The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 1998
Filed:
Jun. 06, 1995
Masuo Kokumai, Settsu, JP;
Yukinaru Nakamura, Settsu, JP;
Mitsuru Kishine, Settsu, JP;
Tetsuo Kitahaba, Settsu, JP;
Hirokazu Yukawa, Settsu, JP;
Kazuhide Sawada, Settsu, JP;
Sang Bong Han, Seoul, KR;
Tetsuo Shimizu, Settsu, JP;
Takahisa Aoyama, Settsu, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
Polytetrafluoroethylene molding powder which comprises 0.01 to 1% by weight of a perfluoro(vinyl ether) unit and which has a heat of crystallization of 18.0 to 25.0 J/g. The molding powder provides a molded article which has a flex life of not less than 7 million cycles, a creep resistance (total deformation at 200.degree. C.) of not more than 20%, and a creep resistance (total deformation at 25.degree. C.) of not more than 15%. The polytetrafluoroethylene molding powder which is excellent in both creep resistance and flex fatigue resistance is provided as a molding material for parts which are repeatedly bent such as pump.