Endless belt power transmission systems or components – Means for adjusting belt tension or for shifting belt,... – Tension adjuster has surface in sliding contact with belt
Reexamination Certificate
2005-06-07
2005-06-07
Hannon, Thomas R. (Department: 3682)
Endless belt power transmission systems or components
Means for adjusting belt tension or for shifting belt,...
Tension adjuster has surface in sliding contact with belt
C474S101000, C474S140000
Reexamination Certificate
active
06902505
ABSTRACT:
A blade-type tensioner for applying tension to a chain comprising a base, an arcuately shaped blade shoe having a chain sliding face, a spring provided on a back side of the blade shoe, and a guide member. The blade shoe has a proximal end portion and a distal end portion, where the proximal end portion is swingably supported on the base, and the distal end portion is slidably supported on a slide plate of the base. The slide plate is arcuately shaped to form a concavely arcuate arc face on an opposite side of the distal end portion of the blade shoe, and the distal end portion of the blade shoe has a convexly arcuate arc face corresponding to the concavely arcuate arc face of the slide plate. The distal end portion of the blade shoe is guided by a self-aligning action of the concavely arcuate arc face of the slide plate in such a way that the distal end portion is centrally positioned in a lateral direction on the slide plate. The guide member comprises a pair of guide portions formed integrally on opposite side edges of the distal end portion of the blade shoe, and hang below opposite side ends of the slide plate.
REFERENCES:
patent: 3276282 (1966-10-01), Duncan
patent: 6036613 (2000-03-01), Diehm
patent: 6364796 (2002-04-01), Nakamura et al.
patent: 2004/0005953 (2004-01-01), Yonezawa et al.
patent: 000581219 (1994-02-01), None
patent: 2000-234656 (2000-08-01), None
Sakamoto Naoji
Yonezawa Shinichi
BorgWarner Morse TEC Japan K.K.
Brown & Michaels PC
Dziegielewski Greg
Hannon Thomas R.
Johnson Vicky A.
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