Vibration generator

Details Vibration generator Vibration generator

2011-06-14

2011-06-14

Tamai, Karl I (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Reciprocating

C310S021000, C310S036000

Reexamination Certificate

active

07960875

ABSTRACT:
There is provided a small-sized vibration generator that resonates at two different frequencies. A movable base is housed inside a case. The movable base has an installation plate, and supporting plates bent at right angles from both ends of the installation plate. A first elastically deformable portion is formed integrally with the installation plate, and a weight body is supported by the first elastically deformable portion. In the movable base, a second elastically deformable portion is provided between the installation plate and the supporting plates, and the supporting plates are fixed to supporting end plates of the case. The bending elastic modulus of the second elastically deformable portion is higher than the bending elastic modulus of the first elastically deformable portion, and resonates at two natural frequencies when a driving force is applied to the weight body by a magnetically-driven portion.

REFERENCES:
patent: 5546069 (1996-08-01), Holden et al.
patent: 5650763 (1997-07-01), McKee et al.
patent: 7652399 (2010-01-01), Lee
patent: 7755227 (2010-07-01), Hirashima
patent: 2008/0089168 (2008-04-01), Higuchi
patent: 2005-095740 (2005-04-01), None
patent: 2006-128401 (2006-05-01), None

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