US2774970A - Face shield - Google Patents
Face shield Download PDFInfo
- Publication number
- US2774970A US2774970A US476331A US47633154A US2774970A US 2774970 A US2774970 A US 2774970A US 476331 A US476331 A US 476331A US 47633154 A US47633154 A US 47633154A US 2774970 A US2774970 A US 2774970A
- Authority
- US
- United States
- Prior art keywords
- lugs
- sheet
- frame
- face shield
- end portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/02—Goggles
- A61F9/025—Special attachment of screens, e.g. hinged, removable; Roll-up protective layers
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1161—Means for fastening to the user's head
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1184—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with protection for the eyes, e.g. using shield or visor
Definitions
- the present invention relates to new and useful improvements in face shields for various purposes and has for its primary object to provide, in a device of this character of the type comprising a supporting frame and a protective sheet, novel means for removably securing said sheet in position on said frame.
- Figure 1 is a perspective view of a face shield constructed in accordance with the present invention
- Figure 2 is a view in horizontal section, taken substantially on the line 22 of Figure 1;
- Figure 3 is an enlarged fragmentary horizontal sectional view through an end portion of the device.
- Figure 4 is a view in horizontal section showing a slight modification.
- reference character 5 designates generally an open frame of plastic or other suitable material.
- the frame 5 includes an arcuate bar 6 comprising a downwardly or reversely bowed intermediate portion 7 having formed integrally therewith depending nose pieces 8.
- Temples 9 are pivotally mounted on the rear of the end portions of the bar 6, as at 10.
- lugs 11 Formed integrally with the end portions of the bar 6 and projecting forwardly therefrom are lugs 11. As illustrated to advantage in Figure 3 of the drawing, the lugs 11 include inwardly and forwardly curved tongues or fingers 12.
- a protective sheet or panel which is designated generally by the reference character 13.
- the sheet 13 is of substantially the shape shown and said sheet, which comprises distinctively and attractively colored marginal portions 14, is of a suitable transparent, resilient material, preferably a plastic.
- the sheet 13 is provided in its upper portion with transversely spaced openings for the reception of the lugs 11 for removably mounting said sheet on the frame 5. Further, the sheet 13 is engageable under tension beneath the tongues 12 for retention thereby on the lugs 11.
- the openings 15 in the normally flat sheet 13 are spaced a greater distance apart than the distance between the lugs 11.
- said sheet is buckled or bowed forwardly on its vertical or longitudinal axis and sprung under the retaining tongues 12 onto the lugs 11.
- the bowed or buckled resilient sheet 13 is tensioned or maintained in engagement with the tongues 12 by its tendency to expand or resume its normally flat condition.
- the marginal portions of the sheet 13 around the openings 15 are also distinctively and attractively colored to more sharply define said openings and facilitate engaging the lugs 11 therein.
- lugs 16 of separate material are mounted on the end portions of the bar 6 and extend therethrough.
- the lugs 15 comprise integral fingers or tongues 17, similar to the tongues 12, which retain the resilient sheet 13 in position on said lugs.
- the temples 9 are pivotally mounted on the rear end portions of the lugs 16, as at 13.
- this form of the invention is substantially similar in construction to the embodiment of Figures 1, 2, and 3 of the drawing.
- a shield of the character described comprising; a frame for mounting on the nose of a wearer, lugs on the end portions of said frame, and a resilient sheet having spaced openings therein for the reception of the lugs for mounting said sheet on the frame, the openings in the sheet being spaced a greater distance apart than the lugs for bowing and tensioning said sheet for frictionally securing the same on said lugs.
- a shield of the character described comprising; a frame for mounting on the nose of a wearer, lugs for bowing and tensioning said sheet when it is engaged with said lugs on the end portions of said frame, a resilient sheet having spaced openings therein for the reception of the lugs for mounting said sheet on the frame, and inwardly directed tongues on the lugs engageable with the sheet for retaining said sheet on said lugs, the openings in the sheet being spaced a greater distance apart than the lugs.
- a face shield of the character described comprising; a frame comprising a bar for mounting on the nose of a wearer, temples pivotally mounted on the end portions of said bar, integral lugs projecting forwardly from said end portions of said bar, a resilient, transparent protective sheet removably mounted on the frame, said sheet having spaced openings therein for the reception of the lugs, and inwardly projecting tongues on the lugs for anchoring the sheet thereon, said sheet being normally flat and transversely bowed when mounted on the frame, the openings in said sheet being spaced at greater distance apart than the lugs.
