Internal-combustion engines – Vibration compensating device – Balancing arrangement
Reexamination Certificate
2007-08-10
2008-10-14
Kamen, Noah (Department: 3747)
Internal-combustion engines
Vibration compensating device
Balancing arrangement
C074S603000
Reexamination Certificate
active
07434560
ABSTRACT:
With a view to reducing the load imposed by a cantilevered balancer weight on a balancer shaft bearing while balancing the inertia force generated by the balancer weights with the center of gravity of a piston and connecting road system, a balancing device for an engine is provided, the device having a second balancer weight which is cantilevered at a position opposing a first balancer weight, wherein the balancer shaft bearing between the first and the second balancer weights is displaced toward the second balancer weight according to the axial direction of the balancer shaft for a certain distance from an intersection Y of the axis of the balancer shaft with a plane passing through the center of gravity Gp of the piston-connecting rod system so that the distance L2between the intersection Y and the center of gravity G2of the second balancer weight is longer than the distance L1between the intersection Y and the center of gravity G1of the first balancer weight and so that the moment created at the intersection Y by the inertia force F1of the first balancer weight and the moment created at the intersection Y by the inertia force F2of the second balancer weight are balanced.
REFERENCES:
patent: 6880512 (2005-04-01), Hashimoto et al.
patent: 57-044863 (1982-03-01), None
patent: 05-172187 (1993-07-01), None
Hirsch Simpson LLC
Kamen Noah
Suzuki Motor Corporation
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