Apparel – Guard or protector – For wearer's head
Patent
1988-05-13
1989-12-26
Nerbun, Peter
Apparel
Guard or protector
For wearer's head
2 9, 2205, A61F 906
Patent
active
048888257
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a protecting device, especially a welding shield, consisting of a portion protecting from radiation and sparks, which portion is arranged to rest on the head and at the eyes provided with a protecting glass turnable upwards.
Such protecting devices are widely known, especially at welding. The most common construction consists of a helmet of a not-transparent material, e.g. wood, metal etc., which helmet is arranged to rest on the head so that it protects the face of the welder. Moreover, the helmet is often provided with hinges at its upper edge so that it can be lifted up when no shield is needed. The helmet is additionally provided with an opening at the eyes, in which opening is arranged a protecting glass which can be opened. In practice the welding point in question can be observed during welding through said protecting glass.
A corresponding construction has been used also as embodiments intended to be supported by hand during the whole welding procedure.
The simplest version of the known devices is a plain planar sheet provided with a grip, by means of which the welder can hold the sheet between the welding point and his eyes. This device is in the first place intended to be used by amateurs.
The common disadvantage of all the known protecting devices is that the field of vision of the welder is extremely limited, when the shield is in its place. Additionally, for turning the protecting glass or turning down the whole protecting device, a hand or some kind of a quick motion with the head is needed. Because of the limited field of vision, the welder cannot always see his surroundings, whereby risk situations rather easily appear. Turning the protecting glass takes time again and the whole step is difficult e.g. when the welder is wearing gloves. By turning the protecting glass, it is, however, only possible to provide an extremely restricted field of vision, whereby it is customary to lift off the whole protecting helmet from the face. The protecting helmet cannot, however, always be properly placed in the upper position because of lack of space, this disadvantage has been noticed especially at repair works. When turning down the protecting helmet or the protecting glass, the motions needed easily lead to that the welding rod is moving from the right point as a consequence of the motions mentioned. A disadvantage of all known protecting devices is also that they are suitable to be used as protecting devices at welding only and correspondingly, protecting devices intended to be used at other kinds of work are not suitable to be used at welding.
The intention of the invention is to produce a protecting device not having the disadvantages of the known protecting devices and still being advantageous to manufacture and comfortable to use.
This has been achieved by means of the protecting device of this invention, characterized in that the portion protecting from radiation and sparks is manufactured of a material at least limiting the passage of injurious radiation, but being transparent in the direction of the user's eyes, to form a continuous portion without an opening, and that a visor is turnably journalled to the protecting portion, at least a part of which visor is arranged to form a protecting glass.
The advantage of a device according to the invention is that this protecting device suits well to various works, because the field of vision is wide and the head always protected from each side. During welding, the welding rod can easily be directed to the right point before ignition and also be held there, because the rod can, if needed, be supported by both hands and because no sudden motions of a hand or the head are needed to turn the protecting device or a part thereof into a protecting position. The protecting device of the invention eliminates well also the disadvantages of the radiation coming into the eyes from the side without anyway substantially limiting the field of vision. The protecting device of the invention also protects well from heat. Moreover, the device of
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Hakala Timo
Lehtonen Reijo
Euromaski Oy
Nerbun Peter
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