- a face shield of the character comprising; a frame for mounting on the nose of a wearer, said frame including a bar, lugs extending through the end portions of said bar, temples pivotally mounted on the rear end portions of said lugs, a resilient, transparent protective sheet removably mounted on the bar, said sheet having spaced openings therein for the reception of the forward end portions of the lugs, and inwardly projecting tongues on said forward end portions of said lugs engageable with the sheet for anchoring same on said lugs, the openings in the sheet being spaced a greater distance apart than the lugs for permitting said sheet to be bowed and engaged under tension with said lugs.
Description
Dec. 25, 1956 R. DU BOIS FACE SHIELD Filed Dec. 20, 1954 RUdO/f 0030/5 INVENTOR.
- 9 BY MW FM United States Patent 2,774,970 FACE SHIELD Rudolf Du Bois, Alliance, N. J. Application December 20, 1954, Serial No. 476,331 4 Claims. (Cl. 2-9) The present invention relates to new and useful improvements in face shields for various purposes and has for its primary object to provide, in a device of this character of the type comprising a supporting frame and a protective sheet, novel means for removably securing said sheet in position on said frame.
Other objects of the invention are to provide a face shield of the aforementioned character which will be comparatively simple in construction, durable, compact, of light weight, attractive in appearance and which may be manufactured at low cost.
All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawing, wherein like characters of reference designate corresponding parts throughout the several views, and wherein:
Figure 1 is a perspective view of a face shield constructed in accordance with the present invention;
Figure 2 is a view in horizontal section, taken substantially on the line 22 of Figure 1;
Figure 3 is an enlarged fragmentary horizontal sectional view through an end portion of the device; and
Figure 4 is a view in horizontal section showing a slight modification.
Referring now to the drawing in detail, it will be seen that reference character 5 designates generally an open frame of plastic or other suitable material. The frame 5 includes an arcuate bar 6 comprising a downwardly or reversely bowed intermediate portion 7 having formed integrally therewith depending nose pieces 8. Temples 9 are pivotally mounted on the rear of the end portions of the bar 6, as at 10.
Formed integrally with the end portions of the bar 6 and projecting forwardly therefrom are lugs 11. As illustrated to advantage in Figure 3 of the drawing, the lugs 11 include inwardly and forwardly curved tongues or fingers 12.
Removably mounted on the frame 5 is a protective sheet or panel which is designated generally by the reference character 13. The sheet 13 is of substantially the shape shown and said sheet, which comprises distinctively and attractively colored marginal portions 14, is of a suitable transparent, resilient material, preferably a plastic. The sheet 13 is provided in its upper portion with transversely spaced openings for the reception of the lugs 11 for removably mounting said sheet on the frame 5. Further, the sheet 13 is engageable under tension beneath the tongues 12 for retention thereby on the lugs 11.
It is thought that the manner in which the shield is assembled and used will be readily apparent from a consideration of the foregoing. Briefly, the openings 15 in the normally flat sheet 13 are spaced a greater distance apart than the distance between the lugs 11. To mount the sheet 13 on the frame 5, said sheet is buckled or bowed forwardly on its vertical or longitudinal axis and sprung under the retaining tongues 12 onto the lugs 11. In this manner the bowed or buckled resilient sheet 13 is tensioned or maintained in engagement with the tongues 12 by its tendency to expand or resume its normally flat condition. The marginal portions of the sheet 13 around the openings 15 are also distinctively and attractively colored to more sharply define said openings and facilitate engaging the lugs 11 therein.
"ice
In the modification of Figure 4 of the drawing, lugs 16 of separate material are mounted on the end portions of the bar 6 and extend therethrough. The lugs 15 comprise integral fingers or tongues 17, similar to the tongues 12, which retain the resilient sheet 13 in position on said lugs. Then, the temples 9 are pivotally mounted on the rear end portions of the lugs 16, as at 13. In other respects, this form of the invention is substantially similar in construction to the embodiment of Figures 1, 2, and 3 of the drawing.
It is believed that the many advantages of a face shield constructed in accordance with the present invention will be readily understood, and although preferred embodiments of the device are as illustrated and described, it is to be understood that changes in the details of construction may be resorted to which will fall within the scope of the invention as claimed.
What is claimed as new is as follows:
1. A shield of the character described comprising; a frame for mounting on the nose of a wearer, lugs on the end portions of said frame, and a resilient sheet having spaced openings therein for the reception of the lugs for mounting said sheet on the frame, the openings in the sheet being spaced a greater distance apart than the lugs for bowing and tensioning said sheet for frictionally securing the same on said lugs.
