B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
B07B1/40—Resonant vibration screens
B—PERFORMING OPERATIONS; TRANSPORTING
B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
Résonateur mécanique comprenant quatre masses imbriquées possédant chacune un axe de symétrie ternaire orienté suivant un axe de symétrie ternaire d'un cube et procédé de calcul de vitesse de rotation associé
Hélice, en particulier hélice aérienne, pourvue d'un dispositif pour amortir les vibrations de l'hélice dans la direction de l'axe de rotation de cette dernière.