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
  • A61F9/04—Eye-masks ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
  • A61F9/06—Masks, shields or hoods for welders

Definitions

• the invention relates to a protective device, particularly a welding shield, comprising a portion of an opaque material to be supported on the head and intended to protect the wearer from radiation and sparks, said portion being provided with a trans ⁇ parent section in the area of the eyes of the wearer; the protective device further comprising a protective glass positioned in the area of the eyes of the wearer and arranged to be turned upwards.
• the most usual structure comprises a shield portion of wood, metal, plastic, etc. which is positioned on the head of the worker in such a way that it protects the face of the worker.
• the shield portion is further provided with an opening in the area of the eyes of the wearer, and the opening is provided with a protective glass through which the workpiece can be viewed during welding.
• the opening made in the area of the eyes of the wearer is provided with a transparent plate which closes the opening but through which the wearer is able to see.
• the trans- parent plate may be made e.g. of transparent plastic.
• the protective glass is fitted in place in such a way that it can be turned into a position in which it covers the opening and correspondingly turned aside so that the wearer of the protective device sees around him through the opening.
• the protective glass is made of a material such that the workpiece can be viewed through it during welding.
• a drawback of the previously known protective devices has been that the ability of the wearer to see around him has been restricted and difficult to achieve. This is because the wearer does not see around him or not even the welding workpiece if the protective glass is in the position covering the transparent portion of the shield and the welding is not in progress.
• the wearer that is, the welder has to turn either the protective glass or the entire protective device away from the eyes always when he starts to weld or interrupts welding before he is able to see the welding workpiece and, for instance, to position the welding rod appropriately.
• the protective glass or the entire shield has to be again turned into the posi ⁇ tion protecting the face and the eyes. This is in ⁇ convenient and requires the use of at least one hand.
• the field of vision is further restricted by the fact that the cap has to be such that the radiation caused by the welding does not in any way reach the eyes of the welder.
• the field of vision of the welder is very restricted when the protective glass is in front of the eyes. In practice, the weld ⁇ er thereby sees only the welding workpiece.
• the object of the invention is to provide a protective device by means of which the drawbacks of the prior art can be eliminated.
• a protective device according to the invention which is characterized in that a trans ⁇ parent viewing section known per se is formed below the transparent section, the viewing section being in a manner known per se at an angle with respect to the transparent section provided with the protective glass so that the wearer is able to view the work- piece through the viewing section substantially down ⁇ wards even when the protective glass is in front of the eyes of the wearer, thus covering the transparent section, and that the lower edge of the protective glass is provided with a protective plate extending substantially downwardly from the lower edge of the protective glass, the protective glass preventing the entrance of radiation to the viewing section when the workpiece is viewed through the protective glass.
• An advantage of the invention over the prior art is that the wearer of the protective device is able to view e.g. the welding workpiece even though the protective glass is in the position in front of the eyes of the wearer. For instance, when the welding is interrupted, the welder is thus able to position the welding rod accurately at the right position even though the protective glass is in front of his eyes, and the protection is nevertheless as efficient as previously.
• the protective device according to the invention it is not necessary to use hands in the above-mentioned situations.
• a further advantage of the invention is that it is simple, so that its introduction costs are low.
• Figure 1 shows a general side view of a protective device according to the invention
• Figure 2 shows a general side view of the protective device shown in Figure 1 when the protective glass has been turned up;
• Figure 3 is a perspective view of the situation of Figure 1;
• Figure 4 is a perspective view of the situation of Figure 2.
• the reference numeral 1 indicates a portion to be supported on the head of the wearer to protect the wearer from radiation and sparks formed e.g. during welding.
• the portion 1 is made of an opaque material, such as plastic.
• the reference numeral 2 indicates a transparent section 2 positioned in the area of the eyes of the wearer.
• the transparent section 2 comprises an opening made in the portion 1 and a plate portion 3 of a trans ⁇ parent material fitted in the opening.
• the reference numeral 4 indicates a turnable protective glass.
• the protective glass 4 is fastened to the portion 1 in such a way that it can be turned in front of the eyes of the wearer, whereby it covers the transparent section and enables the workpiece to be viewed during welding, for instance.
• FIGs 1 and 3 This position is shown in Figures 1 and 3.
• the protective glass 4 can also be turned into a position in which it does not cover the transparent section 2, whereby the wearer of the . protective device is able to see around him through the section 2.
• This position of the protective glass 4 is shown in Figures 2 and 4.
• the reference numeral 5 indicates means for supporting the protective device on the head of the wearer. Such means are fully obvious to one skilled in the art, so they will not be described in greater detail herein.
• a transparent viewing section 6 is formed below the transparent section 2, which viewing section 6 is at an angle with respect to the section 2 in such a way that the wearer is able to view the workpiece through the viewing section substantially downwards even when the protective glass 4 has been turned in front of the eyes of the wearer to cover the transparent section 2.
• the term "at an angle” means that the plane of the viewing section 6 is not substantially parallel with the plane of the transparent section 2.
• the plane of the viewing section 6 forms a noticeable angle with respect to the plane of the transparent section, as appears from Figures 1 and 2.
• the lower edge of the protective glass 4 is provided with a protective plate 7 extending substantially downwardly from the lower edge of the protective glass. The purpose of the protective plate 7 is to prevent radiation from entering the viewing section 6 when the workpiece is viewed through the protective glass 4 turned in front of the transparent section 2.
• the trans ⁇ parent viewing section 6 is formed by an opening formed in the portion 1 protecting the wearer from sparks and radiation and a plate 8 of a transparent material fitted in the opening.
• the material of the plate 8 is preferably the same as that of the plate portion 3. This material may be e.g. a suitable plastic material.
• the idea of the invention is that the wearer of the protective device does not need to turn the protective glass or the entire protective device when he, for instance, wants to interrupt the welding so as to view the workpiece and then restart the welding.
• the welder is able to view the workpiece through the viewing section by changing the viewing direction even though the protective glass is in the position required by welding. Harmful radiation formed in welding cannot, however, reach the viewing section 6 and thus the face of the wearer during welding, as • the protective plate 7 extending downwardly from the lower edge of the protective glass prevents the entrance of radiation to the viewing section.
• the workpiece is viewed through the protective glass 4 when the welding is in progress, whereby the protective plate 7 is positioned between the workpiece and the viewing section 6 and prevents the escape of radiation from the workpiece to the viewing section.
• the welder does not need to use the hands e.g. to turn the protective glass at different work stages and, however, the protection is as efficient as previous ⁇ ly. Safety at work is thus even increased since, as compared with the previously known devices, the protective glass, for instance, is more reliably in the right position before each work stage when wear- ing the protective device according to the invention, as the glass need not intermittently be turned away from the position protecting the eyes.
• the hands can be used solely for sup ⁇ porting and holding the welding means and possibly the object to be welded, because the protective glass, for instance, need not be moved by hands at the different work stages. This also increases the safety.
• the protective device according to the invention or its parts need not necessarily be exactly similarly to those shown in the drawings, but other solutions are possible as well.
• the shape of the protective device need not be accurately such as shown in the figures. The different details may also be shaped according to the requirements in each particular case.
• the viewing section need not necessarily form an extension of the transparent section, as in the example of the figures, but the viewing section can be formed of a separate opening and a transparent portion fitted in the opening. The transparent plates may even be omitted both from the viewing section and the transparent section, if this is considered to be necessary.

