Welding helmet air flow barrier
AssigneeIllinois Tool Works Inc.
InventorsWilliam Joshua Becker, Eric Sommers
Life of this patent
Estimating the term…
Abstract
An air barrier that prevents entrainment of surrounding air from the welding environment into the welding helmet is provided. The barrier for the welding helmet contains a flexible curtain, front and rear edges, and means for securing the front edge of the curtain adjacent to the rear edge of the helmet. The flexible curtain may be made of fire-resistant and flexible molded material. The air barrier may be permanently secured to or removable from the welding helmet. The invention may be used in conjunction with a variety of ventilation and cooling systems, including small units that mount on or in welding helmets, as well as more elaborate blowing systems partially carried by the welder.
Claims20
An air barrier for a welding helmet comprising:
- a curtain configured to be secured to a rear edge of a welding helmet and to extend over an upper part of the head of a welder rear of the helmet when the helmet is in an operative position for welding;
- and
- an edge formed on or in the curtain and configured to extend to rear head gear that serves to hold the helmet on the head of the welder or to a location on the head of the welder between the head gear and the rear edge of the welding helmet.
An air barrier for a welding helmet comprising:
- a flexible curtain made of a fire-resistant fabric and configured to be secured to a rear edge of a welding helmet and to extend to a location on an upper part of the head of a welder when the helmet is in an operative position for welding;
- an front edge formed on or in the curtain and configured to urge the curtain towards the rear edge of the helmet;
- and
- an elastic rear edge formed on or in the curtain and configured to urge the flexible curtain towards the upper part of the head of the welder.
A method for making an air barrier for a welding helmet comprising:
- on or in a front edge of a flexible curtain, disposing means for securing the flexible curtain to the welding helmet;
- and
- on or in a rear edge of the flexible curtain, disposing means for elastically urging the flexible curtain towards the upper part of the head of the welder.
Dependencies are inferred from the claim text.