2. A shield of the character described comprising; a frame for mounting on the nose of a wearer, lugs for bowing and tensioning said sheet when it is engaged with said lugs on the end portions of said frame, a resilient sheet having spaced openings therein for the reception of the lugs for mounting said sheet on the frame, and inwardly directed tongues on the lugs engageable with the sheet for retaining said sheet on said lugs, the openings in the sheet being spaced a greater distance apart than the lugs.
3. A face shield of the character described comprising; a frame comprising a bar for mounting on the nose of a wearer, temples pivotally mounted on the end portions of said bar, integral lugs projecting forwardly from said end portions of said bar, a resilient, transparent protective sheet removably mounted on the frame, said sheet having spaced openings therein for the reception of the lugs, and inwardly projecting tongues on the lugs for anchoring the sheet thereon, said sheet being normally flat and transversely bowed when mounted on the frame, the openings in said sheet being spaced at greater distance apart than the lugs.
4. A face shield of the character comprising; a frame for mounting on the nose of a wearer, said frame including a bar, lugs extending through the end portions of said bar, temples pivotally mounted on the rear end portions of said lugs, a resilient, transparent protective sheet removably mounted on the bar, said sheet having spaced openings therein for the reception of the forward end portions of the lugs, and inwardly projecting tongues on said forward end portions of said lugs engageable with the sheet for anchoring same on said lugs, the openings in the sheet being spaced a greater distance apart than the lugs for permitting said sheet to be bowed and engaged under tension with said lugs.
References Cited in the file of this patent UNITED STATES PATENTS 1,876,412 Hannan et al. Sept. 6, 1932 2,342,982 Stern et al. Feb. 29, 1944 2,669,717 Diggs Feb. 23, 1954 FOREIGN PATENTS 688,227 Germany Jan. 25, 1940 1,024,440 France Apr. 1, 1953
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US476331A US2774970A (en) | 1954-12-20 | 1954-12-20 | Face shield |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US476331A US2774970A (en) | 1954-12-20 | 1954-12-20 | Face shield |
Publications (1)
Publication Number | Publication Date |
---|---|
US2774970A true US2774970A (en) | 1956-12-25 |
Family
ID=23891415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US476331A Expired - Lifetime US2774970A (en) | 1954-12-20 | 1954-12-20 | Face shield |
Country Status (1)
Country | Link |
---|---|
US (1) | US2774970A (en) |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3312217A (en) * | 1965-02-23 | 1967-04-04 | William S Mckinstry | Anti-snoring device |
US3991753A (en) * | 1975-01-15 | 1976-11-16 | Viesca Y Viesca Gabriel | Device for preventing an individual from inhaling germs, foreign bodies, or the like |
US4122848A (en) * | 1977-04-28 | 1978-10-31 | Carpel Emmett F | Surgical drape support |
EP0242988A2 (en) * | 1986-03-21 | 1987-10-28 | Timothy J. Landis | Visor-type mask, especially for dentists |
JPS63290563A (en) * | 1987-04-03 | 1988-11-28 | エム・ピー・エー・メカニカ プラステイカ アゴルデイナ エス・ピー・エー | Protective visor for dentist |
US4864653A (en) * | 1988-05-16 | 1989-09-12 | Landis Timothy J | Protective shield and visor supporting same |
US4884296A (en) * | 1988-11-23 | 1989-12-05 | Delta Medical Systems, Inc. | Protective face shield |
US4924526A (en) * | 1987-05-08 | 1990-05-15 | M.P.A. Meccanica Plastica Agordina S.P.A. | Protective visor |
EP0374215A1 (en) * | 1988-04-22 | 1990-06-27 | Bfd, Inc. | Face protector |
US4944039A (en) * | 1989-05-26 | 1990-07-31 | Ursula Dietrich | Protective mask |
US5297298A (en) * | 1992-12-29 | 1994-03-29 | Salatka Robert G | Eye shield |
