Patent ID: 7181776

Claim:
A rotatable receiver for use with a helmet and for receiving a bayonet of a mask, the rotatable receiver comprising: a receiver; a position device having a base with at least two indentations and an extension extends from the base; a housing mounted to the helmet and having an aperture that receives the extension to allow the extension to connect to the receiver, the aperture has at least a first, second and third levels wherein the first level has an opening that is greater than the lateral extension of the extension, the second level has an opening greater than the lateral extension of the base so the base can rotate within the second level; and the third level has an opening greater than the lateral extension of the base and at least one projection, wherein the projection extends into at least one indentation when the receiver is removably secured in a desired position; and when the receiver is to be rotated, the base is positioned in the second level and the receiver is rotated relative to the helmet such that the bayonet can be introduced into the receiver to join the mask and the helmet.