Abstract: A device for the angular orientation of a boot to be associated with a gliding or rolling board. The device includes a disk and a plate, the disk having a peripheral toothing. The plate is rotationally guided in relation to the disk. The plate is provided with an arm that has a toothed end. The arm is journalled with respect to tie plate along an axis that is parallel to the thickness of the plate, and an elastic mechanism biases the arm such that the toothed end of the arm is engaged with the peripheral toothing of the disk.

Abstract: An iron-type golf club head comprising a hollow metal body (1) incorporating an internal cavity (2) delimited by a series of walls (10, 11, 12, 13) including an impact wall (10) connected peripherally at all points to other walls (11, 12, 13). The inner surface (100) of the impact wall (10) is coated with a thin layer (4) of a viscoelastic resin which has damping properties, and which fills only a portion of the internal cavity (2). The resin layer assures reduced interference vibrations peculiar to "hollow" irons, i.e., those incorporating an internal cavity for improved weight distribution.