Helmet for divers

Abstract

A head enclosing helmet structure is provided including a fluidtight front viewing window and a lower access opening for upwardly removably receiving the head of the wearer of the helmet therethrough. The outer surface portions of the helmet portions disposed about the lower access opening are generally cylindrical and an annular collar of deformably and compressible material is wedgingly removably receivable between the inner surfaces of the access opening of the helmet and the opposing neck surfaces of the wearer. A hollow tubular and endwise tapering flexible neck dam provided with a supportive radially contractable mounting ring on its major diameter end is removably clampingly engageable about the cylindrical outer surface portions of the helmet extending about the access opening therein and a generally horseshoe-shaped yoke is provided for removable disposition about the neck of the wearer of the helmet and provided with releasable anchor means for securement to the mounting ring with the portion of the neck dam disposed between its opposite ends compressively clamped between the upper surface portions of the yoke and the undersurface portions of the collar, the latter being upwardly seatingly engageable within the access opening of the helmet against the lower portions of a resilient head cushioning liner within the helmet.