Endless belt power transmission systems or components – Positive drive pulley or guide roll – Having nonmetallic component
Reexamination Certificate
2005-08-16
2005-08-16
Bucci, David A. (Department: 3682)
Endless belt power transmission systems or components
Positive drive pulley or guide roll
Having nonmetallic component
C474S152000
Reexamination Certificate
active
06929575
ABSTRACT:
A pulley comprises a disk and an insert. The insert is fitted into the center of the disk integrally. Linear expansion coefficient of the disk is larger than the same of the insert. A concavity is formed on a periphery surface of the insert so that both side surfaces of the concavity are slanted outwardly, i.e. a distance between the side surfaces become large in proportion to being far from the centerline of the insert. When a slanting angle is defined as an angle between the side surface and a line which is perpendicular to the centerline of the insert on a plane including the centerline of the insert, the slanting angle is set from ten degrees to forty-five degrees, preferably from fifteen degrees to forty-five degrees. The disk is made of synthetic resin such as phenol resin, and the insert is made of metal such as iron.
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Patent Abstracts of Japan, JP 2001-317616, Nov. 16, 2001.
Kosaka Atsushi
Takahashi Hiroyuki
Bucci David A.
Johnson Vicky A.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Toyoda Koki Kabushiki Kaisha
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