Landscapes

• Health & Medical Sciences (AREA)
• Veterinary Medicine (AREA)
• General Health & Medical Sciences (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Vascular Medicine (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Public Health (AREA)
• Ophthalmology & Optometry (AREA)
• Engineering & Computer Science (AREA)
• Respiratory Apparatuses And Protective Means (AREA)
• Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
• Outer Garments And Coats (AREA)
• Helmets And Other Head Coverings (AREA)
• Seal Device For Vehicle (AREA)
• Eyeglasses (AREA)
• Professional, Industrial, Or Sporting Protective Garments (AREA)
• Butt Welding And Welding Of Specific Article (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Emergency Protection Circuit Devices (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8531392

Family Applications (1)

Country Status (8)

Citations (7)

• 1990
  • 1990-11-09 FI FI905561A patent/FI90623C/sv not_active IP Right Cessation
• 1991
  • 1991-10-22 DE DE4192879T patent/DE4192879T1/de active Pending
  • 1991-10-22 NL NL9120024A patent/NL193979C/nl not_active IP Right Cessation
  • 1991-10-22 WO PCT/FI1991/000317 patent/WO1992008428A1/en active Application Filing
  • 1991-10-22 DE DE4192879A patent/DE4192879C2/de not_active Expired - Fee Related
  • 1991-10-22 AU AU87120/91A patent/AU8712091A/en not_active Abandoned
  • 1991-10-25 IT ITMI912838A patent/IT1251441B/it active IP Right Grant
• 1993
  • 1993-04-27 NO NO931518A patent/NO177885C/no unknown
  • 1993-05-07 SE SE9301577A patent/SE511763C2/sv not_active IP Right Cessation

Patent Citations (7)

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