Engine balancer

Details Engine balancer Engine balancer

2007-07-02

2009-12-29

Kamen, Noah (Department: 3741)

Internal-combustion engines

Vibration compensating device

Balancing arrangement

C074S603000

Reexamination Certificate

active

07637240

ABSTRACT:
An engine balancer including a rotatable drive balance shaft having a first balance weight and a first portion formed at a position offset from the first balance weight in an axial direction of the drive balance shaft, a drive gear disposed on the drive balance shaft, a driven gear meshed with the drive gear, a driven balance shaft parallel to the drive balance shaft and rotatable with the driven gear, the driven balance shaft including a second balance weight and a second portion formed at a position offset from the second balance weight in an axial direction of the driven balance shaft. The second portion of the driven balance shaft is constructed to produce a moment of inertia less than a moment of inertia that is produced in the first portion of the drive balance shaft.

REFERENCES:
patent: 2005/0061284 (2005-03-01), Sato et al.
patent: 2000-65150 (2000-03-01), None

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