Spring devices – Resilient shock or vibration absorber – Nonmetallic – resilient element
Patent
1990-07-13
1992-08-04
Graham, Matthew C.
Spring devices
Resilient shock or vibration absorber
Nonmetallic, resilient element
188379, 2671405, 464179, F16F 1512
Patent
active
051352044
ABSTRACT:
A dynamic damper to be mounted on a rotary shaft, such as the drive shaft or a propeller shaft of an automobile, to damp detrimental vibrations generated as the rotary shaft rotates. The dynamic damper is of a sectional type comprising a first end unit, a second end unit and a mass member. The first and second end units are mounted on the rotary shaft opposite to each other, and the mass member is joined fixedly at its opposite ends to the first and second end units. Each of the first and second end units comprises an elastic member integrally having a holding portion which holds to the rotary shaft and a flange portion radially extending from the holding portion, and a holding member fixedly joined to the outer circumference of the flange portion of the elastic member. The first and second end units, and the mass member selected from among those having different dimensions and characteristics are assembled to provide a dynamic damper having a characteristic frequency appropriate for damping the specific detrimental vibrations of the rotary shaft.
REFERENCES:
patent: 2719017 (1955-09-01), Mordarski et al.
patent: 3128978 (1964-04-01), Sykes
patent: 3819168 (1974-06-01), Nittinger et al.
patent: 4734079 (1988-03-01), Viets
patent: 4811933 (1989-03-01), Inagaki et al.
Graham Matthew C.
Tokai Rubber Industries Ltd.
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