Vertical vibrator

Details Vertical vibrator Vertical vibrator

2006-05-02

2006-05-02

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

C310S017000, C340S407100, C381S417000

Reexamination Certificate

active

07038335

ABSTRACT:
A vertical vibrator is disclosed. The vibrator comprises a casing, a magnetic field part including a yoke and a magnet fixed to an inner surface of the yoke, a spring member fixed at one end to the casing and at the other end to the magnetic field part, a vibration part having a weight integrally mounted to the magnetic field part and vibrating together with the magnetic field part through the spring member, a vibration coil located below the magnetic field part for generating an electric field, and a magnetic fluid applied to an upper surface of the spring member corresponding to the magnet and fixed in position by a magnetic flux. The vibrator absorbs contact noise and impact caused by contact between the vibration part and the other members while ensuring convenient and appropriate positioning of the magnetic fluid, thereby having an extended life span.

REFERENCES:
patent: 4931765 (1990-06-01), Rollins et al.
patent: 5184037 (1993-02-01), Kobayashi et al.
patent: 5903076 (1999-05-01), Suyama
patent: 6492899 (2002-12-01), Yamaguchi
patent: 6608541 (2003-08-01), Shiraki et al.
patent: 6777895 (2004-08-01), Shimoda et al.
patent: 6806603 (2004-10-01), Choi et al.

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