US2010146728A1PendingUtilityA1
Windshield wiper having reduced friction characteristics
Individually held — no corporate assignee on recordPriority: Dec 6, 2001Filed: Feb 23, 2010Published: Jun 17, 2010
Est. expiryDec 6, 2021(expired)· nominal 20-yr term from priority
C08G 77/16B60S 2001/3836B60S 1/38Y10T428/31663C08L 27/18C08G 77/20B60S 2001/3829Y10T428/2995C08K 3/38C08L 83/04C08K 3/04C08K 2003/385
54
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Claims
Abstract
A wiper blade made of a compound having a methyl vinyl silicone polymer, a filler, and a friction-reducing additive is provided. The friction-reducing additive is present in an amount from between about 5 and 42 weight percent. The average particle size of the friction-reducing additive is preferably less than about 25 microns, thereby permitting extrusion of the compound into the shape of a wiper blade. Polytetrafluoroethylene is preferred as a friction-reducing additive, but other substances, such as boron nitride or graphite could be used.
Claims
exact text as granted — not AI-modified1 . A windshield wiper comprising: a frame adapted to be attached to a vehicle; a wiper blade attached to the frame; and wherein the wiper blade is made from a mixture including a methyl vinyl silicone polymer from about 22 to 55 weight percent, a filler from about 35 to 50 weight percent, and polytetrafluoroethylene in an amount of from about 5 to 42 weight percent, the polytetrafluoroethylene having an average particle size of less than about 25 μm.
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