Windshield wiper assembly having a winter boot

B - Operations – Transporting – 60 – S

Patent

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Details

B60S 1/04 (2006.01) B60S 1/32 (2006.01) B60S 1/38 (2006.01)

Patent

CA 2487799

A wiper assembly (11) having a wiper frame (13) and a wiper boot (17). The wiper boot includes an upper wall (31) integrally connected between two side walls (33). A lower leg (35) is integrally connected to each side wall at an end opposite that of the upper wall. Each lower leg (35) runs transversely and inwardly from the side walls (33), the lower legs (35) integrally connecting to a u-shaped wall (36). The upper wall, the side walls, the lower legs, and the u-shaped wall define a cavity (37) that receives the wiper frame. The wiper boot is made from silicone elastomer that preferably includes approximately 30 to 60 weight percent of polyvinylmethylsiloxane, approximately 15 to 40 weight percent of iller, approximately 0.1 to 10 weight percent of pigment, and approximately 0.1 to 10 weight percent of catalyst.

La présente invention a trait à un ensemble d'essuie-glace (11) comportant un corps d'essuie-glace (13) et une gaine d'essuie-glace (17). La gaine d'essuie-glace comprend une paroi supérieure (31) reliée solidairement entre deux parois latérales (33). Une patte inférieure (35) est reliée solidairement à chaque paroi latérale au niveau d'une extrémité opposée à celle de la paroi supérieure. Chaque patte inférieure (35) s'étend transversalement et intérieurement depuis les parois latérales (33), les pattes inférieures (35) solidairement reliées à une paroi en U (36). La paroi supérieure, les parois latérales, les pattes inférieures, et la paroi en U définissent une cavité (37) qui reçoit le corps d'essuie-glace. La gaine d'essuie-glace est réalisée en élastomère à silicone qui de préférence comprend environ 30 à 60 % en poids de polyvinylméthylsiloxane, environ 15 à 40 % en poids de charge, environ 0,1 à 10 % en poids de pigment, et environ 0,1 à 10 % en poids de catalyseur

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