Endless belt power transmission systems or components – Positive drive pulley or guide roll
Reexamination Certificate
2005-10-11
2008-10-28
Siconolfi, Robert A. (Department: 3683)
Endless belt power transmission systems or components
Positive drive pulley or guide roll
C474S154000, C474S155000, C474S156000, C474S160000, C474S202000, C474S203000, C474S206000, C474S209000
Reexamination Certificate
active
07442139
ABSTRACT:
In a slat conveyor, slats for supporting conveyed articles and personnel extend between two side-by-side, spaced, endless roller chains engaged with driving sprockets at one end of the conveying path and driven sprockets at the other end. At a location radially outward from the pitch circle, the distance between the front surface of the sprocket teeth to the tooth center line is at least as great as the distance from the centerline to the front surface at the pitch circle. The tooth faces merge smoothly with the tooth gap bottom, and the root diameter is smaller than the root diameter according to ISO standards.
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U.S. Appl. No. 11/269,002, Aizoh Kubo et al.
U.S. Appl. No. 11/264,317, Masatoshi Sonoda.
International Standard, Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts, International Organization For Standardization, ISO 286-2; First Edition Jun. 1, 1988.
Ishida Hiroki
Kubo Aizoh
Sonoda Masatoshi
Howson & Howson LLP
Rashid Mahbubur
Siconolfi Robert A.
Tsubakimoto Chain Co.
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