Endless belt power transmission systems or components – Positive drive belt – Drive surfaces on belt formed in or interconnected by...
Patent
1996-05-20
1997-04-29
Schoeppel, Roger J.
Endless belt power transmission systems or components
Positive drive belt
Drive surfaces on belt formed in or interconnected by...
F16G 128
Patent
active
056243375
ABSTRACT:
In an endothermic engine there are two dynamic balancing shafts driven in rotation in respectively opposite directions, at a speed twice that of the rate of rotation of the crankshaft. The dynamic balancing shafts are driven by a toothed belt transmission (1), comprising a driving pulley (2) keyed on the crankshaft, two driven pulleys (3, 4) keyed on the balancing shafts and a tensioning pulley (5) rotatably engaged with the base. The pulleys (2, 3, 4, 5) are connected together by a belt (6) having an internal (9) and external (10) toothing with a toothing pitch (P) equal to 7.5 mm, and provided with a resistant insert (7) formed by glass fibre cords (8) having a diameter equal to 0.9 mm.
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Noise Control Engineering Journal, vol. 39, No. 2, Sep. 1992, U.S.A., pp. 77-89, Chee-chiu Joseph Wong, "Timing Belt Noise of Office Machines II".
Hydraulic Penumatic Mechanical Power, vol. 31, No. 367, Jul. 1985, Morden, Surrey, Great Britain, pp. 175-177, G. Heinz, "Timing belts--an allround transmission element".
Cipollone Franco
Di Giacomo Tommaso
Fiordaliso Carlo
Macchiarulo Vincenzo
Dayco PTI S.p.A.
Schoeppel Roger J.
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