Patent ID: 8875318

Claim:
A head band to assist a wearer in wearing a welding mask (welding shield), a face shield, or a safety helmet on the head, the head band comprising: a first band part configured to surround the circumference of the head; a pair of second band parts formed at front ends of the respective first sections, the second band parts being connected to each other in a length adjustable manner to surround a front region of the crown of the head: and a pair of third band parts formed at rear ends of the respective first sections, the third band parts being connected to each other in a length adjustable manner to surround a rear region of the crown of the head, wherein the first band part includes a pair of first sections to be located at opposite lateral regions of the head, each first section being provided with a coupling piece for coupling with the welding mask, a second section to be located on a front region of the head, the second section taking the form of an arc-shaped section having a predetermined radius of curvature when completely unrolled and being adapted to come into close contact at a predetermined gradient with the forehead, and a pair of third sections to be located at a rear region of the head, the third sections being connectable to each other so as to enable adjustment in the length of the third sections, wherein a radius of curvature of an imaginary center line of the second section extending between horizontal center axes of both the first sections is in a range of 190 mm to 215 mm, wherein a length of an upper end of the second section is less than a length of a lower end of the second section to allow the second section to come into close contact with the forehead, wherein a central region between the upper and lower ends of the second section is inwardly convexly raised in order to prevent the upper and lower ends of the second section from leaving a mark on the forehead, wherein the third sections are fitted respectively to left and right ends of a length adjusting lever to enable adjustment in the length of the third sections connected to each other, and a cushion member, which is centrally concave from upper and lower sides and from left and right sides thereof, is coupled to the inner surface of the length adjusting lever so as to come into close contact with the back of the head, wherein each second band part integrally extends from the corresponding first section to have a fixed angle between 55 degrees to 85 degrees with respect to the horizontal axis of the first section, and each third band part is hinged to the corresponding first section so as to be rotated by an angle of 55 degrees to 85 degrees with respect to the horizontal axis of the first section such that only one pair of the pair of second band parts and the pair of third band parts is rotated with respect to the horizontal axis of the first section.