Endless belt power transmission systems or components – Means for adjusting belt tension or for shifting belt,... – Guide roll mounted for movement of its axis along...
Patent
1989-08-21
1990-12-11
Bui, Thuy M.
Endless belt power transmission systems or components
Means for adjusting belt tension or for shifting belt,...
Guide roll mounted for movement of its axis along...
F16H 712
Patent
active
049766619
ABSTRACT:
An advancement and the advancing state of a tension rod which maintains a belt or a chain in a tension state is maintained by a coil spring. The coil spring deflects against an excess of opposite force from the belt or the chain to go back the tension rod and prevents the excess tension of the belt or the chain.
The coil spring having a non-linear characteristic attached within the casing so as to be a range of the use including a changing point of a load deflection characteristic changes the number of active turns of the coil spring at the time of the resonance of the belt or the chain with changing point as the boarder.
The above resonance decreases according to the change of the natural frequency of the vibration of the coil spring.
The advancement of the tension rod can also be performed by the coil spring formed by the stranded wires.
REFERENCES:
patent: 4533341 (1985-08-01), Yokota
patent: 4790801 (1988-12-01), Schmidt et al.
patent: 4826470 (1989-05-01), Breon et al.
patent: 4863417 (1989-09-01), Kimata et al.
Bui Thuy M.
NHK Spring Co. Ltd.
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