US5619749A (en) * | 1995-09-07 | 1997-04-15 | Banuchi; Isabel M. | Antiphotoaging face mask |
WO1997024937A1 (en) * | 1996-01-11 | 1997-07-17 | Lisa Pospisil | Sun mask |
US5694925A (en) * | 1994-07-20 | 1997-12-09 | Tecnol Medical Products, Inc. | Face mask with enhanced seal and method |
US5699792A (en) * | 1994-07-20 | 1997-12-23 | Tecnol Medical Products, Inc. | Face mask with enhanced facial seal |
US5704349A (en) * | 1987-10-02 | 1998-01-06 | Tecnol Medical Products, Inc. | Surgical face mask with darkened glare-reducing strip and visor |
US6298492B1 (en) * | 2000-09-07 | 2001-10-09 | William H. Stirling | Net headgear with face stabilizer |
EP1245208A2 (en) * | 2001-03-26 | 2002-10-02 | Robert G. Salatka | Face shield and face shield support assembly |
US20050028238A1 (en) * | 2003-08-06 | 2005-02-10 | Tobin Joan Mullen | Sun mask towel |
US20050055751A1 (en) * | 2003-09-12 | 2005-03-17 | Dubois Gene | Protective eyewear for healthcare providers |
US20070113322A1 (en) * | 2005-11-21 | 2007-05-24 | Tom Tredup | Face shield |
WO2012033394A1 (en) * | 2010-09-07 | 2012-03-15 | Hilda Karina Bonilla Manjarrez | Unilens face protector |
USD732242S1 (en) | 2014-02-21 | 2015-06-16 | Tidi Products, Llc | Disposable face shield |
US9532617B2 (en) | 2014-02-21 | 2017-01-03 | Tidi Products, Llc | Disposable face shield |
USD907300S1 (en) * | 2020-04-07 | 2021-01-05 | II Daniel Patrick Brown | Brim mounted face shield |
USD907299S1 (en) * | 2020-04-07 | 2021-01-05 | II Daniel Patrick Brown | Brim mounted face shield |
USD930254S1 (en) * | 2020-06-02 | 2021-09-07 | Collabospace Inc. | Face shield |
US20210401084A1 (en) * | 2020-06-26 | 2021-12-30 | Mark Lamoncha | Protective face mask for attachment to protective eye-ware |
USD949486S1 (en) * | 2021-04-01 | 2022-04-19 | Xiaowei Zhong | Safety face shield |
US11311069B2 (en) * | 2020-04-01 | 2022-04-26 | DNA Gadgets LLC | Face shield and its assembly method |
USD952952S1 (en) * | 2020-05-29 | 2022-05-24 | Amatech Group Limited | Face shield for use with eyewear frames |
US11503865B2 (en) * | 2020-10-06 | 2022-11-22 | Jeffrey Thomas Meyer | Particle guard system and apparatus |
US11766080B2 (en) | 2020-06-26 | 2023-09-26 | Mark Lamoncha | Face shield for attachment to goggles or eyeglasses |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1876412A (en) * | 1932-09-06 | Glare shield | ||
DE688227C (en) * | 1938-09-25 | 1940-02-15 | Dr Med Rudolf Otto | Made of translucent and fireproof film, e.g. B. from cellulose hydrate film, made face mask |
US2342982A (en) * | 1942-12-28 | 1944-02-29 | Nathan R Stern | Face and eye shield |
FR1024440A (en) * | 1950-09-09 | 1953-04-01 | Face shield, in particular for cyclists or motorcyclists | |
US2669717A (en) * | 1951-11-08 | 1954-02-23 | Diggs Everett | Combined sunglasses and face protector |
-
1954
- 1954-12-20 US US476331A patent/US2774970A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1876412A (en) * | 1932-09-06 | Glare shield | ||
DE688227C (en) * | 1938-09-25 | 1940-02-15 | Dr Med Rudolf Otto | Made of translucent and fireproof film, e.g. B. from cellulose hydrate film, made face mask |
US2342982A (en) * | 1942-12-28 | 1944-02-29 | Nathan R Stern | Face and eye shield |
FR1024440A (en) * | 1950-09-09 | 1953-04-01 | Face shield, in particular for cyclists or motorcyclists | |
US2669717A (en) * | 1951-11-08 | 1954-02-23 | Diggs Everett | Combined sunglasses and face protector |
Cited By (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3312217A (en) * | 1965-02-23 | 1967-04-04 | William S Mckinstry | Anti-snoring device |
US3991753A (en) * | 1975-01-15 | 1976-11-16 | Viesca Y Viesca Gabriel | Device for preventing an individual from inhaling germs, foreign bodies, or the like |
US4122848A (en) * | 1977-04-28 | 1978-10-31 | Carpel Emmett F | Surgical drape support |
