 28 fixed to stem 21 and adapted to embrace the shank 19, and a pair of flared end portions 129 adapted to extend under the frame 17 and each having a jaw 30 arranged to grip the frame 17 at spaced points.
It will be observed that, when the attachment is clipped in place on the mirror, the skirt 23 will be disposed about the reflecflng surface 18 in substantially the same manner as in the embodiment illustrated in Figures 1 and 2.
The stem 21 is slightly inclined upwardly with respect to the neck 22 whereby it is somewhat spaced from the shank 19 and handle 20 when clipped to the mirror. This permits convenient attachment of a flexible tube 31 to the free end of the stem for admission of air under pressure thereto. It will be clear that, in operation, the device shown in Figures 3 and 4 will function in the same manner as that illustrated in Figures 1 and 2.
I claim:
the frame, a shank carrying said frame, and a handle attached to said shank, said device comprising an air distributing skirt having side walls engageable with and arranged to extend around a substantial portion of the periphery of said frame, a bottom wall having a free edge substantially engageable with a portion of the periphery of said reflecting member, a top wall arranged for disposition above said frame and reflecting surface, and a restricted neck, and means for supplying an air stream to said neck and the interior of said skirt.
2. An anti-fogging device for a dental mirror as defined in claim 1, wherein said side walls extend around at least one third of the periphery of said frame, and wherein said top wall is recessed to expose substantially the entire area of said reflecting surface.
3. An anti-fogging device for a dental mirror having a frame, a member having a reflecting surface supported attached to the shank, said device comprising an air distributing skirt having side walls engaging and extending around a substantial portion of the periphery of said frame, a bottom Wall having a free edge in substantial engagement with a peripheral portion of said reflecting member, a top wall joining said side walls and disposed in spaced relation above said frame and reflecting surface, anda restricted neck fixed to the end of said shank, said shank and handle having an axial bore extending therethrough and communicating with the interior of said skirt through said neck, and means for attaching a flexible air supply tube to the end of said handle.
4. An anti-fogging attachment for a dental mirror having a frame, a member having a reflecting surface sup ported by the frame, a shank carrying said frame, and a handle attached to the shank said attachment comprising and air distributing skirt having side walls engageable with and arranged to extend around a substantial portion 2,834,109 g a H of the periphery of said frame, a bottom wall having a free edge substantially engageable with a peripheral portion of said reflecting member, a top wall arranged for disposition above said frame and reflecting surface, a restricted neck, and a tubular stem forming a continuation of said neck, and means, for securing said attachment to said mirror.
5. An anti-fogging attachment as defined in claim 4, said last-mentioned means comprising a clip having a U- shaped intermediate portion fixed to said stem and engageable with said shank, and a pair of flared end portions arranged to extend under said frame and each having a jaw for gripping engagement with said frame.
References Cited in the file of this patent UNITED STATES PATENTS
US644538A 1957-03-07 1957-03-07 Anti-fogging device for dental mirrors Expired - Lifetime US2834109A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027644A (en) * 1959-02-20 1962-04-03 Vincent J Piscitelli Dental instrument
US3032879A (en) * 1958-07-09 1962-05-08 Lafitte George Arthur Dental mirror
US3052031A (en) * 1960-03-31 1962-09-04 Vincent J Piscitelli Mirror-type dental instrument with vacuum means for keeping a dry surface
US3082762A (en) * 1960-05-09 1963-03-26 Gnehm Johann Speculum, particularly for stomatological purposes
US3826005A (en) * 1973-03-23 1974-07-30 R Spinello Dental mirror apparatus for holding expendable demisting sleeves
US3969824A (en) * 1974-12-18 1976-07-20 Randy Miles Widen Self cleaning dental mirror
US4279594A (en) * 1979-10-18 1981-07-21 Reflek Products, Incorporated Dental hand mirror
BE1010753A6 (en) 1996-11-19 1999-01-05 Dings Myriam Rene Theresia Mouth mirror and attachment to such mouth mirror to achieve.
US5951284A (en) * 1998-03-10 1999-09-14 Lake; James A. Intraoral instrument
US20150374220A1 (en) * 2013-03-12 2015-12-31 Maarten Antoon Nicolaas DEN HARTOG Method for cleaning a mirror with handle for medical or dental examination during use by means of a compressed air flow and for this method customized mirror with handle
US20230146194A1 (en) * 2021-11-08 2023-05-11 Acme Tooling Technology Co., Ltd. Dental mirror structure capable of spraying air

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1925981A (en) * 1931-09-10 1933-09-05 Thomas D Hopkins Dental implement
US2436040A (en) * 1947-02-21 1948-02-17 Friedman Henry Saliva ejector and reflector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1925981A (en) * 1931-09-10 1933-09-05 Thomas D Hopkins Dental implement
US2436040A (en) * 1947-02-21 1948-02-17 Friedman Henry Saliva ejector and reflector

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032879A (en) * 1958-07-09 1962-05-08 Lafitte George Arthur Dental mirror
US3027644A (en) * 1959-02-20 1962-04-03 Vincent J Piscitelli Dental instrument
US3052031A (en) * 1960-03-31 1962-09-04 Vincent J Piscitelli Mirror-type dental instrument with vacuum means for keeping a dry surface
US3082762A (en) * 1960-05-09 1963-03-26 Gnehm Johann Speculum, particularly for stomatological purposes
US3826005A (en) * 1973-03-23 1974-07-30 R Spinello Dental mirror apparatus for holding expendable demisting sleeves
US3969824A (en) * 1974-12-18 1976-07-20 Randy Miles Widen Self cleaning dental mirror
US4279594A (en) * 1979-10-18 1981-07-21 Reflek Products, Incorporated Dental hand mirror
BE1010753A6 (en) 1996-11-19 1999-01-05 Dings Myriam Rene Theresia Mouth mirror and attachment to such mouth mirror to achieve.
US5951284A (en) * 1998-03-10 1999-09-14 Lake; James A. Intraoral instrument
US20150374220A1 (en) * 2013-03-12 2015-12-31 Maarten Antoon Nicolaas DEN HARTOG Method for cleaning a mirror with handle for medical or dental examination during use by means of a compressed air flow and for this method customized mirror with handle
US20230146194A1 (en) * 2021-11-08 2023-05-11 Acme Tooling Technology Co., Ltd. Dental mirror structure capable of spraying air

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