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US 6,648,784 B2Granted
Idler sprocket
AssigneeThe Gates Corporation
InventorJohn D. Redmond
Life of this patent
Estimating the term…
Abstract
A belt drive system and toothed idler sprocket having an arcuate pitch to significantly reduce noise. The toothed idler sprocket having a pitch sufficient to cause proper engagement between a belt and the sprocket at a minimal belt wrap angle.
Claims9
A belt drive system comprising;
- a toothed belt having a pitch, the belt trained between at least two sprockets;
- a third idler sprocket disposed between the two sprockets having a pitch, the third idler sprocket engaged with a belt toothed surface;
- the belt having an angle of wrap between 5° and 0° about the third idler sprocket;
- and
- the third idler sprocket pitch determined by the angle of wrap.
2 more elements
A sprocket having a plurality of teeth on a cylindrical surface, the teeth having a pitch, the improvement comprising:
- the pitch determined to substantially engage a belt in rack form;
- and
- a belt tooth pitch greater than a sprocket tooth pitch.
A sprocket having a plurality of teeth on a cylindrical surface, the teeth having a pitch, the improvement comprising:
- the pitch greater than a belt rack form pitch to minimize a belt noise.
An idler sprocket for engaging. a toothed belt comprising:
- a plurality of teeth having a pitch;
- the pitch is substantially equal to or less than a belt pitch for engaging a belt in a rack form and having a belt wrap angle in the range of 0° to 5°;
- the pitch is calculated by the equation π(Ad)/(sprocket number of teeth);
- and
- wherein Ad is calculated by the equation Sd−(PLDd×BWd).
2 more elements
Dependencies are inferred from the claim text.