Vibration attenuating member and method of making same

F - Mech Eng,Light,Heat,Weapons – 16 – F

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Details

F16F 9/30 (2006.01) A41D 19/015 (2006.01) A41D 31/00 (2006.01) B32B 27/08 (2006.01)

Patent

CA 2215515

A vibration attenuating member (27) includes at least a first layer (31) composed of a viscoelastic material having a Shore 00 durometer of less than 50 and a rebound percentage of less than 20. Preferably the vibration dampener also includes second and third layers, coterminous with the first layer (33, 35), which are composed of a foam material. The viscoelastic layer (31) may have a non-uniform shape, such as precurved (Fig. 1), tapered (Fig. 5), or the like. The viscoelastic material may be creased (51, 53) to facilitate bending. The member (27) has a transmissibility no greater than 1.0 in the range of from 31.5 to 200 Hz, and a transmissibility of no more than 0.6 in the range of from 200 Hz to 1250 Hz (Fig. 8). The vibration attenuating member (27) may form a glove, a glove liner, a portion of a glove liner, a portion of a glove, a sports glove, a wrap for a tool, or be used in some other application where vibration attenuation is desirable.

Elément (27) atténuant les vibrations qui comporte au moins une première couche (31) composée d'un matériau visco-élastique présentant un indice de dureté Shore 00 inférieur à 50 et un pourcentage de rebondissement inférieur à 20. De préférence, l'amortisseur de vibrations comporte également des deuxième et troisième couches, exactement superposées à la première couche (33, 35), qui sont constituées de mousse. La couche visco-élastique (31) peut avoir une forme non uniforme, telle que préincurvée (fig. 1), conique (fig. 5) ou autre. Le matériau visco-élastique peut être plissé (51, 53), ce qui facilite l'incurvation. Ledit élément (27) présente une transmissibilité ne dépassant pas 1,0 dans la plage allant de 31,5 à 200 Hz, et une transmissibilité ne dépassant pas 0,6 dans la plage allant de 200 Hz à 1250 Hz (fig. 8). L'élément (27) atténuant les vibrations peut constituer un gant, une doublure de gant, une partie d'une doublure de gant, un gant de sport, une enveloppe d'outil, ou peut être utilisé dans d'autres applications pour lesquelles il est souhaitable d'obtenir une atténuation des vibrations.

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