Abstract: A steering head for a bicycle comprises a mounting shaft having a lower end secured to the forward end of the main bicycle frame, the mounting shaft projecting upwardly from the forward frame end. A bearing sleeve is rigid with the fork head of the front wheel fork of the bicycle and is rotatably mounted on the mounting shaft.

Abstract: Eyeglasses of the type which permit interchanging of lenses are disclosed which employ a support frame having a plurality of support prongs thereon adapted to receive a pair of lenses in supporting relation on the frame, and including a retaining clip pivotally mounted on the frame and movable between a first position which permits easy mounting of lenses on and removal from the support frame, and a second position wherein the retaining clip retains the lenses in mounted relation on the support frame so as to prevent their removal.

Abstract: A sport goggle is disclosed which includes a rectangular flexible frame normally disposed in planar relation and bendable to conform to a wearer's head on which the goggle may be secured by flexible straps secured to opposite ends of the frame. The frame supports a removable rectangular lens and has a face engaging cushion spaced from the lens by support pads which define air vents therebetween over which flexible air filters are mounted. The straps are adapted to be folded about and secured to the frame so as to protect the lens during non-use.

Abstract: The invention relates to a protective helmet having a helmet shell resistant to mechanical stress. The helmet shell is composed at least partially of meltable material and is provided along at least one of its separating lines with an elongate separating device in the form of an electrical resistor element, said separating device being provided with at least two terminals to which an electric current source is connectable.