Toothed belt transmission for driving dynamic balancing shafts i

Details Toothed belt transmission for driving dynamic balancing shafts i Toothed belt transmission for driving dynamic balancing shafts i

1994-11-17

1996-07-16

Buiz, Michael Powell

Endless belt power transmission systems or components

Positive drive belt

Drive surfaces on belt formed in or interconnected by...

474238, F16G 128

Patent

active

055362133

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 reinforcing structure (7) formed by glass fibre cords (8) having a diameter equal to 0.9 mm.

REFERENCES:
patent: 4074589 (1978-02-01), Nakamura et al.
patent: 4125036 (1978-11-01), Nakamura et al.
patent: 4614509 (1986-09-01), Tangorra et al.
patent: 5273496 (1993-12-01), White, Jr.
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".

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