EP0242988A2 (en) * | 1986-03-21 | 1987-10-28 | Timothy J. Landis | Visor-type mask, especially for dentists |
EP0242988A3 (en) * | 1986-03-21 | 1988-06-01 | Timothy J. Landis | Visor-type mask, especially for dentists |
JPS63290563A (en) * | 1987-04-03 | 1988-11-28 | エム・ピー・エー・メカニカ プラステイカ アゴルデイナ エス・ピー・エー | Protective visor for dentist |
US4924526A (en) * | 1987-05-08 | 1990-05-15 | M.P.A. Meccanica Plastica Agordina S.P.A. | Protective visor |
US5704349A (en) * | 1987-10-02 | 1998-01-06 | Tecnol Medical Products, Inc. | Surgical face mask with darkened glare-reducing strip and visor |
EP0374215A1 (en) * | 1988-04-22 | 1990-06-27 | Bfd, Inc. | Face protector |
EP0374215A4 (en) * | 1988-04-22 | 1990-10-24 | John Patrick Russell | Face protector |
US4864653A (en) * | 1988-05-16 | 1989-09-12 | Landis Timothy J | Protective shield and visor supporting same |
US4884296A (en) * | 1988-11-23 | 1989-12-05 | Delta Medical Systems, Inc. | Protective face shield |
US4944039A (en) * | 1989-05-26 | 1990-07-31 | Ursula Dietrich | Protective mask |
US5297298A (en) * | 1992-12-29 | 1994-03-29 | Salatka Robert G | Eye shield |
US5694925A (en) * | 1994-07-20 | 1997-12-09 | Tecnol Medical Products, Inc. | Face mask with enhanced seal and method |
US5699792A (en) * | 1994-07-20 | 1997-12-23 | Tecnol Medical Products, Inc. | Face mask with enhanced facial seal |
US5619749A (en) * | 1995-09-07 | 1997-04-15 | Banuchi; Isabel M. | Antiphotoaging face mask |
WO1997024937A1 (en) * | 1996-01-11 | 1997-07-17 | Lisa Pospisil | Sun mask |
US5682606A (en) * | 1996-01-11 | 1997-11-04 | Pospisil; Lisa | Sun mask |
US6298492B1 (en) * | 2000-09-07 | 2001-10-09 | William H. Stirling | Net headgear with face stabilizer |
EP1245208A2 (en) * | 2001-03-26 | 2002-10-02 | Robert G. Salatka | Face shield and face shield support assembly |
EP1245208A3 (en) * | 2001-03-26 | 2002-10-09 | Robert G. Salatka | Face shield and face shield support assembly |
US6564804B2 (en) | 2001-03-26 | 2003-05-20 | Robert G. Salatka | Face shield and face shield support assembly |
US20050028238A1 (en) * | 2003-08-06 | 2005-02-10 | Tobin Joan Mullen | Sun mask towel |
US7051371B2 (en) | 2003-08-06 | 2006-05-30 | Joan M. Tobin | Sun mask towel |
US20050055751A1 (en) * | 2003-09-12 | 2005-03-17 | Dubois Gene | Protective eyewear for healthcare providers |
US6990981B2 (en) | 2003-09-12 | 2006-01-31 | Embrace Healthcare | Protective eyewear for healthcare providers |
US20070113322A1 (en) * | 2005-11-21 | 2007-05-24 | Tom Tredup | Face shield |
WO2012033394A1 (en) * | 2010-09-07 | 2012-03-15 | Hilda Karina Bonilla Manjarrez | Unilens face protector |
USD732242S1 (en) | 2014-02-21 | 2015-06-16 | Tidi Products, Llc | Disposable face shield |
US9532617B2 (en) | 2014-02-21 | 2017-01-03 | Tidi Products, Llc | Disposable face shield |
US11311069B2 (en) * | 2020-04-01 | 2022-04-26 | DNA Gadgets LLC | Face shield and its assembly method |
USD907299S1 (en) * | 2020-04-07 | 2021-01-05 | II Daniel Patrick Brown | Brim mounted face shield |
USD907300S1 (en) * | 2020-04-07 | 2021-01-05 | II Daniel Patrick Brown | Brim mounted face shield |
USD952952S1 (en) * | 2020-05-29 | 2022-05-24 | Amatech Group Limited | Face shield for use with eyewear frames |
USD930254S1 (en) * | 2020-06-02 | 2021-09-07 | Collabospace Inc. | Face shield |
USD971509S1 (en) | 2020-06-02 | 2022-11-29 | Collabospace Inc. | Face shield |
US20210401084A1 (en) * | 2020-06-26 | 2021-12-30 | Mark Lamoncha | Protective face mask for attachment to protective eye-ware |
US11766080B2 (en) | 2020-06-26 | 2023-09-26 | Mark Lamoncha | Face shield for attachment to goggles or eyeglasses |
US11503865B2 (en) * | 2020-10-06 | 2022-11-22 | Jeffrey Thomas Meyer | Particle guard system and apparatus |
USD949486S1 (en) * | 2021-04-01 | 2022-04-19 | Xiaowei Zhong | Safety face shield |
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