Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2000-03-22
2002-05-28
Michl, Paul R. (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
active
06395814
ABSTRACT:
BACKGROUND OF THE INVENTION
Heretofore, a blade of a wiper for removing waterdrop of a window of a motor car and the like has been manufactured by molding a mixture consisting of rubber and the like as a principal ingredient and a cross linking agent and other additives. Normally, in the additives mentioned above, tourmaline was not contained. Of course inventor of the present invention of the application became aware of the application of the tourmaline, and filed a patent application (Japanese Patent Application No. Hei 2-325294). In case the tourmaline is not used, oil film is formed on the window, and particularly in the night time, light reflects with the film which brings out a danger due to the deteriorated field of vision. Under the circumstance, a variety of medical fluids have been used for removal of the oil film. However, those medical fluids must be used whenever the window wiper is used which is not only a cumbersome greatly to the driver but also produces environment problems owing to the fact that the fluids are chemical fluids. Even though a quantity of the fluid to be used by one driver at a time is small, such problems cannot be avoided if a majority of cars use. When the tourmaline is used, the inventor of the present invention of the application was not aware of the piezoelectricity and was aware of only the permanent electrode of the tourmaline so that the effect was not fully analyzed by the inventor.
SUMMARY OF THE INVENTION
The wiper blade utilizing piezoelectricity of tourmaline and a method of manufacturing the wiper blade according to the present invention was conceived by the inventor in order to solve the problems. A masticated material for primary material of wiper blade such as rubber (polymer) is blended with the tourmaline and a cross linking agent to be kneaded to produce the wiper blade.
REFERENCES:
patent: 5153657 (1992-10-01), Yu
Kubo Tetujiro
Watanabe Takao
Maruenu Kabushikikaisha
Michl Paul R.
Wenderoth , Lind & Ponack, L.L.P.
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